Page 1 Mini UM S/M ideas for life URBAN MULTI SERVICE MANUAL R-410A Heat Pump 50Hz...
Page 2: Table Of Contents
Mini UM S/M R410A Heat Pump 50Hz 1. Introduction .....................v 2. Safety Cautions..................v Part 1 General Information ............1 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ..................... 3 3. Capacity Range..................4 Part 2 Specifications..............5 1. Specifications ..................6 1.1 Outdoor Units ..................
Page 3 Mini UM S/M 4.3 Discharge Pipe Protection Control ............47 4.4 Inverter Protection Control..............48 5. Other Control..................49 5.1 Demand Operation ................49 5.2 Heating Operation Prohibition ............... 49 6. Outline of Control (Indoor Unit) .............50 6.1 Drain Pump Control ................50 6.2 Louver Control for Preventing Ceiling Dirt ..........
Page 4 Mini UM S/M 4.16 “E4” Outdoor Unit: Actuation of Low Pressure Switch ......122 4.17 “E5” Compressor Motor Lock..............123 4.18 “E7” Malfunction of Outdoor Unit Fan Motor ......... 124 4.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve ..............126 4.20 “F3”...
Page 5 Mini UM S/M 6. Troubleshooting by Indication on the Unified ON/OFF Controller..166 6.1 Operation Lamp Blinks ................ 166 6.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) ................. 168 6.3 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink)................ 171 7.
Page 6: Introduction
Mini UM S/M Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
Page 7 Introduction Mini UM S/M Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock.
Page 8 Mini UM S/M Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals.
Page 9 Introduction Mini UM S/M Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock.
Page 10: Part 1 General Information
Mini UM S/M Part 1 General Information 1. Model Names of Indoor/Outdoor Units............2 2. External Appearance................3 2.1 Indoor Units ..................... 3 3. Capacity Range..................4 General Information...
Page 11: Model Names Of Indoor/Outdoor Units
Model Names of Indoor/Outdoor Units Mini UM S/M 1. Model Names of Indoor/Outdoor Units Indoor Units Power Type Model Name Supply Ceiling mounted — cassette type (Double flow) Ceiling mounted cassette type — — — — (Multi flow) 600×600 Ceiling mounted —...
Page 12: External Appearance
Mini UM S/M External Appearance 2. External Appearance Indoor Units Ceiling mounted cassette type (Double flow) Ceiling mounted duct type S-20LM3 S-40EM3 S-25LM3 S-50EM3 S-32LM3 S-63EM3 S-40LM3 S-80EM3 S-50LM3 S-100EM3 S-63LM3 S-125EM3 S-80LM3 S-125LM3 Ceiling mounted cassette type Ceiling suspended type (Multi flow) 600×600...
Page 13: Capacity Range
Capacity Range Mini UM S/M 3. Capacity Range Outdoor Units Capacity Range U-ML3 No of Indoor Units to be Connected Total Capacity Index of Indoor 50~130 62.5~162.5 70~182 Units to be Connected Indoor Units 1.25 Capacity Range Capacity Index 31.25 62.5...
Page 14: Part 2 Specifications
Mini UM S/M Part 2 Specifications 1. Specifications ..................6 1.1 Outdoor Units ..................6 1.2 Indoor Units ..................... 8 Specifications...
Page 15: Specifications
Specifications Mini UM S/M 1. Specifications Outdoor Units Model Name U-4ML3DPQ U-5ML3DPQ kcal / h 9,600 12,000 #1 Cooling Capacity Btu / h 38,200 47,700 11.2 14.0 kcal / h 10,700 13,700 #2 Heating Capacity Btu / h 42,600 54,600 12.5...
Page 16 Mini UM S/M Specifications Model Name U-6ML3DPQ kcal / h 13,300 #1 Cooling Capacity Btu / h 52,900 15.5 kcal / h 15,400 #2 Heating Capacity Btu / h 61,400 18.0 Casing Color Ivory White Dimensions: (H×W×D) 1,345×900×320 Heat Exchanger...
Page 17: Indoor Units
Specifications Mini UM S/M Indoor Units Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model S-20YM3HPS S-25YM3HPS S-32YM3HPS kcal/h 2,000 2,500 3,150 #1 Cooling Capacity (19.5˚CWB) Btu/h 7,900 9,900 12,500 #2 Cooling Capacity (19.0˚CWB) kcal/h 2,200 2,800 3,400 #3 Heating Capacity...
Page 18 Mini UM S/M Specifications Ceiling Mounted Cassette Type (Multi Flow) 600×600 Model S-40YM3HPS S-50YM3HPS kcal/h 4,000 5,000 #1 Cooling Capacity (19.5˚CWB) Btu/h 15,900 19,900 #2 Cooling Capacity (19.0˚CWB) kcal/h 4,300 5,400 #3 Heating Capacity Btu/h 17,000 21,500 Casing Galvanized Steel Plate Galvanized Steel Plate 260 (286)×575×575...
Page 19 Specifications Mini UM S/M Ceiling Mounted Cassette Corner Type Model S-25DM3HP3 S-32DM3HP3 S-40DM3HP3 S63DM3HP3 kcal/h 2,500 3,150 4,000 6,300 #1 Cooling Capacity (19.5˚CWB) Btu/h 9,900 12,500 15,900 25,000 #2 Cooling Capacity (19.0˚CWB) kcal/h 2,800 3,400 4,300 6,900 #3 Heating Capacity...
Page 20 Mini UM S/M Specifications Ceiling Mounted Duct Type Model S-40EM3HPQ S-50EM3HPQ S-63EM3HPQ kcal/h 4,000 5,000 6,300 #1 Cooling Capacity (19.5˚CWB) Btu/h 15,900 19,900 25,000 #2 Cooling Capacity (19.0˚CWB) kcal/h 4,300 5,400 6,900 #3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing...
Page 21 Specifications Mini UM S/M Ceiling Mounted Duct Type Model S-80EM3HPQ S-100EM3HPQ S-125EM3HPQ kcal/h 8,000 10,000 12,500 #1 Cooling Capacity (19.5˚CWB) Btu/h 31,800 39,700 49,600 11.6 14.5 #2 Cooling Capacity (19.0˚CWB) 11.2 14.0 kcal/h 8,600 10,800 13,800 #3 Heating Capacity Btu/h...
Page 22: Ceiling Suspended Type
Mini UM S/M Specifications Ceiling Suspended Type Model S-32TM3JPR S-63TM3JPR S-100TM3JPR kcal/h 3,150 6,300 10,000 #1 Cooling Capacity (19.5˚CWB) Btu/h 12,500 25,000 39,700 11.6 #2 Cooling Capacity (19.0˚CWB) 11.2 kcal/h 3,400 6,900 10,800 #3 Heating Capacity Btu/h 13,600 27,300 42,700 12.5...
Page 23 Specifications Mini UM S/M Wall Mounted Type Model S-20KM3HPR S-25KM3HPR S-32KM3HPR kcal/h 2,000 2,500 3,150 #1 Cooling Capacity (19.5˚CWB) Btu/h 7,900 9,900 12,500 #2 Cooling Capacity (19.0˚CWB) kcal/h 2,200 2,800 3,400 #3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color White (10Y9/0.5)
Page 24 Mini UM S/M Specifications Wall Mounted Type Model S-40KM3HPR S-50KM3HPR S-63KM3HPR kcal/h 4,000 5,000 6,300 #1 Cooling Capacity (19.5˚CWB) Btu/h 15,900 19,900 25,000 #2 Cooling Capacity (19.0˚CWB) kcal/h 4,300 5,400 6,900 #3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color...
Page 25: Floor Standing Type
Specifications Mini UM S/M Floor Standing Type Model S-20PM3HPQ S-25PM3HPQ S-32PM3HPQ kcal/h 2,000 2,500 3,150 #1 Cooling Capacity (19.5˚CWB) Btu/h 7,900 9,900 12,500 #2 Cooling Capacity (19.0˚CWB) kcal/h 2,200 2,800 3,400 #3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color Ivory White (5Y7.5/1)
Page 26 Mini UM S/M Specifications Floor Standing Type Model S-40PM3HPQ S-50PM3HPQ S-63PM3HPQ kcal/h 4,000 5,000 6,300 #1 Cooling Capacity (19.5˚CWB) Btu/h 15,900 19,900 25,000 #2 Cooling Capacity (19.0˚CWB) kcal/h 4,300 5,400 6,900 #3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color Ivory White (5Y7.5/1)
Page 27 Specifications Mini UM S/M Concealed Floor Standing Type Model S-20RM3HPQ S-25RM3HPQ S-32RM3HPQ kcal/h 2,000 2,500 3,150 #1 Cooling Capacity (19.5˚CWB) Btu/h 7,900 9,900 12,500 #2 Cooling Capacity (19.0˚CWB) kcal/h 2,200 2,800 3,400 #3 Heating Capacity Btu/h 8,500 10,900 13,600 Casing Color...
Page 28 Mini UM S/M Specifications Concealed Floor Standing Type Model S-40RM3HPQ S-50RM3HPQ S-63RM3HPQ kcal/h 4,000 5,000 6,300 #1 Cooling Capacity (19.5˚CWB) Btu/h 15,900 19,900 25,000 #2 Cooling Capacity (19.0˚CWB) kcal/h 4,300 5,400 6,900 #3 Heating Capacity Btu/h 17,000 21,500 27,300 Casing Color...
Page 29 Specifications Mini UM S/M Specifications...
Page 30: Part 3 List Of Electrical And Functional Parts
Mini UM S/M Part 3 List of Electrical and Functional Parts 1. List of Electrical and Functional Parts ...........22 1.1 Outdoor Unit ..................22 1.2 Indoor Unit ..................... 23 List of Electrical and Functional Parts...
Page 31: List Of Electrical And Functional Parts
List of Electrical and Functional Parts Mini UM S/M 1. List of Electrical and Functional Parts Outdoor Unit Model Remark Item Name Symbol (PCB terminal) Type JT100FCVD@4 Inverter — 3.2kW Compressor Output Crankcase heater (INV) E1HC A1P X6A Motor M1F·M2F 0.07kW...
Page 32: Indoor Unit
Mini UM S/M List of Electrical and Functional Parts Indoor Unit Model Parts Name Symbol Remark S-20YM3 S-25YM3 S-32YM3 S-40YM3 S-50YM3 Wired Remote CZ-02RT11P Controller Remote Option Controller Wireless Remote CZ-01RWY12P Controller AC 220~240V 50Hz Fan Motor 1φ55W 4P Thermal Fuse 135˚C Capacitor, fan motor 4.0µ...
Page 33 List of Electrical and Functional Parts Mini UM S/M Model Parts Name Symbol Remark S-40EM3 S-50EM3 S-63EM3 S-80EM3 S-100EM3 S-125EM3 Wired Remote CZ-02RT11P Controller Remote Option Controller Wireless Remote CZ-01RWF12P Controller AC 220~240V 50Hz Fan Motor 1φ100W 1φ160W 1φ270W 1φ430W Motors Thermal protector 135˚C : OFF...
Page 34 Mini UM S/M List of Electrical and Functional Parts Model Parts Name Symbol Remark S-20KM3 S-25KM3 S-32KM3 S-40KM3 S-50KM3 S-63KM3 Wired Remote CZ-02RT11P Option Controller Remote Controller Wireless Remote CZ-01RWK22P Option Controller AC 220~240V 50Hz Fan Motor 1φ40W 1φ43W Motors Thermal protector 130˚C : OFF...
Page 35 List of Electrical and Functional Parts Mini UM S/M List of Electrical and Functional Parts...
Page 36: Part 4 Refrigerant Circuit
Mini UM S/M Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................28 1.1 U-4-5-6ML3DPQ..................28 2. Functional Parts Layout ................30 2.1 U-4-5-6ML3DPQ..................30 Refrigerant Circuit...
Page 37: Refrigerant Circuit
Refrigerant Circuit Mini UM S/M 1. Refrigerant Circuit U-4-5-6ML3DPQ No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52 Hz and 210 Hz by using Inverter compressor (INV) the inverter. 20 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan speed by using the inverter.
Page 38 Mini UM S/M Refrigerant Circuit C : 3D043711 Refrigerant Circuit...
Page 39: Functional Parts Layout
Functional Parts Layout Mini UM S/M 2. Functional Parts Layout U-4-5-6ML3DPQ Birds-eye view Solenoid valve (Connector color : PINK) S1NPH High pressure sensor (Connector color : RED) S1NPH High pressure sensor lead wire (Connector color : RED) (Low voltage) Four way valve coil...
Page 40: Part 5 Function
Mini UM S/M Part 5 Function 1. Operation Mode ..................32 2. Basic Control..................33 2.1 Normal Operation .................. 33 2.2 Compressor PI Control ................34 2.3 Electronic Expansion Valve PI Control ..........35 2.4 Cooling Operation Fan Control.............. 36 3. Special Control..................37 3.1 Startup Control ..................
Page 41: Operation Mode
Operation Mode Mini UM S/M 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF...
Page 42: Basic Control
Mini UM S/M Basic Control 2. Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
Page 43: Compressor Pi Control
Basic Control Mini UM S/M Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation]...
Page 44: Electronic Expansion Valve Pi Control
Mini UM S/M Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).
Page 45: Cooling Operation Fan Control
Basic Control Mini UM S/M Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan.
Page 46: Special Control
Mini UM S/M Special Control 3. Special Control Startup Control On activation, following control is performed to lighten load of the compressor by back liquid and the like. Also, the position of the four way valve is defined. 3.1.1 Startup Control in Cooling Operation...
Page 47: Oil Return Operation
Special Control Mini UM S/M Oil Return Operation Oil flown from the compressor to the side of system is collected by oil-returning operation, in case of that oil in the compressor runs down. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] The cooling oil-returning operation is started referring following conditions.
Page 48 Mini UM S/M Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. Integrated amount of displaced oil Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.)
Page 49: Defrosting Operation
Special Control Mini UM S/M Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions.
Page 50: Pump-Down Residual Operation
Mini UM S/M Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.
Page 51: Restart Standby
Special Control Mini UM S/M Restart Standby Restart is stood by force to prevent frequent power-on/off and to equalize pressure in the refrigerant system. Actuator Operation Remarks  Compressor Ta>30°C: STEP4  Outdoor unit fan Ta≤30°C: OFF  Four way valve Keep former condition.
Page 52: Stopping Operation
Mini UM S/M Special Control Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1)
Page 53: Pressure Equalization Prior To Startup
Special Control Mini UM S/M Pressure Equalization Prior to Startup Before activating the compressor, the activation load is lightened by equalization across the compressor. In addition, inverters turn on electricity and capacitors are charged. Actuator Operation Remarks  Compressor ...
Page 54: Protection Control
Mini UM S/M Protection Control 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure.
Page 55: Low Pressure Protection Control
Protection Control Mini UM S/M Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited LP pressure sensor detection value Pe < 0.25MPa Pe >...
Page 56: Discharge Pipe Protection Control
Mini UM S/M Protection Control Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [INV compressor] Value of INV compressor discharge pipe...
Page 57: Inverter Protection Control
Protection Control Mini UM S/M Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. [Inverter overcurrent protection control] Not limited •Inverter current ≤...
Page 58: Other Control
Mini UM S/M Other Control 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adaptor is required.
Page 59: Outline Of Control (Indoor Unit)
Outline of Control (Indoor Unit) Mini UM S/M 6. Outline of Control (Indoor Unit) Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped While the Cooling Thermostat is Remote controller "A3"...
Page 60 Mini UM S/M Outline of Control (Indoor Unit) 6.1.3 When the Float Switch is Tripped During Heating Operation: Remote controller "A3" flashing malfunction stop Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. (VL010) During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.
Page 61: Louver Control For Preventing Ceiling Dirt
Outline of Control (Indoor Unit) Mini UM S/M Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.
Page 62: Thermostat Sensor In Remote Controller
Mini UM S/M Outline of Control (Indoor Unit) Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”)
Page 63 Outline of Control (Indoor Unit) Mini UM S/M Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.
Page 64: Freeze Prevention
Mini UM S/M Outline of Control (Indoor Unit) Freeze Prevention Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit Prevention by Off heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below.
Page 65: View Of Operations Of Swing Flaps
Outline of Control (Indoor Unit) Mini UM S/M View of Operations of Swing Flaps Swing flaps work as following. Flap control Swinging Level Level Level Hot-start from defrosting Setting the wind direction Level Level Level Swinging Level Level Level Defrosting...
Page 66: Part 6 Test Operation
Mini UM S/M Part 6 Test Operation 1. Test Operation ..................58 1.1 Procedure and Outline................58 1.2 Operation When Power is Turned On ........... 61 2. Outdoor Unit PC Board Layout .............62 3. Field Setting ..................63 3.1 Field Setting from Remote Controller ............ 63 3.2 Field Setting from Outdoor Unit .............
Page 67: Test Operation
Test Operation Mini UM S/M 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Is the power supply single-phase 220-230V / 50Hz? Check the below items.
Page 68 Mini UM S/M Test Operation 1.1.3 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST ...
Page 69 Test Operation Mini UM S/M 1.1.4 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 30˚CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...
Page 70: Operation When Power Is Turned On
Mini UM S/M Test Operation Operation When Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P ..
Page 71: Outdoor Unit Pc Board Layout
Outdoor Unit PC Board Layout Mini UM S/M 2. Outdoor Unit PC Board Layout Outdoor unit PC board (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P MODE RETURN TEST RESET (1) Microcomputer normal monitor...
Page 72: Field Setting
Mini UM S/M Field Setting 3. Field Setting Field Setting from Remote Controller Individual function of indoor unit can be changed from the remote controller. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description.
Page 73 Field Setting Mini UM S/M 3.1.2 Wireless Remote Controller - Indoor Unit CZ-01/02 RW type MODE NO. FIELD SET MODE SECOND CODE NO. FIRST CODE NO. (V2770) 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.”...
Page 74 Mini UM S/M Field Setting 3.1.3 Simplified Remote Controller CZ-02RE11P MODE NO. FIRST CODE NO. UNIT NO. SECOND CODE NO. (V1405) Group No. setting by simplified remote controller. 1. Remove the cover of remote controller. 2. While in normal mode, press the [BS6] BUTTON (field set) to enter the FIELD SET MODE.
Page 75 Field Setting Mini UM S/M 3.1.4 Setting Contents and Code No. – VRF Unit Mode Setting Setting Contents Second Code No.(Note 3) Switch system indoor Note 2 unit 10(20) Filter contamination heavy/ Super Light Approx. Heavy Approx. — — settings...
Page 76 Mini UM S/M Field Setting 3.1.5 Applicable Range of Field Setting Mode No. Setting Setting Contents Ceiling mounted cassette type Ceiling Ceiling Switch mounted built- mounted Double flow Multi flow Corner type in type built-in type Filter sign Ultra long life filter sign —...
Page 77: Detailed Explanation Of Setting Modes
Field Setting Mini UM S/M 3.1.6 Detailed Explanation of Setting Modes Filter Sign Setting If switching the filter sign ON time, set as given in the table below. Set Time Filter Specs. Lighting interval of the filter sign Setting (hours) Setting Mode No.
Page 78 Mini UM S/M Field Setting Air Flow Adjustment - Ceiling height Make the following setting according to the ceiling height. The setting position No. is set to “01” at the factory. In the Case of KM3, TM3 Setting Switch Setting Position Mode No.
Page 79 Field Setting Mini UM S/M Setting of Air Flow Direction Adjustment Range Make the following air flow direction setting according to the respective purpose. (S2537) Setting Table Mode No. First Code No. Second Code No. Setting 13 (23) Upward (Draft prevention)
Page 80 Mini UM S/M Field Setting 3.1.7 Centralized Control Group No. Setting CZ-01RT Type If carrying out centralized control by central remote controller or unified ON/OFF controller, group No. must be set for each group individually by remote controller. Group No. setting by remote controller for centralized control 1.
Page 81 Field Setting Mini UM S/M Group No. Setting Example Indoor unit P1-P2 P1-P2 P1-P2 P1-P2 Central remote controller Remote controller centralized control Unified ON/OFF controller (automatic address) Group No. for 1-00 1-01 1-02 centralized control P1-P2 P1-P2 P1-P2 P1-P2 No remote controller...
Page 82 Mini UM S/M Field Setting 3.1.8 Setting of Operation Control Mode from Remote Controller (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote controller. Furthermore, operations such as remote controller ON/OFF can be limited in accordance with the combination conditions.
Page 83 Field Setting Mini UM S/M How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling Operation Mode temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below.
Page 84: Field Setting From Outdoor Unit
Mini UM S/M Field Setting Field Setting from Outdoor Unit 3.2.1 Setting by dip switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by...
Page 85 Field Setting Mini UM S/M MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”. Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc. Usually used in servicing the system.
Page 86 Mini UM S/M Field Setting a. “Setting mode 1” “Normally, “Setting mode 1” is set. In case of other status, push MODE button (BS1) one time and set to ìSetting mode 1”. Display for malfunction/preparing/test-run LED display example ∗ The current state is displayed.
Page 87 Field Setting Mini UM S/M b. “Setting mode 2” Setting item Description Indoor unit forced Allows forced operation of indoor unit fan while unit is fan H stopped. (H tap) Push and hold the MODE button (BS1) for 5 seconds and set to Indoor unit forced Allows forced operation of indoor unit.
Page 88 Mini UM S/M Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 ∗ Normal operation Indoor forced fan H Indoor forced fan H 8777787 8777778 ∗ Normal operation...
Page 89 Field Setting Mini UM S/M c. Monitor mode LED display Setting item Data display 9 7 7 7 7 7 7 Various settings See below To enter the monitor mode, push the MODE button (BS1) when in 9 7 7 7 8 7 8...
Page 90: Detail Of Setting Mode
Mini UM S/M Field Setting Detail of Setting Mode 3.3.1 Cool / Heat Mode Switching There are the following 2 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller.
Page 91 Field Setting Mini UM S/M Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to “outdoor” (factory set).
Page 92 Mini UM S/M Field Setting 3.3.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2-3 dB.
Page 93 Field Setting Mini UM S/M Image of operation in the case of A If capacity precedence is set in Operation sound “Capacity precedence setting”, the fan speed will be increased according to the load of air conditioning when load is heavier.
Page 94 Mini UM S/M Field Setting Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition.
Page 95 Field Setting Mini UM S/M Image of operation in the case of A Power consumption The power Rated power consumption consumption during 80 % of rated power consumption the demand level 1 Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing...
Page 96 Mini UM S/M Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 2 is entered and H1P lights.
Page 97 Field Setting Mini UM S/M Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P...
Page 98 Mini UM S/M Field Setting 3.3.4 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units to turn on some solenoid valves. Both the outdoor unit and the indoor unit are forbidden to operation.
Page 99 Field Setting Mini UM S/M Test Operation...
Page 100: Part 7 Troubleshooting
Mini UM S/M Part 7 Troubleshooting 1. Troubleshooting by Remote Controller ..........93 1.1 The INSPECTION / TEST Button............93 1.2 Self-Diagnosis by Wired Remote Controller .......... 94 1.3 Self-Diagnosis by Wireless Remote Controller........95 1.4 Operation of the Remote Controller’s Inspection / Test Operation Button ................
Page 101 Mini UM S/M 4.31 “L9” Outdoor Unit: Inverter Start up Error..........139 4.32 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board ................140 4.33 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor ..............142 4.34 “PJ”...
Page 102: Troubleshooting By Remote Controller
Mini UM S/M Troubleshooting by Remote Controller 1. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the button on the remote control. Depress button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.
Page 103: Self-Diagnosis By Wired Remote Controller
Troubleshooting by Remote Controller Mini UM S/M Self-Diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what...
Page 104: Self-Diagnosis By Wireless Remote Controller
Mini UM S/M Troubleshooting by Remote Controller Self-Diagnosis by Wireless Remote Controller In the Case of You can confirm the error code as following. CZ-01/02RW Type If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes.
Page 105 Troubleshooting by Remote Controller Mini UM S/M The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. “UP” button “DOWN” button (SE007) Troubleshooting...
Page 106: Operation Of The Remote Controller's Inspection / Test Operation Button
Mini UM S/M Troubleshooting by Remote Controller Operation of the Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...
Page 107: Remote Controller Service Mode
Troubleshooting by Remote Controller Mini UM S/M Remote Controller Service Mode You can take “service data” and make a “service setting” in the service mode, with operating the button on the remote controller. How to Enter the Service Mode Normal operation...
Page 108 Mini UM S/M Troubleshooting by Remote Controller Mode Function Contents and operation method Remote controller display example Malfunction Display malfunction hysteresis. hysteresis display The history No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9...
Page 109: List Of Malfunction Code
List of Malfunction Code Mini UM S/M 2. List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Indoor Error of external protection device Unit PC board defect, E...
Page 110 Mini UM S/M List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Referred Outdoor Malfunction of power unit — Unit Malfunction of transmission between inverter and control PC board Inverter over-ripple protection —...
Page 111: Malfunction Code Indication By Outdoor Unit Pcb
Mini UM S/M Malfunction Code Indication by Outdoor Unit PCB 3. Malfunction Code Indication by Outdoor Unit PCB <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE button (BS1) when in “Setting mode 1”.
Page 112 Mini UM S/M Malfunction Code Indication by Outdoor Unit PCB Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2...
Page 113: Troubleshooting By Indication On The Remote Controller
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4. Troubleshooting by Indication on the Remote Controller “A0” Indoor Unit: Error of External Protection Device Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction...
Page 114: A1" Indoor Unit: Pc Board Defect
Mini UM S/M Troubleshooting by Indication on the Remote Controller “A1” Indoor Unit: PC Board Defect Remote Controller Display Applicable All indoor unit models Models Method of Check data from E2PROM. Malfunction Detection Malfunction When data could not be correctly received from the E2PROM Decision E2PROM : Type of nonvolatile memory.
Page 115: A3" Indoor Unit: Malfunction Of Drain Level Control System (33H)
Troubleshooting by Indication on the Remote Controller Mini UM S/M “A3” Indoor Unit: Malfunction of Drain Level Control System (33H) Remote Controller Display Applicable All indoor unit models Models Method of By float switch OFF detection Malfunction Detection Malfunction When rise of water level is not a condition and the float switch goes OFF.
Page 116 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. The float...
Page 117: A6" Indoor Unit: Fan Motor (M1F) Lock, Overload
Troubleshooting by Indication on the Remote Controller Mini UM S/M “A6” Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display Applicable All indoor unit models Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor...
Page 118: A7" Indoor Unit: Malfunction Of Swing Flap Motor (Ma)
Mini UM S/M Troubleshooting by Indication on the Remote Controller “A7” Indoor Unit: Malfunction of Swing Flap Motor (MA) Remote Controller Display Applicable All indoor unit models Models Method of Utilizes ON/OFF of the limit switch when the motor turns.
Page 119 Troubleshooting by Indication on the Remote Controller Mini UM S/M Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is power supply Provide 220~240V power 220~240V provided? supply. Indoor unit is a model equipped Replace indoor unit PC board.
Page 120: A9" Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (20E)
Mini UM S/M Troubleshooting by Indication on the Remote Controller “A9” Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (20E) Remote Controller Display Applicable All indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of moving part of electronic expansion valve...
Page 121 Troubleshooting by Indication on the Remote Controller Mini UM S/M ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins.
Page 122: Af" Indoor Unit: Drain Level Above Limit
Mini UM S/M Troubleshooting by Indication on the Remote Controller “AF” Indoor Unit: Drain Level above Limit Remote Controller Display Applicable All indoor unit models Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in Malfunction non-operation.
Page 123: Aj" Indoor Unit: Malfunction Of Capacity Determination Device
Troubleshooting by Indication on the Remote Controller Mini UM S/M “AJ” Indoor Unit: Malfunction of Capacity Determination Device Remote controller display Applicable All indoor unit models Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory...
Page 124: C4" Indoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger
Mini UM S/M Troubleshooting by Indication on the Remote Controller “C4” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by heat exchanger thermistor.
Page 125: C5" Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.10 “C5” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display Applicable All indoor unit models Models Method of Malfunction detection is carried out by temperature detected by gas pipe thermistor.
Page 126: C9" Indoor Unit: Malfunction Of Thermistor (R1T) For Suction Air
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.11 “C9” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by suction air temperature Malfunction thermistor.
Page 127: Ca" Indoor Unit: Malfunction Of Thermistor For Discharge Air
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.12 “CA” Indoor Unit: Malfunction of Thermistor for Discharge Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by discharge air temperature Malfunction thermistor.
Page 128: Cj" Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.13 “CJ” Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction detection is carried out by temperature detected by remote controller air Malfunction temperature thermistor.
Page 129: E1" Outdoor Unit: Pc Board Defect
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.14 “E1” Outdoor Unit: PC Board Defect Remote Controller Display Applicable AII outdoor unit models Models Method of Check data from E2PROM Malfunction Detection Malfunction When data could not be correctly received from the E2PROM Decision E2PROM : Type of nonvolatile memory.
Page 130: E3" Outdoor Unit: Actuation Of High Pressure Switch
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.15 “E3” Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected when the contact of the high pressure protection switch opens.
Page 131: E4" Outdoor Unit: Actuation Of Low Pressure Switch
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.16 “E4” Outdoor Unit: Actuation of Low Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure.
Page 132: E5" Compressor Motor Lock
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.17 “E5” Compressor Motor Lock Remote Controller Display Applicable AII outdoor unit models Models Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and Malfunction compressor, and detects the position signal pattern.
Page 133: E7" Malfunction Of Outdoor Unit Fan Motor
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.18 “E7” Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction of fan motor system is detected according to the fan speed detected by hall IC Malfunction when the fan motor runs.
Page 134 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Check No. 9 Check on connector of fan motor (Power supply cable) Check No. 11 Check on pulse input of position signal of fan inverter Is the pulse inputted? Replace the fan motor of outdoor unit.
Page 135: E9" Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve Remote Controller Display Applicable AII outdoor unit models Models Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil...
Page 136 Mini UM S/M Troubleshooting by Indication on the Remote Controller ∗1 Coil check method for the moving part of the electronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins.
Page 137: F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.20 “F3” Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected according to the temperature detected by the discharge pipe Malfunction temperature sensor.
Page 138: H9" Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T)
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.21 “H9” Outdoor Unit: Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable AII outdoor unit models Models Method of The abnormal detection is based on current detected by current sensor.
Page 139: J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T)
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.22 “J3” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature Malfunction thermistor.
Page 140: J5" Outdoor Unit: Malfunction Of Thermistor (R2T) For Suction Pipe
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.23 “J5” Outdoor Unit: Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature Malfunction thermistor.
Page 141: J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.24 “J6” Outdoor Unit: Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Page 142: J9" Malfunction Of Receiver Gas Pipe Thermistor (R5T)
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.25 “J9” Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor Malfunction (= Subcooling heat exchanger gas pipe thermistor).
Page 143: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.26 “JA” Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the pressure detected by the high pressure sensor.
Page 144: Jc" Outdoor Unit: Malfunction Of Low Pressure Sensor
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.27 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from pressure detected by low pressure sensor.
Page 145: L4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.28 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable AII outdoor unit models Models Method of Fin temperature is detected by the thermistor of the radiation fin.
Page 146: L5" Outdoor Unit: Inverter Compressor Abnormal
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.29 “L5” Outdoor Unit: Inverter Compressor Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor.
Page 147: L8" Outdoor Unit: Inverter Current Abnormal
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.30 “L8” Outdoor Unit: Inverter Current Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected.
Page 148: L9" Outdoor Unit: Inverter Start Up Error
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.31 “L9” Outdoor Unit: Inverter Start up Error Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction...
Page 149: Lc" Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.32 “LC” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.
Page 150 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors between the main PC board (A1P) and...
Page 151: P4" Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.33 “P4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating.
Page 152: Pj" Outdoor Unit: Faulty Combination Of Inverter And Fan Driver
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.34 “PJ” Outdoor Unit: Faulty Combination of Inverter and Fan Driver Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PC board and control PC board by micro- Malfunction computer.
Page 153: Uo" Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.35 “UO” Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor.
Page 154: U2" Power Supply Insufficient Or Instantaneous Failure
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.36 “U2” Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Page 155: Troubleshooting
Troubleshooting by Indication on the Remote Controller Mini UM S/M Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. connection wire connected Repair wiring. between the connector X205A and X25A? Turn on again.
Page 156: U3" Check Operation Not Executed
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.37 “U3” Check Operation not Executed Remote Controller Display Applicable AII outdoor unit models Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation.
Page 157: U4" Malfunction Of Transmission Between Indoor Units And Outdoor Units
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.38 “U4” Malfunction of Transmission between Indoor Units and Outdoor Units Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Microcomputer checks if transmission between indoor and outdoor units is normal.
Page 158 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor...
Page 159: U5" Malfunction Of Transmission Between Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.39 “U5” Malfunction of Transmission between Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer is signal Malfunction transmission between indoor unit and remote controller (main and sub) is normal.
Page 160: U8" Malfunction Of Transmission Between Master And Slave Remote Controllers
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.40 “U8” Malfunction of Transmission between Master and Slave Remote Controllers Remote Controller Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote controller, check the system using microcomputer if signal Malfunction transmission between indoor unit and remote controller (main and sub) is normal.
Page 161: U9" Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.41 “U9” Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions...
Page 162 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. "U9" has been displayed for 2 Re-diagnose by display after minutes or more.
Page 163: Ua" Excessive Number Of Indoor Units
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.42 “UA” Excessive Number of Indoor Units Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Causes Defect of outdoor unit PC board (A1P) Mismatching of the refrigerant type of indoor and outdoor unit.
Page 164: Uc" Address Duplication Of Central Remote Controller
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.43 “UC” Address Duplication of Central Remote Controller Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller...
Page 165: Ue" Malfunction Of Transmission Between Central Remote Controller And Indoor Unit
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.44 “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models Centralized controller Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is Malfunction normal.
Page 166 Mini UM S/M Troubleshooting by Indication on the Remote Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been remove Reset power supply...
Page 167: Uf" Refrigerant System Not Set, Incompatible Wiring/Piping
Troubleshooting by Indication on the Remote Controller Mini UM S/M 4.45 “UF” Refrigerant System not Set, Incompatible Wiring/ Piping Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed...
Page 168: Uh" Malfunction Of System, Refrigerant System Address Undefined
Mini UM S/M Troubleshooting by Indication on the Remote Controller 4.46 “UH” Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable AII indoor unit models Models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed...
Page 169: Troubleshooting By Indication On The Centralized Remote Controller
Troubleshooting by Indication on the Centralized Remote Controller Mini UM S/M 5. Troubleshooting by Indication on the Centralized Remote Controller “UE” Malfunction of Transmission between Centralized Remote Controller and Indoor Unit Remote Controller Display Applicable AII indoor unit models Models...
Page 170: M1" Pc Board Defect
Mini UM S/M Troubleshooting by Indication on the Centralized Remote Controller “M1” PC Board Defect Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of central remote controller PC board Causes Troubleshooting Replace the central remote controller PC board.
Page 171: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
Troubleshooting by Indication on the Centralized Remote Controller Mini UM S/M “M8” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control...
Page 172: Ma" Improper Combination Of Optional Controllers For Centralized Control
Mini UM S/M Troubleshooting by Indication on the Centralized Remote Controller “MA” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control...
Page 173 Troubleshooting by Indication on the Centralized Remote Controller Mini UM S/M Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring the wiring adaptor for...
Page 174: Mc" Address Duplication, Improper Setting
Mini UM S/M Troubleshooting by Indication on the Centralized Remote Controller “MC” Address Duplication, Improper Setting Remote Controller Display Applicable Centralized remote controller Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote controller Causes Troubleshooting...
Page 175: Troubleshooting By Indication On The Unified On/Off Controller
Troubleshooting by Indication on the Unified ON/OFF Controller Mini UM S/M 6. Troubleshooting by Indication on the Unified ON/ OFF Controller Operation Lamp Blinks Remote Operation lamp blinks Controller Display Applicable All models of indoor units Models Unified ON/OFF controller...
Page 176 Mini UM S/M Troubleshooting by Indication on the Unified ON/OFF Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Is a malfunction code displayed on the Diagnose the cause with the...
Page 177: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)
Troubleshooting by Indication on the Unified ON/OFF Controller Mini UM S/M Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote “under host computer integrated control” (Repeats single blink) Controller Display Applicable Unified ON/OFF controller Models Central controller, Schedule timer...
Page 178 Mini UM S/M Troubleshooting by Indication on the Unified ON/OFF Controller Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has a once connected optional controller for centralized Reset power supply...
Page 179 Troubleshooting by Indication on the Unified ON/OFF Controller Mini UM S/M Is the wiring adaptor for Cannot be used in electrical appendices combination with a wiring connected? adaptor for electrical appendices. Remove the wiring adaptor for electrical appendices and reset the...
Page 180: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)
Mini UM S/M Troubleshooting by Indication on the Unified ON/OFF Controller Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote “under host computer integrated control” (Repeats double blink) Controller Display Applicable Unified ON/OFF controller Models Method of Malfunction...
Page 181: Troubleshooting (Op: Schedule Timer)
Troubleshooting (OP: Schedule Timer) Mini UM S/M 7. Troubleshooting (OP: Schedule Timer) “UE” Malfunction of Transmission between Central Remote Controller and Indoor Unit Remote Controller Display Applicable Schedule timer Models Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is Malfunction normal.
Page 182 Mini UM S/M Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removeor its address simultaneously for all optional...
Page 183: M1" Pc Board Defect
Troubleshooting (OP: Schedule Timer) Mini UM S/M “M1” PC Board Defect Remote Controller Display Applicable Schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of schedule timer PC board Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.
Page 184: M8" Malfunction Of Transmission Between Optional Controllers For Centralized Control
Mini UM S/M Troubleshooting (OP: Schedule Timer) “M8” Malfunction of Transmission between Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission between optional controllers for centralized control...
Page 185: Ma" Improper Combination Of Optional Controllers For Centralized Control
Troubleshooting (OP: Schedule Timer) Mini UM S/M “MA” Improper Combination of Optional Controllers for Centralized Control Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper combination of optional controllers for centralized control Causes More than one master controller is connected.
Page 186 Mini UM S/M Troubleshooting (OP: Schedule Timer) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Cannot be used in combination with a wiring Is the wiring adaptor for electrical adaptor for electrical appendices.
Page 187: Mc" Address Duplication, Improper Setting
Troubleshooting (OP: Schedule Timer) Mini UM S/M “MC” Address Duplication, Improper Setting Remote Controller Display Applicable All models of indoor units, schedule timer Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of optional controller for centralized control...
Page 188: Check
Mini UM S/M Check 8. Check Check No. 8 Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuiting, while connector or relay connector is disconnected.
Page 189 Check Mini UM S/M Check No. 11 Check for Fan Speed Pulse Input on Outdoor Unit PC Board (1) Disconnect the connector X206A with the power supply OFF and Operation OFF. (2) Is the voltage between pins 4 and 3 of X206A about 15 VDC after turning the power supply (3) Is the voltage between pins 4 and 1 of X206A about 5 VDC? (4) Connect the connector X206A with the power supply OFF and Operation OFF.
Page 190: Part 8 Appendix
Mini UM S/M Part 8 Appendix 1. Piping Diagrams..................182 1.1 Outdoor Unit ..................182 1.2 Indoor Unit ..................183 2. Wiring Diagrams for Reference............185 2.1 Outdoor Unit ..................185 2.2 Indoor Unit ..................186 3. Thermistor Resistance / Temperature Characteristics .......190 4.
Page 191: Piping Diagrams
Piping Diagrams Mini UM S/M 1. Piping Diagrams Outdoor Unit U-4ML3DPQ U-5ML3DPQ U-6ML3DPQ Four way valve Service port High pressure Pressure sensor Heat exchanger regulating valve Filter Filter High pressure switch Solenoid Capillary valve tube Compressor Low pressure sensor Check...
Page 192: Indoor Unit
Mini UM S/M Piping Diagrams Indoor Unit S-20,25,32,40,50YM3 Gas pipe connection port Heate xchanger Liquid pipe connection port Filter Filter Electronic expansion valve 4D040157 S-25,32,40,63DM3 S-40,50,63,80,100,125EM3 S-32,63,100TM3 S-20,25,32,40,50,63PM3 S-20,25,32,40,50,63RM3 Gas pipe connection port Heat exchanger Liquid pipe connection port APPLICABLE MODEL...
Page 193 Piping Diagrams Mini UM S/M S-20,25,32,40,50,63KM3 Gas piping connection port Heat exchanger Flare connection : φ15.9 or less Attached piping : Above φ19.1 Liquid piping connection port (Flare connection) Electronic Filter Filter expansion valve R1T : Thermistor for suction air temperature...
Page 194: Wiring Diagrams For Reference
Mini UM S/M Wiring Diagrams for Reference 2. Wiring Diagrams for Reference Outdoor Unit U-4ML3DPQ U-5ML3DPQ U-6ML3DPQ Appendix...
Page 195: Indoor Unit
Wiring Diagrams for Reference Mini UM S/M Indoor Unit S-20,25,32,40,50YM3 PUSH BUTTON ( ON/OFF ) PRINTED CIRCUIT BOARD CAPACITOR ( M1F ) LIGHT EMITTING DIODE ( ON-RED ) FUSE ( B , 5A , 250V ) LIGHT EMITTING DIODE LIGHT EMITTING DIODE...
Page 196 Mini UM S/M Wiring Diagrams for Reference S-40,50,63,80,100,125EM3 THERMISTOR ( AIR ) INDOOR UNIT THERMISTOR ( COIL ) PRINTED CIRCUIT BOARD R2T·R3T TERMINAL BOARD FLOAT SWITCH CAPACITOR ( M1F ) POWER SUPPLY TRANSFORMER 220-240V 220V ( 220-240V/22V ) ELECTRIC PARTS BOX FUSE ( B , 5A , 250V ) 40·50·63·80TYPE...
Page 197 Wiring Diagrams for Reference Mini UM S/M S-32,63,100TM3 NOTE-4 RECEIVER/DISPLAY UNIT ( WIRELESS REMOTE CONTROLLER ) POWER SUPPLY 220-240V 220V 50Hz 60Hz X23A NOTE-6 t˚ t˚ t˚ X13A X12A X11A X18A NOTE-5 INPUT FROM OUTSIDE NOTE-3 NOTES ) X30A TRANSMISSION t˚...
Page 198 Mini UM S/M Wiring Diagrams for Reference S-20,25,32,40,50,63PM3 S-20,25,32,40,50,63RM3 TERMINAL BLOCK ( CONTROL ) INDOOR UNIT PRINTED CIRCUIT BOARD ELECTRONIC EXPANSION VALVE CAPACITOR ( M1F ) WIRED REMOTE CONTROLLER POWER SUPPLY FUSE ( B , 5A , 250V ) THERMISTOR ( AIR )
Page 199: Thermistor Resistance / Temperature Characteristics
Thermistor Resistance / Temperature Characteristics Mini UM S/M 3. Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe (kΩ) T˚C...
Page 200 Mini UM S/M Thermistor Resistance / Temperature Characteristics Outdoor Unit Thermistors for Discharge Pipe (R3T) (kΩ)) T˚C T˚C T˚C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41...
Page 201: Pressure Sensor
Pressure Sensor Mini UM S/M 4. Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa)
Page 202: Part 9 Precautions For New Refrigerant (R410A)
Mini UM S/M Part 9 Precautions for New Refrigerant (R410A) 1. Precautions for New Refrigerant (R410A)...........194 1.1 Outline ....................194 1.2 Service Tools..................196 Precautions for New Refrigerant (R410)
Page 203: Precautions For New Refrigerant (R410A)
Precautions for New Refrigerant (R410A) Mini UM S/M 1. Precautions for New Refrigerant (R410A) Outline 1.1.1 About Refrigerant R410A Characteristics of new refrigerant, R410A 1. Performance Almost the same performance as R22 and R407C 2. Pressure Working pressure is approx. 1.4 times more than R22 and R407C.
Page 204 Mini UM S/M Precautions for New Refrigerant (R410A) Thermodynamic characteristic of R410A Temperature Steam pressure Density Specific heat at constant Specific enthalpy Specific entropy (kPa) (kg/m pressure (kJ/kgK) (kJ/kg) (kJ/KgK) Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor...
Page 205: Service Tools
Precautions for New Refrigerant (R410A) Mini UM S/M Service Tools R410A is used under higher working pressure, compared to previous refrigerants (R22,R407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R22,R407C) can not be used for products that use new refrigerants.
Page 206 Mini UM S/M Precautions for New Refrigerant (R410A) 1. Flaring tool Flare gauge Specifications 2 Dimension A Unit:mm Tube O.D. -0.4 Nominal size Class-2 (R410A) Class-1 (Conventional) 6.35 9.52 13.2 13.0 12.70 16.6 16.2 15.88 19.7 19.4 19.05 24.0 23.3...
Page 207 Precautions for New Refrigerant (R410A) Mini UM S/M 2. Torque wrench Specifications 2 Dimension B Unit:mm Nominal size Class-1 Class-2 Previous No change in tightening torque No change in pipes of other sizes Differences 2 Change of dimension B Only 1/2", 5/8" are extended...
Page 208 Mini UM S/M Precautions for New Refrigerant (R410A) 4. Leak tester Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R410A, R407C, R404A, R507A, R134a, etc. Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen.
Page 209 Precautions for New Refrigerant (R410A) Mini UM S/M 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R410A (Hose with ball valve) Specifications 2 Working pressure 5.08 MPa (51.8 kg/cm...
Page 210 Mini UM S/M Precautions for New Refrigerant (R410A) 9. Weigher for refrigerant charge Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging.
Page 211 Precautions for New Refrigerant (R410A) Mini UM S/M Precautions for New Refrigerant (R410A)
Page 212: Index
Mini UM S/M Index E7 ................. 124 E9 ................. 126 A0................104 electrical and functional parts A1................105 indoor unit ............23 A3................106 outdoor unit............22 A6................108 electronic expansion valve PI control ..... 35 A7................109 error of external protection device......104 A9................111 excessive number of indoor units......
Page 213 Mini UM S/M M1 ..............161, 174 P4 ................. 142 M8 ..............162, 175 PC board defect ......105, 120, 161, 174 MA..............163, 176 PJ ................. 143 malfunction code indication by outdoor unit PCB..102 power supply insufficient or instantaneous failure 145 malfunction of capacity determination device ..114 precautions for new refrigerant (R410A) ....
Page 214 Mini UM S/M Drawings & Flow Charts freeze prevention ........... 55 functional parts layout ..........30 abnormal discharge pipe temperature ....128 actuation of high pressure switch......121 actuation of low pressure switch ......122 gauge manifold for R410A ........199 address duplication of central remote controller ...155 address duplication, improper setting ..
Page 215 Mini UM S/M malfunction of thermostat sensor in heating ............. 54 remote controller ..........119 torque wrench ............198 malfunction of transmission between central remote turn power on ............58 controller and indoor unit ...... 156 malfunction of transmission between centralized remote controller and indoor unit ....160...
Page 216 Contact Details: E mail: aircon.info@panasonic.co.uk Telephone: 01344 476599 www.panasonic.co.uk Address: Panasonic Air Conditioning Panasonic House Willoughby Road, Bracknell Berks, RG12 8FP...

Panasonic Mini UM S Service Manual

Quick Links

Troubleshooting

Related Manuals for Panasonic Mini UM S

Summary of Contents for Panasonic Mini UM S

Table of Contents