Mitsubishi PUMY-P100VHM Technical & Service Manual
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Mitsubishi PUMY-P100VHM Technical & Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
[Model name]
<Outdoor unit>
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
PUMY-P100VHMA-BS
PUMY-P125VHMA-BS
PUMY-P140VHMA-BS
OUTDOOR UNIT
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 the spec name plate.
· For servicing of RoHS compliant products, refer to the RoHS PARTS LIST.
[Service Ref.]
PUMY-P100VHM
PUMY-P125VHM
PUMY-P140VHM
PUMY-P100VHMA
PUMY-P125VHMA
PUMY-P140VHMA
PUMY-P100VHMA-BS
PUMY-P125VHMA-BS
PUMY-P140VHMA-BS
CONTENTS
10. ELECTRICAL WIRING .................................... 75
11. REFRIGERANT PIPING TASKS ..................... 78
12. DISASSEMBLY PROCEDURE ....................... 82
13. PARTS LIST ..................................................... 87
14. RoHS PARTS LIST .......................................... 90
15. OPTIONAL PARTS .......................................... 95
Model name
indication
1. TECHNICAL CHANGES ................................... 2
2. SAFETY PRECAUTION .................................... 2
3. OVERVIEW OF UNITS ...................................... 5
4. SPECIFICATIONS ............................................. 7
5. DATA .................................................................. 8
6. OUTLINES AND DIMENSIONS ...................... 18
7. WIRING DIAGRAM ......................................... 20
9. TROUBLESHOOTING .................................... 32
June 2008
No. OC376
REVISED EDITION-C
HFC
utilized
R410A
Revision:
· PUMY-P100/125/140
VHMA-BS are added in
REVISED EDITION-C.
· Some descriptions have
been modified.
· Please void OC376
REVISED EDITION-B

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Summary of Contents for Mitsubishi PUMY-P100VHM

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS June 2008 No. OC376 REVISED EDITION-C utilized R410A TECHNICAL & SERVICE MANUAL [Service Ref.] [Model name] <Outdoor unit> PUMY-P100VHM PUMY-P100VHM Revision: · PUMY-P100/125/140 PUMY-P125VHM PUMY-P125VHM VHMA-BS are added in REVISED EDITION-C. PUMY-P140VHM PUMY-P140VHM · Some descriptions have been modified.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PUMY-P100VHM PUMY-P100VHMA PUMY-P125VHM PUMY-P125VHMA PUMY-P140VHM PUMY-P140VHMA Compressor(MC) and oil have been changed. ANB33FDCMT ANB33FDHMT Ester oil Ether oil Electrical parts below have been changed. 1Controller board (MULTI.B.) 2Noise filter circuit board (N.F.) 3Active filter module(ACTM) 4Relay(52C), Resister(RS)(Including N.F.) PEFY-P15 can be connected.
  • Page 3 [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 4 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 time higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 5: Overview Of Units

    OVERVIEW OF UNITS 3-1. UNIT CONSTRUCTION PUMY-P125VHM PUMY-P100VHM PUMY-P140VHM PUMY-P125VHMA PUMY-P100VHMA PUMY-P140VHMA Outdoor unit PUMY-P125VHMA-BS PUMY-P100VHMA-BS PUMY-P140VHMA-BS Indoor Capacity Type 15(VHMA)/20(VHM) ~ Type 125 Type 15(VHMA)/20(VHM) ~Type 140 unit that Number of units 1~ 6 unit 1~ 8 unit can be...
  • Page 6 3-2. UNIT SPECIFICATIONS (1) Outdoor Unit PUMY-P125VHM PUMY-P140VHM PUMY-P100VHM Service Ref. PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA PUMY-P125VHMA-BS PUMY-P140VHMA-BS PUMY-P100VHMA-BS Cooling (kW) 11.2 14.0 15.5 Capacity Heating (kW) 12.5 16.0 18.0 Motor for compressor (kW) Cooling / Heating capacity indicates the maximum value at operation under the following condition.

  • Page 7: Specifications

    SPECIFICATIONS PUMY-P100VHM PUMY-P140VHM PUMY-P125VHM PUMY-P100VHMA PUMY-P140VHMA PUMY-P125VHMA PUMY-P140VHMA-BS PUMY-P100VHMA-BS PUMY-P125VHMA-BS Cooling Capacity 11.2 14.0 15.5 Heating Capacity 12.5 16.0 18.0 Input (Cool) 3.34 4.32 5.35 Input Current (Cool) 15.4/14.8/14.1, 15.4 20.0/19.1/18.3, 20.0 24.7/23.6/22.7,24.7 98.4 98.4 98.4 Power factor (Cool) Input (Heat) 3.66...

  • Page 8: 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.STANDARD CAPACITY DIAGRAM.
  • Page 9 5-2. STANDARD CAPACITY DIAGRAM 5-2-1. PUMY-P100VHM PUMY-P100VHMA( -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 10 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 11 5-2-2. PUMY-P125VHM PUMY-P125VHMA( -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 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* 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 13 5-2-3. PUMY-P140VHM PUMY-P140VHMA( -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 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* 14.60 16.80 4.92 5.23...
  • Page 15 Individual capacity under stated conditions = total capacity under the stated conditions o total capacity at the rated time (3)Capacity correction factor curve Figure 2. PUMY-P100VHM PUMY-P100VHMA PUMY-P100VHMA-BS Figure 1. PUMY-P100VHM PUMY-P100VHMA PUMY-P100VHMA-BS PUMY-P125VHM PUMY-P125VHMA PUMY-P125VHMA-BS PUMY-P125VHM PUMY-P125VHMA PUMY-P125VHMA-BS...
  • Page 16 5-3-2. Correcting Capacity for Changes in the Length of Refrigerant Piping (1) During cooling, to obtain the ratio (and the equivalent piping length) of the outdoor units rated capacity and the total in-use indoor capacity, first find the capacity ratio corresponding to the standard piping length from Figure 3, and then multiply by the cooling capacity from Figure 1 to obtain the actual capacity.
  • Page 17 5-4. NOISE CRITERION CURVES PUMY-P100VHM SPL(dB) PUMY-P125VHM MODE LINE SPL(dB) MODE LINE COOLING PUMY-P100VHMA(-BS) COOLING PUMY-P125VHMA(-BS) HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR NC-20 HEARING FOR NC-20...

  • Page 18: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUMY-P100VHM Unit : mm PUMY-P125VHM PUMY-P140VHM...
  • Page 19 PUMY-P100VHMA(-BS) PUMY-P125VHMA(-BS) PUMY-P140VHMA(-BS)

  • Page 20: Wiring Diagram

    WIRING DIAGRAM PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM SYMBOL NAME SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply> Multi Controller Board CNAC Connector <To Noise Filter Circuit Board> P.B. Power Circuit Board MULTI.B. Terminal Block <Transmission> U/V/W Connection Terminal <U/V/W-Phase> F1,F2 Fuse <6.3A>...
  • Page 21 PUMY-P100VHMA(-BS) PUMY-P125VHMA(-BS) PUMY-P140VHMA(-BS) TH7 TH6 TH3 TH4 SYMBOL NAME 63HS Terminal Block <Power Supply> MULTI. B. Terminal Block <Comunication Line> CNF1 CN3D CN3S CN3N CNLVB Terminal Block <Centralized Control Line> SWU2 SWU1 (WHT) (WHT) (RED) (BLU) (RED) Motor For Compressor 63HS TH7/6 (WHT)

  • Page 22: Necessary Conditions For System Construction

    NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 8-1. TRANSMISSION SYSTEM SETUP...
  • Page 23 8-2. REFRIGERANT SYSTEM DIAGRAM Unit:mm<inch> PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS Refrigerant flow in cooling Refrigerant flow in heating High pressure sensor Service Thermistor (TH7) (63HS) port High pressure Stop valve (Outdoor temperature switch (63H) 4-way valve...
  • Page 24 8-3. SYSTEM CONTROL 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. A. Example of a M-NET remote controller system (address setting is necessary.) Example of wiring control cables Wiring Method and Address Setting 1.
  • Page 25 • Name, Symbol and the Maximum Remote controller Units for Connection Symbol Name Maximum units for connection Outdoor unit — Indoor unit 1 OC unit can be connected to 1-8 IC units (P100 : 1-6 IC units) M-NET remote Maximum 2 RC for 1 indoor unit, Maximum 16 RC for 1 OC controller Permissible Lengths Prohibited items...
  • Page 26 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 27 • Name, Symbol, and the Maximum Units for Connection [ 500 meters (1.25mm • Longest length via outdoor units : L [ 200 meters (1.25mm • Longest transmission cable length : L • Remote controller cable length : R [ 10 meters (0.5 to 1.25mm If the length exceeds 10 meters, use a 1.25 mm shielded wire.
  • Page 28 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 29 Permissible Lengths Prohibited items The MA remote controller and the Longest transmission cable length [ 200m (1.25 mm M-NET remote controller cannot be used together with the indoor unit MA remote controller cable length [ 200m (0.3 ~ 1.25 mm of the same group.
  • Page 30 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 31 • Name, Symbol, and the Maximum Units for Connection Longest length via outdoor unit (M-NET cable): L and L 500 m (1.25 mm or more) Longest transmission cable length (M-NET cable): L and L and L and L and L 200 m (1.25 mm or more) Remote controller cable length: m1 and m1+m2+m3 and m1+m2+m3+m4...

  • Page 32: Troubleshooting

    TROUBLESHOOTING 9-1. CHECK POINTS FOR TEST RUN 9-1-1. Procedures of test run (1) Before test run, make sure that following work is completed. • Installation related : Make sure that the panel of cassette type and electrical wiring is done. Otherwise electrical functions like auto vane will not operate normally.
  • Page 33 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 34 (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 35 9-1-3. Countermeasures for Error During Test Run • If a problem 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 36 Display Abnormal point and detecting method Check points Causes High discharging temperature Over-heated compressor operation is Check intake super heat. 1102 Abnormal if discharge temperature thermistor caused by shortage of refrigerant Check leakage of refrigerant. Defective operation of stop valve Charge additional refrigerant.
  • Page 37 Display Abnormal point and detecting method Check points Causes Refrigerant shortage Gas leakage, Gas shortage Check the refrigerant amount. 1501 When the conditions of below detecting When heating operation, scant Check the operation condition and mode are satisfied during the refrigerant operation (When heating, refrigerant amount.
  • Page 38 Display Abnormal point and detecting method Check points Causes 2502 Drain pump (DP) Malfunction of drain pump Check if drain-up machine works. (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 39 Display Abnormal point and detecting method Check points Causes Drain pump (DP) 2502 Check if drain-up machine 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 40 Display Abnormal point and detecting method Check points Causes Decrease of power supply voltage Check the facility of power supply. 4220 Overvoltage or voltage shortage Disconnection of compressor wiring Correct the wiring (U·V·W phase) to Abnormal if any of followings are detected Defective 52C compressor.
  • Page 41 Display Abnormal point and detecting method Check points Causes 5101 Room temperature thermistor (TH21) Connector (CN20) contact failure Check whether the connector When controller detects short (high (CN20) in the indoor controller board temp.)/open (low temp.) in thermistor is connected or not. during the operation, the operation stops Thermistor wiring disconnection or Check whether the thermistor wiring...
  • Page 42 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 during the operation, the operation stops (CN21) in the indoor controller board and the operation changes to protect mode is connected or not.
  • Page 43 Display Abnormal point and detecting method Check points Causes 5103 Gas pipe temperature thermistor (TH23) 1) Connector (CN29) contact failure Check whether the connector (CN29) When the thermistor detects short/open in the indoor controller board is after 3 minutes-continuous thermo ON connected or not.
  • Page 44 Display Abnormal point and detecting method Check points Causes 5106 Outdoor temperature thermistor (TH7) 1) Connector (TH7) contact failure Check whether the connector (TH7) When controller detects short/open in in the multi controller board is connected or not. thermistor during the operation, the outdoor unit stops once and restarts operation in 3 minutes.
  • Page 45 Display Abnormal point and detecting method Check points Causes 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 decreases by gas Check the internal pressure.
  • Page 46 Display Abnormal point and detecting method Check points Causes 6603 Transmission bus busy error Over error by collision 1) The transmission processor cannot Check whether the transmission line be transmitted since a short cycle of the indoor unit, fresh master, Abnormality when the state, which cannot voltage of the noise etc.
  • Page 47 From the preceding page. Display Abnormal point and detecting method Check points Causes No ACK (Acknowledgement) 6607 Factor that not related to origin 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 passed current, the indoor unit fresh master and lossnay...
  • Page 48 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 49 From the previous page. Display Abnormal point and detecting method Check points Causes 6607 2) When synchronized operation with lossnay in other refrigerant system, the indoor units transmit the signal to the lossnay after the lossnay and same refrigerant system outdoor unit are turned off or turned on again in 2 minutes, and detects abnormality.
  • Page 50 Display Abnormal point and detecting method Check points Causes 6831 Signal reception(Remote controller) Defect of the transmission and reception 6834 Following symptoms are regarded as circuit of the remote controller. Perform a check of the remote abnormality. controller. Defect of the transmission and According to the results, perform the 1) When the remote controller cannot reception circuit of the indoor controller...
  • Page 51 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) [PUMY-P100/125/140VHM] in the connected indoor unit.
  • Page 52 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 53 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 54 9-4. THE FOLLOWING SYMPTOM DO NOT REPRESENT TROUBLE (EMERGENCY) Symptom Display of remote controller CAUSE Even the cooling (heating) The indoor unit can not cool (heat) if other indoor units are heating "Cooling (Heating)" blinks operation selection button (cooling). is pressed, the indoor unit cannot be operated.
  • Page 55 9-5. INTERNAL SWITCH FUNCTION TABLE PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS Operation in Each Switch Setting Switch Step Function Remarks When to Set <Initial Setting> SWU1 1st digit Before turning the power on SWU2 SWU2 SWU1 SWU2...
  • Page 56 Operation in Each Switch Setting Switch Step Function Remarks When to Set — — — — <Initial Setting> Switch of current limitation reading Before turning the Normal Enable in a different way power on. — — — — 2 3 4 5 6 7 8 Restriction of maximum Can be set when Normal...
  • Page 57 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 58 9-7. HOW TO CHECK THE PARTS PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (At the ambient temperature 10 ~30 ) Thermistor (TH4) <Discharge>...
  • Page 59 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. Give 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 60 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 61 9-9. TEST POINT DIAGRAM Outdoor multi controller board PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS CN51 CN102 External signal Connect to the M-P.B Pump down Test run Forced defrost Model select output (Transmission power board) CN40,CN41 Demand/ Silent selection...
  • Page 62 W Usually, they are in a state of being short-circuited if they are broken. Outdoor power circuit board Measure the resistance in the following points (connectors, etc.). PUMY-P100VHM If they are short-circuited, it means that they are broken. 1. Check of POWER MODULE PUMY-P125VHM 1.Check of DIODE circuit...
  • Page 63 Outdoor noise filter circuit board PUMY-P100VHM PUMY-P125VHM LO, NO Voltage of 220-240V AC is output PUMY-P140VHM TABS (Connect to the outdoor power circuit board) TABT CNAC2 220-240V AC (Connect to the outdoor control- ler circuit board (CNAC)) Primary current (Connect to the...
  • Page 64 Outdoor noise filter circuit board PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-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 (Connect to the circuit board) outdoor control- ler circuit board...
  • Page 65 Transmission power board PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS Connect to the outdoor multi controller board 1-2: 24–30V DC 3-4: 24–30V DC Connect to the outdoor noise filter circuit board 1–3 : 220–240V AC...
  • Page 66 Active filter module Connect to the out- PUMY-P100VHM Non-connect door power circuit PUMY-P125VHM board(TABP2) L1, L2 PUMY-P140VHM Connect to the DCL(Reactor) – Connect to the out- door power circuit Connect to Connect to Not used board(CNAF) the outdoor Connect to the 52C...
  • Page 67 Active filter module PUMY-P100VHMA PUMY-P100VHMA-BS Connect to the outdoor power PUMY-P125VHMA PUMY-P125VHMA-BS circuit board (TABP2) PUMY-P140VHMA PUMY-P140VHMA-BS L1, L2 Non-connect Connect to the DCL (Reactor) Lower Upper side side Non-connect Connect to the outdoor power circuit board (TABP1) – Connect to the outdoor Connect to the outdoor power Connect to the outdoor power circuit board (CNAF)
  • Page 68 SW:setting 0..OFF 9-10. OUTDOOR UNIT FUNCTIONS 1..ON...

  • Page 75: Electrical Wiring

    ELECTRICAL WIRING This chapter provides an introduction to electrical wiring for the CITY MULTI-S series, including 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 76 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 77 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 78: Refrigerant Piping Tasks

    REFRIGERANT PIPING TASKS 11-1. REFRIGERANT PIPING SYSTEM Line-Branch Method Connection Examples (Connecting to Four Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+B+C+D+a+b+c+d+e 120m Permissible Farthest Piping Length A+B+C+D+e Length Farthest Piping Length After First Branch B+C+D+e Height Difference in Indoor/Outdoor Section 30 meters or less (If the outdoor unit is lower, 20 meters or less) Permissible High/...
  • Page 79 Header-Branch Method Connection Examples (Connecting to Four Indoor Units) Outdoor Unit First Branch Indoor unit Total Piping Length A+a+b+c+d+e+f 120m Permissible Farthest Piping Length Length Farthest Piping Length After First Branch f is 30 meters or less Height Difference in Indoor/Outdoor Section 30 meters or less (If the outdoor unit is lower, 20 meters or less) Permissible High/ Low Difference...
  • Page 80 Note: The total of downstream unit models in the table is the total of models as seen from point A in the figure below. Note: Pipe re-branching after the header branching is not possible. Method of Combined Branching of Lines and Headers Connection Examples (Connecting to Five Indoor Units)
  • Page 81 11-2. PRECAUTIONS AGAINST REFRIGERANT LEAKAGE 11-2-1. Introduction (2) Calculate room volumes (K) 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 The part with represents the room with the smallest unit into the room where the unit is installed may be del- volume.

  • Page 82: Disassembly Procedure

    DISASSEMBLY PROCEDURE OUTDOOR UNIT : PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-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 × 10) and slide...
  • Page 83 From the previous page. OPERATING PROCEDURE PHOTOS & ILLUSTRATION Photo 4 (6) Remove electrical parts box fixing screw (4 × 10) and 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 84 PHOTOS OPERATING PROCEDURE 6. Removing the thermistor <Outdoor pipe> (TH3) and thermistor <Discharge> (TH4) Photo 7 (1) Remove the service panel. (See figure 1.) Thermistor (2) Disconnect the connectors, TH3 (white) and TH4 (white), <Outdoor pipe> on the Multi controller board in the electrical parts box. (TH3) (3) Loosen the clamp for the lead wire in the rear of the electrical parts box.
  • Page 85 OPERATING PROCEDURE PHOTOS Photo 9 9. Removing bypass valve coil (SV1) and bypass valve (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 × 10) in the rear of the unit and remove the right side panel.
  • Page 86 OPERATING PROCEDURE PHOTOS Photo 11 12. 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 × 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing screws (5 ×...

  • Page 87: Parts List

    SIDE PANEL (L) FAN GRILLE FRONT PANEL SEPARATOR (BK00C143G80) – BASE ASSY MOTOR SUPPORT VALVE BED ASSY (BK00C142G15) – HANDLE COVER PANEL (FRONT) COVER PANEL (REAR) SIDE PANEL (R) SERVICE PANEL LABEL (MITSUBISHI) (DG79R130H01) – REAR GUARD TOP PANEL HANDLE...
  • Page 88 13-2. FUNCTIONAL PARTS PUMY-P125VHM...
  • Page 89 Part numbers that are circled are not shown in the figure. ty/set Wiring Recom- Remarks Diagram Part No. Part Name Specification mended (Drawing No.) PUMY-P125VHM Symbol MF1,2 FAN MOTOR PROPELLER FAN CHARGE PLUG ANB33FDCMT COMPRESSOR Including RUBBER MOUNT STOP VALVE BALL VALVE STRAINER ACCUMULATOR...

  • Page 90: Rohs Parts List

    RoHS PARTS LIST 14-1. FUNCTIONAL PARTS PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM...
  • Page 91 Part numbers that are circled are not shown in the figure. Q'ty/set Wiring Recom- Remarks Part No. Part Name Specification Diagram mended PUMY- (Drawing No.) Symbol Q'ty P100, 125, 140VHM FAN MOTOR MF1,2 PROPELLER FAN CHARGE PLUG ANB33FDCMT COMPRESSOR Including RUBBER MOUNT STOP VALVE BALL VALVE...
  • Page 92 FUNCTIONAL PARTS PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS...
  • Page 93 Part numbers that are circled are not shown in the figure. Q'ty/set Wiring Recom- Remarks Part No. Part Name Specifi cations PUMY-P100, 125, 140 Diagram mended (Drawing No.) Symbol Q'ty VHMA VHMA-BS T7W E27 763 FAN MOTOR MF1, 2 R01 E08 115 PROPELLER FAN R01 E09 097 NUT R01 E14 413 CHARGE PLUG...
  • Page 94 14-2. STRUCTURAL PARTS PUMY-P100VHM PUMY-P125VHM PUMY-P140VHM PUMY-P100VHMA PUMY-P125VHMA PUMY-P140VHMA PUMY-P100VHMA-BS PUMY-P125VHMA-BS PUMY-P140VHMA-BS 5 6 7 Q'ty/set Wiring Recom- Remarks Part No. Part Name Specifi cation Diagram mended PUMY-P100,125,140VHM (Drawing No.) PUMY-P100,125,140VHMA-BS Symbol Q'ty PUMY-P100,125,140VHMA — F.ST SCREW (5×10) (DG12F536H10) T 7 W E 0 3 6 6 2...

  • Page 95: Optional Parts

    OPTIONAL PARTS DRAIN SOCKET Part No. PAC-SG61DS-E AIR OUTLET GUIDE Part No. PAC-SG59SG-E w Need 2 pieces. AIR GUIDE Part No. PAC-SH63AG-E w Need 2 pieces. DRAIN PAN Part No. PAC-SG64DP-E FILTER DRYER (For liquid line : [9.52) Part No. PAC-SG82DR-E w Only for R410A model (Don’t use for R22 model.) BRANCH PIPE (Joint)
  • Page 96 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jun. 2008 No. OC376 REVISED EDITION-C PDF 7 Distributed in Jan. 2008 No. OC376 REVISED EDITION-B PDF 9 Distributed in Aug. 2006 No. OC376 REVISED EDITION-A PDF 8 New publication, effective Jun.

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