Mitsubishi Electric PUMY-P100VHMB Service Manual
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Mitsubishi Electric PUMY-P100VHMB Service Manual

Split-type, heat pump air conditioners
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
[Model name]
[Service Ref.]
<Outdoor unit>
PUMY-P100VHMB
PUMY-P125VHMB
PUMY-P140VHMB
PUMY-P100VHMB-BS
PUMY-P125VHMB-BS
PUMY-P140VHMB-BS
PUMY-P100YHMB
PUMY-P125YHMB
PUMY-P140YHMB
PUMY-P100YHMB-BS
PUMY-P125YHMB-BS
PUMY-P140YHMB-BS
Revision :
· PUMY-P100, 125, 140V/YHMBR2(-BS) are added in REVISED EDITION-B.
· Some descriptions have been modified.
· Please void OCH446 REVISED EDITION-A.
NOTE :
· This service manual describes technical data of outdoor unit. As for indoor units, refer to its service manual.
· RoHS compliant products have <G> mark on spec name plate.
· For servicing of RoHS compliant products, refer to RoHS PARTS LIST.
Model name
indication
OUTDOOR UNIT
PUMY-P100VHMBR1
PUMY-P125VHMBR1
PUMY-P140VHMBR1
PUMY-P100VHMBR1-BS
PUMY-P125VHMBR1-BS
PUMY-P140VHMBR1-BS
PUMY-P100YHMBR1
PUMY-P125YHMBR1
PUMY-P140YHMBR1
PUMY-P100YHMBR1-BS
PUMY-P125YHMBR1-BS
PUMY-P140YHMBR1-BS
CONTENTS
1. TECHNICAL CHANGE ...................................... 2
2. SAFETY PRECAUTION .................................... 3
3. OVERVIEW OF UNITS ...................................... 6
4. SPECIFICATIONS ............................................. 8
5. DATA ................................................................ 10
6. OUTLINES AND DIMENSIONS ...................... 26
7. WIRING DIAGRAM ......................................... 27
9. TROUBLESHOOTING .................................... 39
10. ELECTRICAL WIRING .................................... 84
11. REFRIGERANT PIPING TASKS ..................... 87
12. DISASSEMBLY PROCEDURE ....................... 91
PARTS CATALOG (OCB446)
September 2010
No. OCH446
REVISED EDITION-B
HFC
utilized
R410A
PUMY-P100VHMBR2
PUMY-P125VHMBR2
PUMY-P140VHMBR2
PUMY-P100VHMBR2-BS
PUMY-P125VHMBR2-BS
PUMY-P140VHMBR2-BS
PUMY-P100YHMBR2
PUMY-P125YHMBR2
PUMY-P140YHMBR2

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Summary of Contents for Mitsubishi Electric PUMY-P100VHMB

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS September 2010 No. OCH446 REVISED EDITION-B utilized R410A TECHNICAL & SERVICE MANUAL [Model name] [Service Ref.] <Outdoor unit> PUMY-P100VHMB PUMY-P100VHMBR1 PUMY-P100VHMBR2 PUMY-P100VHMB PUMY-P125VHMB PUMY-P125VHMBR1 PUMY-P125VHMBR2 PUMY-P125VHMB PUMY-P140VHMB PUMY-P140VHMBR1 PUMY-P140VHMBR2 PUMY-P140VHMB PUMY-P100VHMB-BS PUMY-P100VHMBR1-BS PUMY-P100VHMBR2-BS PUMY-P100VHMB-BS PUMY-P125VHMB-BS...

  • Page 2: Pumy-P100Vhmb

    PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) • THERMISTOR has been changed. (Discharge thermistor → Compressor thermistor) • COMPRESSOR has been changed. PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) • OUTDOOR CONTROLLER BOARD (C.B) has been changed.

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 2-1. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. Avoid using thin pipes. If other refrigerant (R22 etc.) is used, chlorine in refrige- rant can cause deterioration of refrigerant oil etc. Use a vacuum pump with a reverse flow check Make sure that the inside and outside of refrige- valve.
  • Page 4 [1] Cautions for service (1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.
  • Page 5 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 6: Overview Of Units

    OVERVIEW OF UNITS 3-1. UNIT CONSTRUCTION PUMY-P100VHMB(-BS) PUMY-P125VHMB(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMBR2(-BS) Outdoor unit PUMY-P100YHMB(-BS) PUMY-P125YHMB(-BS) PUMY-P140YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMBR1(-BS) PUMY-P140YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMBR2(-BS) Indoor Capacity Type 15 ~ Type 125 Type 15 ~ Type 140 unit that...

  • Page 7: Unit Specifications

    3-2. UNIT SPECIFICATIONS (1) Outdoor Unit PUMY-P100VHMB(-BS) PUMY-P125VHMB(-BS) PUMY-P140VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMBR1(-BS) PUMY-P140VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMBR2(-BS) Service Ref. PUMY-P100YHMB(-BS) PUMY-P125YHMB(-BS) PUMY-P140YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMBR1(-BS) PUMY-P140YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMBR2(-BS) Cooling (kW) 11.2 14.0 15.5 Capacity Heating (kW) 12.5 16.0 18.0 Compressor (kW) Cooling/Heating capacity indicates the maximum value at operation under the following condition.

  • Page 8: Specifications

    Salt-resistant cross fin & copper tube Heat exchanger Inverter scroll hermetic comp. Compressor Inverter scroll hermetic comp. Inverter scroll hermetic comp. Type MITSUBISHI ELECTRIC CORPORATION Manufacturer Inverter Starting method Motor output Case heater FV50S × 2.3 L FV50S × 2.3 L FV50S ×...
  • Page 9 Salt-resistant cross fin & copper tube Salt-resistant cross fin & copper tube Heat exchanger Inverter scroll hermetic comp. Inverter scroll hermetic comp. Inverter scroll hermetic comp. Compressor Type MITSUBISHI ELECTRIC CORPORATION Manufacturer Inverter Starting method Motor output Case heater Lubricant FV50S × 2.3 L FV50S ×...

  • Page 10: Data

    DATA 5-1. COOLING AND HEATING CAPACITY AND CHARACTERISTICS 5-1-1. Method for obtaining system cooling and heating capacity: To obtain the system cooling and heating capacity and the electrical characteristics of the outdoor unit, first add up the ratings of all the indoor units connected to the outdoor unit (see table below), and then use this total to find the standard capacity with the help of the tables on 5-2.
  • Page 11 5-2. STANDARD CAPACITY DIAGRAM 5-2-1. PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity ( kW ) Power Consumption ( kW )
  • Page 12 Capacity ( kW ) Power Consumption ( kW ) Current ( A ) /220V Current ( A ) /230V Current ( A ) /240V Total capacity of Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating indoor units* 11.10 12.38 3.27 3.62...
  • Page 13 5-2-2. PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity(kW) Power Consumption(kW) Current(A)/ 220V Current(A)/ 230V Current(A)/ 240V Total capacity of Cooling Heating Cooling...
  • Page 14 Capacity(kW) Power Consumption(kW) Current(A)/ 220V Current(A)/ 230V Current(A)/ 240V Total capacity of Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating indoor units* 3.92 3.98 18.1 18.4 17.3 17.6 16.6 16.9 13.10 14.88 3.96 4.02 18.3 18.6 17.5 17.8 16.8 17.0 13.20...
  • Page 15 5-2-3. PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity ( kW ) Power Consumption ( kW ) Current ( A ) /220V Current ( A ) /230V Current ( A ) /240V Total capacity of...
  • Page 16 Capacity ( kW ) Power Consumption ( kW ) Current ( A ) /220V Current ( A ) /230V Current ( A ) /240V Total capacity of Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating indoor units* 14.60 16.80 4.92 5.23...
  • Page 17 5-2-4. PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V Total capacity of indoor units * Cooling Heating Cooling...
  • Page 18 Total capacity of Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V indoor units * Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating 11.38 12.61 3.34 3.53 5.35 5.66 5.08 5.37 4.90 5.18 11.40 12.62 3.34 3.52 5.35 5.64 5.08 5.36 4.90 5.17 11.42...
  • Page 19 5-2-5. PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V Total capacity of indoor units * Cooling Heating Cooling...
  • Page 20 Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V Total capacity of indoor units * Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating 13.10 14.88 3.87 3.95 6.19 6.33 5.88 6.01 5.68 5.80 13.20 15.00 3.91 3.99 6.26 6.39 5.95 6.07 5.74 5.85 13.30...
  • Page 21 5-2-6. PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) * Before calculating the sum of total capacity of indoor units, please convert the value into the kW model capacity following the formula on 5-1-1. Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V Total capacity of indoor units * Cooling Heating Cooling...
  • Page 22 Capacity(kW) Power Consumption(kW) Current(A)/380V Current(A)/400V Current(A)/415V Total capacity of indoor units * Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating 14.40 16.53 4.80 4.91 7.68 7.86 7.31 7.47 7.04 7.20 14.50 16.66 4.85 4.95 7.76 7.92 7.38 7.53 7.11 7.26 14.60...

  • Page 23: Correcting Cooling And Heating Capacity

    Individual capacity under stated conditions = total capacity under the stated conditions o total capacity at the rated time (3) Capacity correction factor curve Figure 1. Figure 2. PUMY-P100VHMB(-BS) PUMY-P100YHMB(-BS) PUMY-P100VHMB(-BS) PUMY-P100YHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100YHMBR1(-BS)
  • Page 24 5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping (1) During cooling, obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, and find the capacity ratio corresponding to the standard piping length from Figure 3. Then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.

  • Page 25: Noise Criterion Curves

    5-4. NOISE CRITERION CURVES PUMY-P125VHMB(-BS) PUMY-P100VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMBR2(-BS) SPL(dB) PUMY-P100VHMBR2(-BS) MODE SPL(dB) LINE MODE LINE COOLING COOLING PUMY-P125YHMB(-BS) PUMY-P100YHMB(-BS) HEATING HEATING PUMY-P125YHMBR1(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P100YHMBR2(-BS) NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF...

  • Page 26: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUMY-P100/125/140VHMB(-BS) Unit : mm PUMY-P100/125/140VHMBR1(-BS) PUMY-P100/125/140VHMBR2(-BS) PUMY-P100/125/140YHMB(-BS) PUMY-P100/125/140YHMBR1(-BS) PUMY-P100/125/140YHMBR2(-BS)

  • Page 27: Wiring Diagram

    WIRING DIAGRAM PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) TH7 TH6 TH3 TH4 63HS SYMBOL NAME Terminal Block <Power Supply> MULTI. B. is the switch position. t° t° t° t° Terminal Block <Communication Line> CNF1 CN3D CN3S CN3N...
  • Page 28 PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) SYMBOL NAME TH7 TH6 TH3 TH4 63HS Terminal Block <Power Supply> C. B. Terminal Block <Communication Line> is the switch position. t ° t ° t ° t ° Terminal Block <Centralized Control Line> CNF1 CN3D CN3S...

  • Page 29: Necessary Conditions For System Construction

    NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 8-1. TRANSMISSION SYSTEM SETUP...
  • Page 30 8-2. REFRIGERANT SYSTEM DIAGRAM PUMY-P100VHMB(-BS) PUMY-P125VHMB(-BS) PUMY-P140VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMBR1(-BS) PUMY-P140VHMBR1(-BS) PUMY-P100YHMB(-BS) PUMY-P125YHMB(-BS) PUMY-P140YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMBR1(-BS) PUMY-P140YHMBR1(-BS) Unit: mm <inch> Pressure sensor Service (63HS) Thermistor (TH7) port High pressure Ball valve (Outdoor temperature) switch (63H) 4-way valve Refrigerant Gas pipe Solenoid <5/8>...

  • Page 31: System Control

    8-3. SYSTEM CONTROL 8-3-1. Example for the System • Example for wiring control cables, wiring method and address setting, permissible lengths, and the prohibited items are listed in the standard system with detailed explanation. The explanation for the system in this section : Use 1 single outdoor unit and multiple outdoor units for M-NET remote control system.
  • Page 32 • Name, Symbol and the Maximum Remote controller Units for Connection Name Symbol Maximum units for connection Outdoor unit — Indoor unit 1 OC unit can be connected to 1~8 (P100)/1~10 (P125)/1~12 (P140) IC units M-NET remote Maximum 2 RC for 1 indoor unit, Maximum 12 RC for 1 OC controller Permissible Lengths Prohibited items...
  • Page 33 B. Example of a group operation system with 2 or more outdoor units and a M-NET remote controller. (Address settings are necessary.) (51) (01) (02) (05) (06) M1M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S M1 M2 S (101) (105)
  • Page 34 • Name, Symbol, and the Maximum Units for Connection [ 500 meters (1.25mm²) • Longest length via outdoor units : L [ 200 meters (1.25mm²) • Longest transmission cable length : L [ 10 meters (0.5 to 1.25mm²) • Remote controller cable length : R If the length exceeds 10 meters, use a 1.25 mm²...
  • Page 35 C. Example of a MA remote controller system (address setting is not necessary.) NOTE : In the case of same group operation, need to set the address that is only main indoor unit. Example of wiring control cables Wiring Method and Address Setting 1.
  • Page 36 Permissible Lengths Prohibited items The MA remote controller and the Longest transmission cable length [ 200m (1.25 mm²) M-NET remote controller cannot be used together with the indoor unit MA remote controller cable length [ 200m (0.3 ~ 1.25 mm²) of the same group.
  • Page 37 D. Example of a group operation with 2 or more outdoor units and a MA remote controller. (Address settings are necessary.) (51) (01) (02) (05) (06) TB15 TB15 TB15 TB15 M1M2 S M1 M2 M1 M2 S M1 M2 S M1 M2 S M1 M2 S (53)
  • Page 38 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L and L 500 m (1.25 or more) Longest transmission cable length (M-NET cable): L and L and L and L and L 200 m (1.25 or more) Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4 200 m (0.3 to 1.25...

  • Page 39: Troubleshooting

    TROUBLESHOOTING 9-1. CHECK POINTS FOR TEST RUN 9-1-1. Procedures of test run (1) Before a test run, make sure that the following work is completed. • Installation related : Make sure that the panel of cassette type and electrical wiring are done. Otherwise electrical functions like auto vane will not operate normally.
  • Page 40 9-1-2. Special Function Operation and Settings (for M-NET Remote Controller) • It is necessary to perform “group settings” and “paired settings” at making group settings of different refrigerant systems (multiple outdoor unit). (A) Group settings: Enter the indoor unit controlled by the remote controller, check the content of entries, and clear entries, etc.
  • Page 41 (2) Address check: Refer to section (1) regarding address entry. a) In making group settings: • Turn off the remote controller: Press the remote controller's ON/OFF button to stop operation (the indicator light will go off). • Locate the indoor unit address display mode: Press the FILTER and k buttons on the remote controller simultaneously and hold for 2 seconds.
  • Page 42 9-1-3. Countermeasures for Error During Test Run • If a problems occurs during test run, a code number will appear in the temperature display area on the remote controller (or LED on the outdoor unit), and the air conditioning system will automatically cease operating. Determine the nature of the abnormality and apply corrective measures.
  • Page 43 Display Abnormal point and detecting method Check points Causes Over-heated compressor operation Check intake super heat. High discharge/compressor temperature 1102 Abnormal if discharge/compressor temperature caused by shortage of refrigerant Check leakage of refrigerant. thermistor (TH4) exceeds 125 or 110 Defective operation of stop valve Charge additional refrigerant.
  • Page 44 Display Abnormal point and detecting method Check points Causes Gas leakage, Gas shortage Check the refrigerant amount. 1501 Refrigerant shortage When the conditions of below detecting When heating operation, refrigerant Check the operation condition and mode are satisfied during the shortage feeling operation (When refrigerant amount.
  • Page 45 Display Abnormal point and detecting method Check points Causes 2502 Malfunction of drain pump Check if drain pump works. Drain pump (DP) (Drain Defective drain Check drain function. Let drain sensor self-heated, and if sensor temperature rises slightly, as suspensive Clogged drain pump model) abnormality operation stops and changes to...
  • Page 46 Display Abnormal point and detecting method Causes Check points 2502 Drain pump (DP) Check if drain pump works. Malfunction of drain pump Judge whether the sensor is in the water or (Float Check drain function. Defective drain in the air by turning the float switch switch Clogged drain pump ON/OFF.
  • Page 47 Display Abnormal point and detecting method Check points Causes Decrease of power supply voltage Check the facility of power supply. Overvoltage or voltage shortage 4220 Abnormal if any of followings are detected Disconnection of compressor wiring Correct the wiring (U·V·W phase) to during compressor operation: compressor.
  • Page 48 Display Abnormal point and detecting method Check points Causes 5101 Room temperature thermistor (TH21) Check whether the connector (CN20) Connector (CN20) contact failure When controller detects short (high in the indoor controller board is temp.)/open (low temp.) in thermistor connected or not. during the operation, the operation stops Check whether the thermistor wiring and the operation changes to protect...
  • Page 49 Display Abnormal point and detecting method Check points Causes 5102 Liquid pipe temperature thermistor (TH22) When the thermistor detects short/open 1) Connector (CN21) contact failure Check whether the connector (CN21) during the operation, the operation stops in the indoor controller board is and the operation changes to protect mode connected or not.
  • Page 50 Display Abnormal point and detecting method Check points Causes 5103 Gas pipe temperature thermistor (TH23) When the thermistor detects short/open 1) Connector (CN29) contact failure Check whether the connector (CN29) after 3 minutes-continuous thermo ON in the indoor controller board is during cooling or dry operation, the connected or not.
  • Page 51 Display Abnormal point and detecting method Check points Causes 5106 Outdoor temperature thermistor (TH7) 1) Connector (TH7) contact failure Check whether the connector (TH7) in the multi controller board is connected When controller detects short/open in or not. thermistor during the operation, the outdoor unit stops once and restarts operation in 3 minutes.
  • Page 52 Display Causes Abnormal point and detecting method Check points 5201 Pressure sensor (63HS) When detected pressure in high-pressure 1) High-pressure sensor failure Check the high-pressure sensor. sensor is 1 MPa or less during the operation, the compressor stops and restarts operation in 3 minutes. When the detected pressure is 1 MPa or 2) Internal pressure decrease by gas Check the internal pressure.
  • Page 53 Display Causes Abnormal point and detecting method Check points Transmission bus busy error 6603 1) The transmission processor cannot Check whether the transmission line of Over error by collision be transmitted since a short cycle the indoor unit, fresh master, lossnay Abnormality when the state, which cannot voltage of the noise etc.
  • Page 54 Display Abnormal point and detecting method Check points Causes 6607 Factor that does not relate to origin No ACK (Acknowledgement) Abnormality which controller of the 1) Since the address switch was Turn off power supply of outdoor unit, sending side detects when there is no changed with the current passed, indoor unit, fresh master and lossnay answer (ACK) from other side though data...
  • Page 55 From the previous page. Display Abnormal point and detecting method Check points Causes 3) When the cause of displayed address 1) When operating with multi 6607 and attribute is on the remote controller refrigerant system indoor units, the side indoor units transmits the signal to the remote controller after the other (The indoor unit detects when there is no refrigerant system outdoor unit is...
  • Page 56 From the previous page. Display Abnormal point and detecting method Check points Causes 6607 2) When synchronized operating with other refrigerant system lossnay, the indoor units transmits the signal to the lossnay after the lossnay and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes, and detects abnormality...
  • Page 57 Display Abnormal point and detecting method Check points Causes 6831 Defect of the transmission and reception Signal reception (Remote controller) 6834 Following symptoms are regarded as circuit of the remote controller. Check the remote controller. abnormality. According to the results, perform the Defect of the transmission and following disposals.
  • Page 58 Display Abnormal point and detecting method Check points Causes 7101 Capacity code error When the connected indoor unit models The indoor unit models is not possible Check the model code registration cannot be connected, <7101> is displayed. to connect. switch (indoor controller board SW2) in the connected indoor unit.

  • Page 59: Remote Controller Diagnosis

    9-2. REMOTE CONTROLLER DIAGNOSIS · MA remote controller is equipped with the diagnosis function If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below. First, check that the power-on indicator is lit. If the correct voltage (DC12 V) is not supplied to the remote controller, the indicator will not light.
  • Page 60 9-3. REMOTE CONTROLLER TROUBLE 1Hr. CENTRALLY CONTROLLED ON OFF °C CHECK CLOCK FILTER CHECK MODE °C TEST RUN STAND BY ERROR CODE “ ” Indicator: appears when current is carried. NOT AVAILABLE FUNCTION DEFROST TEMP. ON/OFF FILTER CHECK TEST TIMER SET (M-NET Remote controller) (1) For M-NET remote controller systems Symptom or inspection code...
  • Page 61 9-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY) Symptom Display of remote controller CAUSE Even the cooling (heating) "Cooling (Heating)" blinks The indoor unit can not cool (Heat) if other indoor units are heating operation selection button (Cooling). is pressed, the indoor unit cannot be operated.
  • Page 62 9-5. INTERNAL SWITCH FUNCTION TABLE PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) ■ The black square ( ) indicates a switch position. Operation in Each Switch Setting Switch Step...
  • Page 63 ■ The black square ( ) indicates a switch position. Operation in Each Switch Setting Switch Step Function Remarks When to Set — — — — <Initial settings> Switch of current limitation reading Before turning the Normal Enable in a different way power on.
  • Page 64 9-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR State (CN51) Distant control board Lamp power supply Relay circuit Procure locally External output adapter (PAC-SA88HA-E) Max. 10m CN51 Outdoor unit control board : Error display lamp : Compressor operation lamp X, Y: Relay (Coil standard of 0.9W or less for DC 12V) X, Y: Relay (DC1mA) Auto change over (CN3N) Remote control panel...
  • Page 65 9-7. HOW TO CHECK THE PARTS PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance with a tester.
  • Page 66 Check method of DC fan motor (fan motor/outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. board and fan motor.) (It causes trouble of the outdoor controller circuit Self check...
  • Page 67 9-8. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Low pressure saturated temperature> (TH6) • Thermistor <Outdoor> (TH7) Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% =15exp{3480( –...
  • Page 68 9-9. TEST POINT DIAGRAM Outdoor multi controller board PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) <CAUTION> TEST POINT 1 is high voltage. CN51 CN102 External signal Connect to the M-P.B...
  • Page 69 Outdoor power circuit board Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. PUMY-P100VHMB(-BS) Measure the resistance in the following points (connectors, etc.). PUMY-P125VHMB(-BS) If they are short-circuited, it means that they are broken.
  • Page 70 Outdoor power circuit board Brief check of POWER MODULE W Usually, each point is in a state of being short-circuited if they are broken. PUMY-P100YHMB(-BS) Measure the resistance in the following points (connectors, etc.). PUMY-P125YHMB(-BS) If they are short-circuited, it means that they are broken. 1.
  • Page 71 Outdoor converter circuit board PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) L1-A1 L1-IN, N-IN CK-OU Connect to the ACL1 Connect to the noise filter Connect to the CK capacitor circuit board (LO1, No) Connect to the outdoor power circuit board (CN7) L1-A2, L2-A2, L3-A2...
  • Page 72 Transmission power board PUMY-P100VHMB(-BS) PUMY-P125VHMB(-BS) PUMY-P140VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P125VHMBR1(-BS) PUMY-P140VHMBR1(-BS) PUMY-P100VHMBR2(-BS) Connect to the outdoor multi controller board PUMY-P125VHMBR2(-BS) 1-2: 24–30V DC PUMY-P140VHMBR2(-BS) 3-4: 24–30V DC PUMY-P100YHMB(-BS) PUMY-P125YHMB(-BS) PUMY-P140YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P125YHMBR1(-BS) PUMY-P140YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMBR2(-BS) Connect to the outdoor noise filter circuit board...
  • Page 73 Outdoor noise filter circuit board PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) 52C driving signal (Connect to the outdoor controller circuit board(CNLVB)) LO, NO Voltage of 220-240V AC is out- CNAC2 put (Connect to the 220-240V AC outdoor power...
  • Page 74 Outdoor noise filter circuit board PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) LI1, LI2, LI3, NI POWER SUPPLY CNAC1 LI1-LI2/LI2-LI3/LI3-LI1 : AC380/400/415V input AC220/230/240V LI1-NI/LI2-NI/LI3-NI : AC220/230/240V input (Connect to the outdoor transmission power (Connect to the terminal block (TB1)) board(CN1)) Connect to the earth CNAC2...
  • Page 75 Active filter module PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) Connect to the L1, L2 outdoor power circuit board Connect to the DCL (Reactor) (TABP2) Non-connect Lower Upper side side Connect to the outdoor power Non-connect circuit board (TABP1) –...
  • Page 76 SW:setting 0..OFF 9-10. OUTDOOR UNIT FUNCTIONS 1..ON...

  • Page 84: Electrical Wiring

    ELECTRICAL WIRING This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, together with notes concerning power wiring, wiring for control (transmission wires and remote controller wires), and the frequency converter. 10-1. OVERVIEW OF POWER WIRING Use a separate power supply for the outdoor unit and indoor unit. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water,etc.) when proceeding with the wiring and connections.
  • Page 85 10-3. DESIGN FOR CONTROL WIRING Please note that the types and numbers of control wires needed by the CITY MULTI-S series will depend on the remote controllers and whether they are linked with the system. 10-3-1. Selection number of control wires M-NET remote controller Remote controller used in system control operations.
  • Page 86 10-6. METHOD FOR OBTAINING ELECTRICAL CHARACTERISTICS WHEN A CAPACITY AGREEMENT IS TO BE SIGNED WITH AN ELECTRIC POWER COMPANY The electrical characteristics of connected indoor unit system for air conditioning systems, including the MULTI-S series, will depend on the arrangement of the indoor and outdoor units. First read the data on the selected indoor and outdoor units and then use the following formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company.

  • Page 87: Refrigerant Piping Tasks

    REFRIGERANT PIPING TASKS 11-1. REFRIGERANT PIPING SYSTEM Line-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+B+C+a+b+c+d 120m Permissible Farthest Piping Length A+B+C+d Length Farthest Piping Length After First Branch B+C+d High/Low Difference in Indoor/Outdoor Section 50 meters or less (If the outdoor unit is lower, 20 meters or less) Permissible High/...
  • Page 88 Header-Branch Method Connection Examples (Connecting to 4 Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+a+b+c+d 120m Permissible Farthest Piping Length Length Farthest Piping Length After First Branch d is 30 meters or less High/Low Difference in Indoor/Outdoor Section 50 meters or less (If the outdoor unit is lower, 20 meters or less) Permissible High/ Low Difference...
  • Page 89 Note: Pipe re-branching after the header branching is not possible. Method of Combined Branching of Lines and Headers Connection Examples (Connecting to 5 Indoor Units) Outdoor unit First branching (branching joint) Branching joint Indoor unit Branching header Blind caps Total Piping Length A+B+C+a+b+c+d+e is 120 meters or less Permissible Farthest Piping Length...

  • Page 90: Precautions Against Refrigerant Leakage

    11-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE 11-2-1. Introduction (2) Calculate room volumes (m ) and find the room with the smallest volume R410A refrigerant of this air conditioner is non-toxic and non- flammable but leaking of large amount from an indoor unit The part with represents the room with the smallest into the room where the unit is installed may be deleterious.

  • Page 91: Disassembly Procedure

    DISASSEMBLY PROCEDURE OUTDOOR UNIT: PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS) PUMY-P100VHMBR2(-BS) PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS) PUMY-P125VHMBR2(-BS) PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS) PUMY-P140VHMBR2(-BS) OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Top panel fixing screws Top panel Figure 1 (1) Remove 3 service panel fixing screws (5 × 12) and slide the hook on the right downward to remove the service panel.
  • Page 92 From the previous page. OPERATING PROCEDURE PHOTOS & ILLUSTRATION (6) Remove electrical parts box fixing screw (4 × 10) and Photo 4 Electrical parts box detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right.
  • Page 93 PHOTOS OPERATING PROCEDURE 6. Removing the thermistor <Outdoor pipe> (TH3) and ther- mistor <Discharge/Compressor> (TH4) Thermistor Photo 7 <Outdoor pipe> (1) Remove the service panel. (See Figure 1) (TH3) (2) Disconnect the connectors, TH3 (white) and TH4 (white), on the Multi controller board in the electrical parts box. (3) Loosen the clamp for the lead wire in the rear of the electri- cal parts box.
  • Page 94 OPERATING PROCEDURE PHOTOS 9. Removing bypass valve coil (SV1) and bypass valve Photo 9 (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 3 right side panel fixing screws (5 × 12) in the rear of the unit and remove the right side panel.
  • Page 95 OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) Photo 11 (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and remove the front cover panel. (See Photo 3) (4) Remove 2 back cover panel fixing screws (5 ×...

  • Page 96: Pumy-P100Yhmbr2-Bs

    OUTDOOR UNIT: PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS) PUMY-P100YHMBR2(-BS) PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS) PUMY-P125YHMBR2(-BS) PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS) PUMY-P140YHMBR2(-BS) OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Top panel fixing screws Top panel Figure 1 (1) Remove 3 service panel fixing screws (5 × 12) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 97 From the previous page. PHOTOS & ILLUSTRATION OPERATING PROCEDURE (6) Remove electrical parts box fixing screw (4 × 10) and Photo 4 detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and Electrical 1 hook on the right.
  • Page 98 PHOTOS OPERATING PROCEDURE Photo 7 6. Removing the thermistor <Outdoor pipe> (TH3) and ther- Thermistor <Outdoor pipe> mistor <Discharge/Compressor> (TH4) (TH3) (1) Remove the service panel. (See Figure 1) (2) Disconnect the connectors, TH3 (white) and TH4 (white), on the Multi controller board in the electrical parts box. (3) Loosen the clamp for the lead wire in the rear of the electri- cal parts box.
  • Page 99 OPERATING PROCEDURE PHOTOS 9. Removing bypass valve coil (SV1) and bypass valve Photo 9 (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 3 right side panel fixing screws (5 × 12) in the rear of the unit and remove the right side panel.
  • Page 100 OPERATING PROCEDURE PHOTOS 12. Removing the reactors (ACL1, ACL2, ACL3) Photo 11 Electrical parts box (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the 6 screws, screw 8 and 9 (5 × 12), that fix the front panel and remove the front panel.
  • Page 101 OPERATING PROCEDURE PHOTOS Photo 14 13. Removing the compressor (MC) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and remove the front cover panel. (See Photo 3.) (4) Remove 2 back cover panel fixing screws (5 ×...
  • Page 102 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2008 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Sep. 2010 No.OCH446 REVISED EDITION-B PDF 5 Distributed in Aug. 2009 No.OCH446 REVISED EDITION-A PDF 7 Distributed in Nov. 2008 No.OCH446 PDF 7 New publication, effective Sep.

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