Panasonic WH-MDC09C3E5 Servise Manual
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Panasonic WH-MDC09C3E5 Servise Manual

Monobloc air-to-water heatpump system
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See also: Service Manual , Installation Manual
Monobloc Air-to-Water Heatpump System
Monobloc Unit
WH-MDC09C3E5
WH-MDC12C6E5
WH-MDC14C6E5
WH-MDC16C6E5
Order No. PHAAM1008099C2
©
Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010.
Unauthorized copying and distribution is a violation of law.

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Summary of Contents for Panasonic WH-MDC09C3E5

  • Page 1 Order No. PHAAM1008099C2 Monobloc Air-to-Water Heatpump System Monobloc Unit WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 © Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2010. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    17.1. To Remove The Cabinet Front Plate -------------- 114 7 Block Diagram --------------------------------------------------- 24 17.2. To Remove The Cabinet Top Plate----------------- 114 7.1. WH-MDC09C3E5 ---------------------------------------- 24 17.3. To Remove The Cabinet Rear Plate --------------- 115 7.2. WH-MDC12C6E5 WH-MDC14C6E5 17.4. To Remove Pressure Gauge ------------------------ 115 17.5.

  • Page 3: Safety Precautions

    1 Safety Precautions • Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing for Monobloc Air-to-Water Heatpump System (here after referred to as “Monobloc unit”). • Electrical work and water installation works must be installed or serviced by a licensed electrician and licensed water system installer respectively.
  • Page 4 18. Only use the supplied or specified installation parts, else, it may cause unit vibrate loose, water/refrigerant leakage, electrical shock or fire. 19. The unit is only for use in a closed portable water system. Utilization in an open water circuit or non-portable water circuit, may lead to excessive corrosion of the water piping and risk of incubating bacteria colonies, particularly Legionella, in water.

  • Page 5: Specifications

    2 Specifications 2.1. WH-MDC09C3E5 Item Unit Refrigerant System (EN14511) Performance Test Condition EUROVENT Cooling Capacity 7.00 BTU/h 23900 kcal/h 6020 3.11 kcal/hW 2.68 Heating Capacity 9.00 BTU/h 30700 kcal/h 7740 4.74 kcal/hW 4.07 Air Flow Cooling: 89.5 (3160) /min (ft /min) Heating: 76.8 (2710)
  • Page 6 Item Unit Monobloc Unit Running Current Cooling: 10.20 Heating: 8.70 Maximum Current For Monobloc Unit 22.9 Maximum Current For Internal Heater 13.0 (26.0) (Back-up Heater + Tank Heater) Power Factor Cooling: 96 Heating: 95 Power factor means total figure of compressor and fan motor. Power Cord Number of core Length...

  • Page 7: Wh-Mdc12C6E5

    2.2. WH-MDC12C6E5 Item Unit Refrigerant System Performance Test Condition EUROVENT Cooling Capacity 10.00 BTU/h 34100 kcal/h 8600 2.78 kcal/hW 2.39 Heating Capacity 12.00 BTU/h 41000 kcal/h 10320 4.67 kcal/hW 4.02 Air Flow Cooling: 93.3 (3290) /min (ft /min) Heating: 80.0 (2830) Refrigeration Control Device Expansion Valve Refrigeration Oil...
  • Page 8 Item Unit Monobloc Unit Maximum Current For Monobloc Unit 24.0 Maximum Current For Internal Heater 26 (39) (Back-up Heater + Tank Heater) Power Factor Cooling: 97 Heating: 96 Power factor means total figure of compressor and fan motor. Power Cord Number of core Length m (ft)

  • Page 9: Wh-Mdc14C6E5

    2.3. WH-MDC14C6E5 Item Unit Refrigerant System Performance Test Condition EUROVENT Cooling Capacity 11.50 BTU/h 39200 kcal/h 9890 2.61 kcal/hW 2.25 Heating Capacity 14.00 BTU/h 47800 kcal/h 12040 4.50 kcal/hW 3.87 Air Flow Cooling: 97.8 (3450) /min (ft /min) Heating: 84.0 (2970) Refrigeration Control Device Expansion Valve Refrigeration Oil...
  • Page 10 Item Unit Monobloc Unit Maximum Current For Monobloc Unit 25.0 Maximum Current For Internal Heater 26 (39) (Back-up Heater + Tank Heater) Power Factor Cooling: 97 Heating: 96 Power factor means total figure of compressor and fan motor. Power Cord Number of core Length m (ft)

  • Page 11: Wh-Mdc16C6E5

    2.4. WH-MDC16C6E5 Item Unit Refrigerant System Performance Test Condition EUROVENT Cooling Capacity 12.20 BTU/h 41600 kcal/h 10490 2.54 kcal/hW 2.19 Heating Capacity 16.00 BTU/h 54600 kcal/h 13760 4.23 kcal/hW 3.64 Noise Level dB-A (H/L) Cooling: 54 Heating: 53 Power Level dB Cooling: 72 Heating: 70 Air Flow...
  • Page 12 Item Unit Monobloc Unit Starting Current 21.5 Running Current Cooling: 21.5 Heating: 17.1 Maximum Current For Monobloc Unit 26.0 Maximum Current For Internal Heater 26 (39) (Back-up Heater + Tank Heater) Power Factor Cooling: 97 Heating: 96 Power factor means total figure of compressor and fan motor. Power Cord Number of core Length...

  • Page 13: Features

    3 Features • Inverter Technology - Energy saving • High Efficiency • Compact Design • Environment Protection - Non-ozone depletion substances refrigerant (R410A) • Easy to use remote control • Weekly Timer setting • Quality Improvement - Random auto restart after power failure for safety restart operation - Gas leakage protection - Prevent compressor reverse cycle - Inner protector to protect compressor...

  • Page 14: Location Of Controls And Components

    4 Location of Controls and Components 4.1. Monobloc Unit...

  • Page 15: Main Components

    4.1.1. Main Components Water Pump: The pump circulates the water in the water circuit. Pressure Gauge: The manomater allows read out of the water pressure in the water circuit. Flow Switch: The flow switch checks the flow in the water circuit and protects the heat exchanger against high pressure built-up and the pump against damage.
  • Page 16 Location of Control 4.1.2. 4.1.2.1. Remote Control The user interface allows the installer and user to setup, use and maintain the unit.
  • Page 19 4.1.2.2. Weekly Timer Setting...
  • Page 20 4.1.2.3. Setting Up The Special Functions...

  • Page 21: Dimensions

    5 Dimensions 5.1. Monobloc Unit...

  • Page 22: Refrigeration And Water Cycle Diagram

    6 Refrigeration And Water Cycle Diagram...

  • Page 24: Block Diagram

    7 Block Diagram 7.1. WH-MDC09C3E5...

  • Page 25: Wh-Mdc12C6E5 Wh-Mdc14C6E5 Wh-Mdc16C6E5

    7.2. WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5...

  • Page 26: Wiring Connection Diagram

    8 Wiring Connection Diagram 8.1. WH-MDC09C3E5...

  • Page 28: Wh-Mdc12C6E5 Wh-Mdc14C6E5 Wh-Mdc16C6E5

    8.2. WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5...

  • Page 30: Electronic Circuit Diagram

    9 Electronic Circuit Diagram 9.1. WH-MDC09C3E5...

  • Page 32: Wh-Mdc12C6E5 Wh-Mdc14C6E5 Wh-Mdc16C6E5

    9.2. WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5...

  • Page 34: Printed Circuit Board

    10 Printed Circuit Board 10.1. Water System 10.1.1. Main Printed Circuit Board...
  • Page 35 10.1.2. Solar Printed Circuit Board (Optional)

  • Page 36: Refrigerant System

    10.2. Refrigerant System 10.2.1. Main Printed Circuit Board...
  • Page 37 10.2.2. Capacitor Printed Circuit Board 10.2.3. Noise Filter Printed Circuit Board...

  • Page 38: Installation Instructionmonobloc Unit

    11 Installation Instruction Monobloc Unit Dimension Diagram...
  • Page 39 Main Components...

  • Page 40: Select The Best Location

    11.1. Select The Best Location 11.2. Mono Bloc Unit Installation • Install Mono bloc Unit at outdoor only. Mono bloc unit will become heavy when filled with water. • Avoid location where ambient temperature is below -20°C. Therefore, please install the Mono bloc unit on strong concrete •...

  • Page 41: Piping Installation

    • Make sure to use two spanners to tighten the connection. Further tighten the nuts with torque wrench in specified torque as stated in the table. Nut size (Torque) Model Water WH-MDC09C3E5 WH-MDC12C6E5 RP 1 1/4" [117.6 N•m] WH-MDC14C6E5 WH-MDC16C6E5 •...

  • Page 42: Connect The Cord And Cable To Mono Bloc Unit

    • In case of a power supply failure or pump operating failure, drain the system (as suggested in the figure below). When water is idle inside the system, freezing up is very likely to happen which could damage the system. Drainage piping installation •...
  • Page 43 6. Receiver shall be connected to “Room Thermostat”, refer to “Field Supply Accessories” table for details. Receiver’s cable must be (4 or 3 × min 0.5 mm ), double insulation layer of PVC-sheathed or polychloroprene sheathed cable. (connection refer to Diagram 4.2). 7.
  • Page 44 858kW (for WH-MDC09C3E5) at the interface point between the user’s supply and the public system. It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a supply with a short-circuit power S greater than or equal to 858kW.
  • Page 45 • This equipment’s power supply 2 shall be connected to a suitable supply network, with the following maximum permissible system impedance Z at the interface of point for models: WH-MDC12C6E5, WH-MDC14C6E5, WH-MDC16C6E5 : 0.236Ω Please liaise with supply authority to ensure that the power supply 2 is connected only to a supply of that impedance or less. •...
  • Page 46 1. Embed an outlet box (JIS C 8336) into the wall. Outlet box may be purchased separately. Medium-sized square outlet box (obtain locally) Part No. DS3744 (Panasonic Co., Ltd.) or equivalent. 2. Secure the remote controller lower case to the outlet box with the two accessory screws (3).
  • Page 47 B. IF REMOTE CONTROLLER CABLE IS EXPOSED 1. Install the remote controller lower case to the wall with the 5. Route the remote controller cable (2) inside the lower two accessory screws (4). case in accordance with the intended feeding-out 2.

  • Page 48: Operation And Control

    12 Operation and Control 12.1. Basic Function Inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintains the set temperature by measuring the temperature of the environment and performing temperature shifting.
  • Page 49 12.1.4. Cool Mode Operation 1. 3 ways valve control: • 3 ways valve switch and fix to room side. 2. Heat pump operate follow normal cooling operation. 3. Backup heater DOES NOT operate during cool mode. 4. Solar 3 way valve operates follow solar operation specification. 5.
  • Page 50 12.1.5. Cool + Tank Mode Operation 12.1.6. Tank Mode Operation Control contents: • 3 ways valve direction - 3 ways valve switch and fix to tank side. • Heat Pump Thermostat characteristic - Water set temperature = tank set temperature or [55°C] whichever lower. - Heat Pump Water Outlet set temperature is set to Maximum (55°C) at tank mode i.
  • Page 51 ii. Case 2 - Heat pump THERMO OFF TEMP: 1. Heat pump THERMO OFF TEMP = 55°C + [+2°C]. 2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 3 minutes, heat pump OFF but water pump ON. - Heat pump THERMO ON TEMP: 1.
  • Page 52 Solar Priority is Set Solar Priority is Not Set...
  • Page 53 12.1.7. Heat + Tank Mode Operation Setting 1:- When Heating priority is set by control panel: 1. 3 ways valve control: • 3 ways valve switch and fix to room side. 2. Heat pump operation control:- • Heat pump operate follow normal operation 3.
  • Page 54 Case 2: • Heat pump THERMO OFF TEMP: 1. Heat pump THERMO OFF TEMP = 55°C + [+2°C]. 2. Water outlet temperature > Heat pump THERMO OFF TEMP for continuous 90 seconds, switch 3 ways valve to room side. End Tank heat-up interval and start count heating heat-up interval. •...
  • Page 55 Heat + Tank (Heating No Priority) (Solar Priority Set)
  • Page 56 Heat + Tank (Heating No Priority) (Solar Priority Not Set)
  • Page 57 12.1.8. Setting Water Outlet Temperature For Heat Mode • The set temperature define the parameters for the outdoor ambient temperature dependent operation of the unit. Where by the internal water setting temperature is determined automatically depending on the outdoor temperature. The colder outdoor temperatures will result in warmer water and vice versa.
  • Page 58 12.1.8.1. Heating Mode Operation Time Chart Exp: 1. 3 ways valve control: • 3 ways valve switch and fix to room side. 2. Heat pump operate follow normal heating operation. 3. Backup heater operate follow normal operation. 4. Solar 3 way valve operates follow solar operation specification 5.
  • Page 59 12.1.9. Water Temperature Thermo Shift Setting • Switchs are ignored during “PUMPDW” = ON. • Switchs are ignored during “STATUS” = ON. • “ ”, “ ”, “SELECT” switch are ignored if “SETTING” = OFF. • “CANCEL” switch is ignored if “SETTING” = OFF & “STATUS” = OFF. •...

  • Page 60: Water Pump

    12.2. Water Pump 12.2.1. Water Pump Control 1. Once the Monobloc unit is ON, the water pump will be ON immediately and no error judgement for 9 minutes. However, during this 9 minutes operation, if there is any abnormality cause at Monobloc unit or malfunction, the compressor should be OFF immediately and restart delay after 3 minutes.

  • Page 61: Force Heater Mode Operation

    12.5. Force Heater Mode Operation The backup heater also serves as backup in case of malfunctioning of the Monobloc unit. 1. Make sure the OFF/ON control panel LED is OFF (no operation). 2. Press the Force button to start the force heater mode operation. 3.

  • Page 62: Indication Panel

    12.8. Indication Panel Operation Color Green Light ON Operation ON Light OFF Operation OFF Note: • If Operation LED is blinking, there is an abnormality operation occurs. 12.9. Back-Up Heater Control 12.9.1. Electric Heater control 1. Normal Heating Mode • Heater On condition: a.

  • Page 63: Tank Booster Heater Control

    12.10. Tank Booster Heater Control 12.10.1. Tank booster heater control Heating operation condition: 1. Booster heater Turn On condition: • After BOOSTER HEATER DELAY TIMER fulfil during heat pump startup time in tank mode, or during switching from heating heat-up interval to tank heat-up interval in heat+tank mode (heating priority not set). •...

  • Page 64: Quiet Operation

    12.13. Quiet Operation • Purpose: - To provide quiet operation compare to normal operation by reduces Monobloc unit noise. • Starting condition: 1. When quiet button is presses. 2. When quiet request ON time by weekly timer (Refer to remote control.) •...
  • Page 65 When solar priority is NOT SET 1. Operation condition: • Solar pump operates if all of the following conditions are fulfilled:- i) Power On. (regardless operation ON or OFF) ii) There is operation request from Solar pump station. iii) Tank hot water temp is below solar on upper limit temp [EEPROM 1 : 70]°C. iv) Heat pump thermo OFF in tank mode OR Heat pump operate to room side.
  • Page 66 (Solar Priority Not Set) Heat + Tank Mode (Heating Priority Set)
  • Page 67 Tank Mode (Solar Priority Set) (Solar Priority Not Set)

  • Page 68: External Room Thermostat Control (Optional)

    12.15. External Room Thermostat Control (Optional) Purpose: • Better room temperature control to fulfil different temperature request by external room thermostat. Recommended external room thermostat: Maker Characteristic Siemem (REV200) Touch panel Siemem (RAA200) Analog Connection external room thermostat: Wire Connection and thermo characteristic of Siemen REV200: Setting L / L1 (H) Heat Thermo...

  • Page 69: Two Ways Valve Control

    12.16. Two ways valve control Functionality of 2 ways valve: • Use to allow hot water to floor heating panel or block cold water to floor heating panel. Control contents: 1. When indoor running in heat mode, OPEN the 2 ways valve. 2.

  • Page 70: Protection Control

    13 Protection Control 13.1. Protection Control For All Operations 13.1.1. Time Delay Safety Control 1. The compressor will not start for three minutes after stop of operation. 13.1.2. 30 Seconds Forced Operation 1. Once the compressor starts operation, it will not stop its operation for 30 seconds. 2.
  • Page 71 13.1.6. Low Frequency Protection Control 1 • When the compressor continuously operates at frequency lower than 25 Hz for 240 minutes, the operation frequency will change to 24 Hz for 2 minutes. 13.1.7. Low Frequency Protection Control 2 • When all the below conditions comply, the minimum compressor frequency will change to lower frequency. Temperature, T, for: Heating Cooling...

  • Page 72: Protection Control For Heating Operation

    13.2. Protection Control For Heating Operation 13.2.1. Outdoor Air Temperature Control The maximum current value is regulated when the outdoor air temperature rises above 14°C in order to avoid compressor overloading. 13.2.2. Deice Operation When Monobloc unit (Refrigerant System) pipe temperature and outdoor air temperature is low, deice operation start where Monobloc unit fan motor stop.

  • Page 73: Servicing Mode

    14 Servicing Mode 14.1. Test Run 1. Fill up the boiler tank with water. For details refer to boiler tanks installation instruction and operation instruction. 2. Antifreeze agent must be added into water circuit to prevent freezing of water when outdoor ambient temperatures is low. Recommended antifreeze: Propylene glycol: 40% (equivalent to -20°C) 3.

  • Page 74: Maintenance Guide

    15 Maintenance Guide In order to ensure optimal performance of the unit, checks and inspections on the unit and the field wiring must be carried out regularly. Please request a licensed technician for carry out maintenance job. Before carried out any maintenance or repair work, and removing the front plate of heat exchanger unit, always switch off all power supply (i.e.
  • Page 75 6. Reset overload protector Overload Protector serves the safety purpose to prevent the water over heating. When the Overload Protector trip at high water temperature, take below steps to reset it. a. Take out OLP Cover. b. Use a test pen to push the centre button gently in order to reset the Overload protector. c.

  • Page 76: Troubleshooting Guide

    16 Troubleshooting Guide 16.1. Refrigeration Cycle System In order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a fan. The normal pressure of the refrigeration cycle depends on various conditions, the standard values for them are shown in the table on the right.

  • Page 77: Relationship Between The Condition Of The Monobloc Unit And Pressure And Electric Current

    16.2. Relationship Between The Condition Of The Monobloc Unit And Pressure And Electric Current Heating Mode Cooling Mode Condition of the Monobloc unit Low Pressure High Pressure Electric current Low Pressure High Pressure Electric current during operation during operation Water leakage or insufficient water flow rate in the system Excessive amount of...

  • Page 78: Breakdown Self Diagnosis Function

    16.3. Breakdown Self Diagnosis Function 16.3.1. Self Diagnosis Function (Three Digits Alphanumeric Code) • When abnormality occur during operation, the system will stop operation, and OFF/ON remote control LED will blink and error code will display on the remote control Timer display LCD. •...

  • Page 79: Error Codes Table

    16.4. Error Codes Table Diagnosis display Abnormality / Protection control Abnormality Judgement Primary location to verify No abnormality detected — — Indoor/Outdoor capacity unmatched 90s after power supply • Indoor/outdoor connection wire • Indoor/outdoor PCB • Specification and combination table in catalogue Outdoor compressor temperature sensor Continue for 5 sec.
  • Page 80 Diagnosis display Abnormality / Protection control Abnormality Judgement Primary location to verify PFC control 4 times occurrence within 10 • Voltage at PFC minutes Outdoor heat exchanger temperature Continue for 5 sec. • Outdoor heat exchanger temperature sensor abnormality sensor (defective or disconnected) Outdoor defrost sensor abnormality Continue for 5 sec.

  • Page 81: Self-Diagnosis Method

    16.5. Self-diagnosis Method 16.5.1. Connection Capability Rank Abnormality (H12) Malfunction Decision Conditions: During startup operation of cooling and heating, the capability rank of indoor checked by the outdoor is used to determine connection capability rank abnormality. Malfunction Caused: 1. Wrong model interconnected. 2.
  • Page 82 16.5.2. Compressor Tank Temperature Sensor Abnormality (H15) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the compressor tank temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
  • Page 83 16.5.3. Indoor Refrigerant Liquid Temperature Sensor Abnormality (H23) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor refrigerant liquid temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
  • Page 84 16.5.4. Compressor Low Pressure Protection (H42) Malfunction Decision Conditions: During operation of heating and after 5 minutes compressor ON, when outdoor pipe temperature below -29°C or above 26°C is detected by the outdoor pipe temperature sensor. Malfunction Caused: 1. Dust accumulation on the outdoor unit heat exchanger. 2.
  • Page 85 16.5.5. Water Flow Switch Abnormality (H62) Malfunction Decision Conditions: During operation of cooling and heating, the water flow detected by the indoor water flow switch is used to determine water flow error. Malfunction Caused: 1. Faulty water pump. 2. Water leak in system. 3.
  • Page 86 16.5.6. Outdoor High Pressure Abnormality (H64) Malfunction Decision Conditions: During operation of cooling and heating, when the outdoor high pressure sensor output signal is 0Vdc or 5Vdc. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 4 times in 20 minutes.
  • Page 87 16.5.7. Indoor Backup Heater OLP Abnormality (H70) Malfunction Decision Conditions: During operation of indoor backup heater, when no power supplies to indoor backup heater or OLP open circuit. Malfunction Caused: 1. Faulty power supply connector connection. 2. Faulty connector connection. 3.
  • Page 88 16.5.8. Tank Temperature Sensor Abnormality (H72) Malfunction Decision Conditions: When tank connection is set to ON, the temperatures detected by the tank temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3. Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 5 seconds.
  • Page 89 16.5.9. Indoor-Remote Control Communication Abnormality (H76) Malfunction Decision Conditions: During standby and operation of cooling and heating, indoor-remote control error occur. Malfunction Caused: 1. Faulty connector connection. 2. Faulty remote control. 3. Faulty indoor unit PCB (main).
  • Page 90 16.5.10. Indoor/Outdoor Abnormal Communication (H90) Malfunction Decision Conditions: During operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction Caused: 1. Faulty outdoor unit PCB (main). 2. Faulty indoor unit PCB (main). 3.
  • Page 91 16.5.11. Tank Booster Heater OLP Abnormality (H91) Malfunction Decision Conditions: During operation of tank booster heater, and tank booster heater OLP open circuit. Malfunction Caused: 1. Faulty connector connection. 2. Faulty tank booster heater overload protector (OLP). 3. Faulty indoor unit PCB (main). Abnormality Judgment: Continue for 60 seconds.
  • Page 92 16.5.12. Unspecified Voltage between Indoor and Outdoor (H95) Malfunction Decision Conditions: The supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction Caused: 1. Insufficient power supply. 2. Faulty outdoor unit PCB (noise filter/main).
  • Page 93 16.5.13. Outdoor High Pressure Protection (H98) Malfunction Decision Conditions: During operation of heating, when pressure 4.0MPa and above is detected by outdoor high pressure sensor. Malfunction Caused: 1. Faulty water pump. 2. Insufficient water flow rate in system. 3. Water leak in system. 4.
  • Page 94 16.5.14. Indoor Freeze-up Protection (H99) Malfunction Decision Conditions: During anti-freezing control in cooling operation, when the indoor refrigerant liquid temperature < 0°C. Malfunction Caused: 1. Faulty water pump. 2. Insufficient water flow rate in system. 3. Water leak in system. 4.
  • Page 95 16.5.15. Outdoor High Pressure Switch Activate (F12) Malfunction Decision Conditions: During operation of cooling and heating, when pressure 4.5MPa and above is detected by outdoor high pressure switch. Malfunction Caused: 1. Dust accumulation on the outdoor unit heat exchanger. 2. Air short circuit at outdoor unit. 3.
  • Page 96 16.5.16. Compressor Rotation Failure (F14) Malfunction Decision Conditions: A compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Caused: 1. Compressor terminal disconnect. 2. Faulty outdoor unit PCB (main). 3. Faulty compressor. Abnormality Judgment: Continue 4 times in 20 minutes.
  • Page 97 16.5.17. Outdoor Fan Motor (DC Motor) Mechanism Locked (F15) Malfunction Decision Conditions: The rotation speed detected by the Hall IC of the fan motor during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or < 50rpm). Malfunction Caused: 1.
  • Page 98 16.5.18. Input Over Current Detection (F16) Malfunction Decision Conditions: During operation of cooling and heating, when outdoor current above 27.9A is detected by the current transformer (CT) in the outdoor unit PCB. Malfunction Caused: 1. Excessive refrigerant. 2. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 3 times in 20 minutes.
  • Page 99 16.5.19. Compressor Overheating (F20) Malfunction Decision Conditions: During operation of cooling and heating, when temperature above 112°C is detected by the compressor tank temperature sensor. Malfunction Caused: 1. Faulty compressor tank temperature sensor. 2. 2/3 way valve closed. 3. Refrigerant shortage (refrigerant leakage). 4.
  • Page 100 16.5.20. IPM Overheating (F22) Malfunction Decision Conditions: During operation of cooling and heating, when temperature 95°C is detected by the outdoor IPM temperature sensor. Malfunction Caused: 1. Faulty outdoor unit fan motor. 2. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue 3 times in 30 minutes.
  • Page 101 16.5.21. Output Over Current Detection (F23) Malfunction Decision Conditions: During operation of cooling and heating, when outdoor DC current is above 40.1 ± 5.0A (for: UD07~09CE) OR 44.7 ± 5.0A (for: UD12~16CE) is detected by the IPM DC Peak sensing circuitry in the outdoor unit PCB (main). Malfunction Caused: 1.
  • Page 102 16.5.22. Refrigeration Cycle Abnormality (F24) Malfunction Decision Conditions: 1. During operation of cooling and heating, compressor frequency > Frated. 2. During operation of cooling and heating, running current: 0.65A < I < 1.65A. 3. During operation of cooling, water inlet temperature - indoor refrigerant liquid temperature < 5°C. 4.
  • Page 103 16.5.23. Four Way Valve Abnormality (F25) Malfunction Decision Conditions: 1. During heating operation, when the indoor pipe temperature of thermostat ON indoor unit < 0°C. 2. During cooling operation, when the indoor pipe temperature of thermostat ON indoor unit > 45°C. Malfunction Caused: 1.
  • Page 104 16.5.24. Outdoor High Pressure Switch Abnormal (F27) Malfunction Decision Conditions: During compressor stop, and outdoor high pressure switch is remain opened. Malfunction Caused: 1. Faulty connector connection. 2. Faulty switch. 3. Faulty outdoor unit PCB (main). Abnormality Judgment: Continue for 1 minute.
  • Page 105 16.5.25. Outdoor Air Temperature Sensor Abnormality (F36) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
  • Page 106 16.5.26. Indoor Water Inlet Temperature Sensor Abnormality (F37) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water inlet temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
  • Page 107 16.5.27. Outdoor Discharge Pipe Temperature Sensor Abnormality (F40) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2.
  • Page 108 16.5.28. Power Factor Correction (PFC) Abnormality (F41) Malfunction Decision Conditions: During operation of cooling and heating, when the PFC protection circuitry in the outdoor unit PCB (main) senses abnormal high DC voltage level. Malfunction Caused: 1. Power supply surge. 2. Compressor windings not uniform. 3.
  • Page 109 16.5.29. Outdoor Pipe Temperature Sensor Abnormality (F42) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
  • Page 110 16.5.30. Outdoor Defrost Temperature Sensor Abnormality (F43) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the outdoor defrost temperature sensor are used to determine sensor error. Malfunction Caused: 1. Faulty connector connection. 2. Faulty sensor. 3.
  • Page 111 16.5.31. Indoor Water Outlet Temperature Sensor Abnormality (F45) Malfunction Decision Conditions: During startup and operation of cooling and heating, the temperatures detected by the indoor water outlet temperature sensor are used to determine sensor errors. Malfunction Caused: 1. Faulty connector connection. 2.
  • Page 112 16.5.32. Outdoor Current Transformer Open Circuit (F46) Malfunction Decision Conditions: A current transformer (CT) open circuit is detected by checking the compressor running frequency ( rated frequency) and CT detected input current (< 0.65A) for continuously 20 seconds. Malfunction Caused: 1.
  • Page 113 16.5.33. Cooling High Pressure Overload Protection (F95) Malfunction Decision Conditions: During operation of cooling, when pressure 4.0MPa and above is detected by outdoor high pressure sensor. Malfunction Caused: 1. Dust accumulation in the outdoor unit heat exchanger. 2. Air short circuit at outdoor unit. 3.

  • Page 114: Disassembly And Assembly Instructions

    17 Disassembly and Assembly Instructions WARNING High Voltage are generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. WARNING Be sure to switch off all the power supply before performing each of the below action.

  • Page 115: To Remove The Cabinet Rear Plate

    17.3. To Remove The Cabinet Rear Plate 17.4. To Remove Pressure Gauge 17.5. To Remove RCCB...

  • Page 116: To Remove Transformer And Electronic Controller Board

    17.6. To Remove Transformer and Electronic Controller Board 17.7. To Remove Pressure Relief Valve When reinstall the water pipe, use grease or water at the joining.

  • Page 117: To Remove Flow Switch

    17.8. To Remove Flow Switch When reinstall the water pipe, use grease or water at the joining. 17.9. To Remove Water Pump When reinstall the water pipe, use grease or water at the joining.

  • Page 118: To Remove Bottle Complete

    17.10. To Remove Bottle Complete When reinstall the water pipe, use grease or water at the joining.

  • Page 119: Technical Data

    18 Technical Data 18.1. Operation Characteristics 18.1.1. WH-MDC09C3E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C...
  • Page 120 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C...
  • Page 121 18.1.2. WH-MDC12C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C...
  • Page 122 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C...
  • Page 123 18.1.3. WH-MDC14C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C...
  • Page 124 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C...
  • Page 125 18.1.4. WH-MDC16C6E5 Heating Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 7°C (DBT), 6°C (WBT) Indoor water inlet temperature : 30°C Indoor water outlet temperature : 35°C...
  • Page 126 Cooling Characteristics at Different Outdoor Air Temperature Condition Outdoor air temperature : 35°C (DBT), -°C (WBT) Indoor water inlet temperature : 12°C Indoor water outlet temperature : 7°C...

  • Page 127: Heating Capacity Table

    18.2. Heating Capacity Table 18.2.1. WH-MDC09C3E5 Tamb 8.65 3.10 8.30 3.25 7.95 3.45 7.60 3.65 7.15 3.75 6.70 3.85 9.35 2.95 9.00 3.20 8.85 3.50 8.70 3.80 8.30 3.85 7.90 3.90 9.31 2.39 9.00 2.55 9.00 2.82 9.00 3.09 8.90 3.53...

  • Page 128: Cooling Capacity Table

    18.2.4. WH-MDC16C6E5 Tamb 10.60 4.13 10.30 4.42 10.00 4.71 9.70 5.00 8.80 4.98 7.90 4.95 11.90 4.07 11.40 4.30 10.80 4.50 10.30 4.70 9.60 4.85 9.00 4.99 13.50 3.78 13.00 4.00 12.40 4.22 11.90 4.44 10.80 4.50 9.80 4.55 16.00 3.25 16.00 3.78...

  • Page 129: Exploded View And Replacement Parts List

    19 Exploded View and Replacement Parts List 19.1. WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 (Refrigerant System)
  • Page 131 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 132 <Model: Refrigerant System> REF. DESCRIPTION & NAME QTY. WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 REMARKS ← ← ← BASE PAN ASS’Y CWD52K1251 ← ← ← COMPRESSOR 5JD420XAA22 ← ← ← ANTI-VIBRATION BUSHING CWH50055 ← ← ← NUT FOR COMP. MOUNT. CWH561049 ←...
  • Page 133 REF. DESCRIPTION & NAME QTY. WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 REMARKS ← ← ← ELECTRO MAGNETIC SWITCH K6C1AYY00003 ← ← ← RECEIVER CWB141055 ← ← ← ACCESSORY CO. CWG87C2030 (DRAIN ELBOW) (Note) • All parts are supplied from PHAAM, Malaysia (Vendor Code: 00029488).

  • Page 134: Wh-Mdc09C3E5 Wh-Mdc12C6E5 Wh-Mdc14C6E5 Wh-Mdc16C6E5 (Water System)

    19.2. WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 (Water System)
  • Page 135 Note: The above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts.
  • Page 136 <Model: Water System> REF. DESCRIPTION & NAME QTY. WH-MDC09C3E5 WH-MDC12C6E5 WH-MDC14C6E5 WH-MDC16C6E5 REMARKS ← ← ← BASE PAN CWD52K1242 ← ← ← HOT WATER COIL-COMPLETE CWB90C1046 ← ← ← RECEIVER CWB141039 ← ← ← FLOAT (FLOW SWITCH) CWB601008 ← ←...

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