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Mitsubishi Electric PUHZ-W50VHA Service Manual

Split-type, air to water heat pump r410a
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SPLIT-TYPE, AIR TO WATER HEAT PUMP

SERVICE MANUAL

[Model Name]
PUHZ-W50VHA
PUHZ-W85VHA
PUHZ-HW112YHA
PUHZ-HW112YHA2
PUHZ-HW140VHA
PUHZ-HW140YHA
PUHZ-HW140VHA2
PUHZ-HW140YHA2
[Service Ref.]
Refer to page 2.
PUHZ-W85VHA(R1)
PUHZ-W85VHA(R1)-BS
R410A
PUHZ-W50VHA-BS
PUHZ-W85VHA-BS
PUHZ-HW112YHA-BS
PUHZ-HW112YHA2-BS
PUHZ-HW140VHA-BS
PUHZ-HW140YHA-BS
PUHZ-HW140VHA2-BS
PUHZ-HW140YHA2-BS
CONTENTS
1. TECHNICAL CHANGES .................................. 3
2. SAFETY PRECAUTION ................................... 5
3. SPECIFICATIONS ............................................ 8
4. DATA ............................................................. 31
5. OUTLINES AND DIMENSIONS ..................... 34
6. WIRING DIAGRAM ........................................ 37
7. WIRING SPECIFICATIONS ........................... 49
8. REFRIGERANT SYSTEM DIAGRAM ............... 50
9. TROUBLESHOOTING ................................... 52
10. DISASSEMBLY PROCEDURE .................... 103
PARTS CATALOG (OCB439)
April 2019
No. OCH439
REVISED EDITION-M
Revision:
• Added
PUHZ-HW112YHA2R7,
PUHZ-HW112YHA2R7-BS,
PUHZ-HW140VHA2R7,
PUHZ-HW140VHA2R7-BS,
PUHZ-HW140YHA2R7 and
PUHZ-HW140YHA2R7-BS in
REVISED EDITION-M.
• Some descriptions have been
modified.
• OCH439 REVISED EDITION-L
is void.
Notes:
• This manual describes service
data of outdoor unit only.

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  Summary of Contents for Mitsubishi Electric PUHZ-W50VHA

  • Page 1: Service Manual

    SPLIT-TYPE, AIR TO WATER HEAT PUMP April 2019 No. OCH439 REVISED EDITION-M SERVICE MANUAL R410A [Model Name] Revision: PUHZ-W50VHA-BS PUHZ-W50VHA • Added PUHZ-HW112YHA2R7, PUHZ-W85VHA-BS PUHZ-HW112YHA2R7-BS, PUHZ-W85VHA PUHZ-HW140VHA2R7, PUHZ-HW140VHA2R7-BS, PUHZ-HW112YHA PUHZ-HW112YHA-BS PUHZ-HW140YHA2R7 and PUHZ-HW140YHA2R7-BS in PUHZ-HW112YHA2-BS PUHZ-HW112YHA2 REVISED EDITION-M. • Some descriptions have been...
  • Page 2 [Service Ref.] PUHZ-W50VHA PUHZ-W50VHA-BS PUHZ-W50VHAR1 PUHZ-W50VHAR1-BS PUHZ-W50VHAR2-BS PUHZ-W50VHAR2 PUHZ-W50VHAR3 PUHZ-W50VHAR3-BS PUHZ-W85VHA PUHZ-W85VHA-BS PUHZ-W85VHAR1 PUHZ-W85VHAR1-BS PUHZ-HW112YHA PUHZ-HW112YHA-BS PUHZ-HW112YHA2 PUHZ-HW112YHA2-BS PUHZ-HW112YHA2R1 PUHZ-HW112YHA2R1-BS PUHZ-HW112YHA2R3-BS PUHZ-HW112YHA2R3 PUHZ-HW112YHA2R4 PUHZ-HW112YHA2R4-BS PUHZ-HW112YHA2R5 PUHZ-HW112YHA2R5-BS PUHZ-HW112YHA2R6 PUHZ-HW112YHA2R6-BS PUHZ-HW112YHA2R7 PUHZ-HW112YHA2R7-BS PUHZ-HW140VHA-BS PUHZ-HW140VHA PUHZ-HW140YHA PUHZ-HW140YHA-BS PUHZ-HW140VHA2 PUHZ-HW140VHA2-BS PUHZ-HW140VHA2R1 PUHZ-HW140VHA2R1-BS PUHZ-HW140VHA2R2-BS PUHZ-HW140VHA2R3-BS...
  • Page 3: Technical Changes

    HW112Y : ANB33FJFMT → ANB33FJJMT HW140Y : ANB42FJFMT → ANB42FJJMT HW140V : ANB42FJGMT → ANB42FJKMT PUHZ-HW112YHA2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW140VHA2 PUHZ-HW140VHA2R1 PUHZ-HW140VHA2R1-BS PUHZ-HW140VHA2R2-BS 1. Plate heat exchanger has been changed. PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) 1. Heat exchanger has been changed. PUHZ-HW140VHA2-BS PUHZ-HW140VHA2R1-BS 1. Controller circuit board (C.B.) has been changed. (S/W version up) OCH439M...
  • Page 4 PUHZ-HW112YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW140YHA2(-BS) 1. Heat exchanger has been changed. 2. Compressor has been changed. (only HW140) HW140V : ANB33FJGMT → ANB42FJGMT HW140Y : ANB33FJFMT → ANB42FJFMT 3. Refrigerant charge has been changed. (only HW140) 4.0 kg → 4.3 kg 4. Plate heat exchanger has been changed. ACH50 → ACH70 5. Muffler has been deleted. 6.
  • Page 5: Safety Precaution

    SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. Preparation before the repair service. • Prepare the proper tools. • Prepare the proper protectors. • Provide adequate ventilation. • After stopping the operation of the air conditioner, turn off the power-supply breaker. •...
  • Page 6: Cautions For Service

    [1] Cautions for service (1) Perform service after recovering the refrigerant left in the unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. [2] Additional refrigerant charge When charging directly from cylinder ·...
  • Page 7 2-3. CAUTIONS FOR REFRIGERANT PIPING WORK Tools for R410A (The following table shows whether conventional tools can be used or not.) Can R22 tools be Tools and materials R410A tools Can R407C tools be used? used? × × Gauge manifold Tool exclusive for R410A Air purge, refrigerant charge and operation check...
  • Page 8: Specifications

    SPECIFICATIONS 3-1. SPECIFICATIONS PUHZ-W50VHA PUHZ-W50VHA-BS PUHZ-W50VHAR1 PUHZ-W50VHAR1-BS 1[ , 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 14.3 Heating(A7/W35) Heating y t i 5.00 °C 4.10 (A7/W35) °C 1.22 l n i °C Heating y t i 5.00...
  • Page 9 PUHZ-W50VHAR2 PUHZ-W50VHAR2-BS PUHZ-W50VHAR3 PUHZ-W50VHAR3-BS 1[ , 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 14.3 Heating(A7/W35) Heating y t i 5.00 °C 4.10 (A7/W35) °C 1.22 l n i °C Heating y t i 5.00 Heating(A2/W35) 3.13 (A2/W35) °C 1.60...
  • Page 10 PUHZ-W85VHA PUHZ-W85VHA-BS PUHZ-W85VHAR1 PUHZ-W85VHAR1-BS 1φ, 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 25.8 Heating(A7/W35) Heating y t i 9.00 ℃ 3.85 (A7/W35) ℃ 2.34 l n i ℃ Heating y t i 8.50 Heating(A2/W35) 2.95 (A2/W35) ℃...
  • Page 11 PUHZ-HW112YHA PUHZ-HW112YHA-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ 4.24 (A7/W35) ℃ 2.64 l n i ℃ Heating y t i 11.20 Heating(A2/W35) 3.01 (A2/W35) ℃ 3.72 ℃...
  • Page 12 PUHZ-HW140VHA PUHZ-HW140VHA-BS 1φ , 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) 14.00 Heating y t i ℃ (A7/W35) 4.19 ℃ 3.34 l n i ℃ Heating y t i 14.00 Heating(A2/W35) 2.69 (A2/W35) ℃ 5.21 ℃...
  • Page 13 PUHZ-HW140YHA PUHZ-HW140YHA-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) 14.00 Heating y t i ℃ (A7/W35) 4.19 ℃ 3.34 l n i ℃ Heating y t i 14.00 Heating(A2/W35) 2.69 (A2/W35) ℃ 5.21 ℃...
  • Page 14 PUHZ-HW112YHA2 PUHZ-HW112YHA2-BS 3 φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ (A7/W35) 4.42 ℃ l n i 2.53 ℃ Heating y t i Heating(A2/W35) 11.20 (A2/W35) 3.11 ℃ 3.60 ℃...
  • Page 15 PUHZ-HW140VHA2 PUHZ-HW140VHA2-BS PUHZ-HW140VHA2R1-BS 1φ, 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃...
  • Page 16 PUHZ-HW140YHA2 PUHZ-HW140YHA2-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ Heating y t i 14.00 Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃...
  • Page 17 PUHZ-HW112YHA2R1 PUHZ-HW112YHA2R1-BS 3 φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ (A7/W35) 4.42 ℃ l n i 2.53 ℃ Heating y t i 11.20 Heating(A2/W35) (A2/W35) 3.11 ℃ 3.60 ℃...
  • Page 18 PUHZ-HW112YHA2R3 PUHZ-HW112YHA2R3-BS PUHZ-HW112YHA2R4 PUHZ-HW112YHA2R4-BS 3 φ, 400V, 50Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ (A7/W35) 4.42 ℃ l n i 2.53 ℃ Heating y t i 11.20 Heating(A2/W35) (A2/W35) 3.11 ℃ 3.60 ℃...
  • Page 19 PUHZ-HW112YHA2R5 PPUHZ-HW112YHA2R6 UHZ-HW112YHA2R5-BS PUHZ-HW112YHA2R6-BS 3 φ, 400 V, 50Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ (A7/W35) 4.43 ℃ l n i 2.53 ℃ Heating y t i 11.20 Heating(A2/W35) (A2/W35) 3.11 ℃...
  • Page 20 PUHZ-HW112YHA2R7 PUHZ-HW112YHA2R7-BS 3 φ, 400 V, 50Hz Nominal water flow rate (Heating mode) L/min 32.1 Heating(A7/W35) Heating y t i 11.20 ℃ (A7/W35) 4.43 ℃ l n i 2.53 ℃ Heating y t i 11.20 Heating(A2/W35) (A2/W35) 3.11 ℃ 3.60 ℃...
  • Page 21 PUHZ-HW140VHA2R1 PUHZ-HW140VHA2R2-BS 1φ, 230V, 50Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ 4.25 (A7/W35) ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) (A2/W35) 3.11 ℃ 4.50 ℃ Pressure difference (water circuit) l n i  ...
  • Page 22 PUHZ-HW140VHA2R3 PUHZ-HW140VHA2R3-BS PUHZ-HW140VHA2R4 PUHZ-HW140VHA2R4-BS 1φ, 230V, 50Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃...
  • Page 23 PUHZ-HW140VHA2R5 PUHZ-HW140VHA2R6 PUHZ-HW140VHA2R5-BS PUHZ-HW140VHA2R6-BS 1φ, 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃...
  • Page 24 PUHZ-HW140VHA2R7 PUHZ-HW140VHA2R7-BS 1φ, 230 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃...
  • Page 25 PUHZ-HW140YHA2R1 PUHZ-HW140YHA2R1-BS 3φ, 400V, 50Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃ Pressure difference (water circuit) l n i  ...
  • Page 26 PUHZ-HW140YHA2R3 PUHZ-HW140YHA2R3-BS PUHZ-HW140YHA2R4 PUHZ-HW140YHA2R4-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃...
  • Page 27 PUHZ-HW140YHA2R5 PUHZ-HW140YHA2R6 PUHZ-HW140YHA2R5-BS PUHZ-HW140YHA2R6-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ (A7/W35) 4.25 ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃...
  • Page 28 PUHZ-HW140YHA2R7 PUHZ-HW140YHA2R7-BS 3φ, 400 V, 50 Hz Nominal water flow rate (Heating mode) L/min 40.1 Heating(A7/W35) Heating y t i 14.00 ℃ 4.25 (A7/W35) ℃ 3.29 l n i ℃ 14.00 Heating y t i Heating(A2/W35) 3.11 (A2/W35) ℃ 4.50 ℃...
  • Page 29: Available Range

    3-2. AVAILABLE RANGE (WATER FLOW RATE, RETURN WATER TEMP.) Note: If using the unit out of the available range, the parts of unit might be damaged. <Heating> <Applicable Models> • PUHZ-W50VHA(-BS) 19.0 Available range • PUHZ-W50VHAR1(-BS) 17.0 • PUHZ-W50VHAR2(-BS) 15.0 •...
  • Page 30 <Cooling> <Applicable Models> • PUHZ-W50VHA(-BS) 19.0 • PUHZ-W50VHAR1(-BS) Available range 17.0 • PUHZ-W50VHAR2(-BS) 15.0 • PUHZ-W50VHAR3(-BS) 13.0 11.0 10.0 11.0 12.0 13.0 14.0 Water flow rate [L/min] Table 4 <Applicable Models> 15.0 • PUHZ-W85VHA(-BS) 14.0 • PUHZ-W85VHAR1(-BS) Available range 13.0 12.0...
  • Page 31: Noise Criterion Curves

    DATA 4-1. NOISE CRITERION CURVES PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) SPL(dB) MODE SPL(dB) LINE MODE LINE PUHZ-W85VHA(-BS) PUHZ-W50VHAR2(-BS) COOLING COOLING PUHZ-W85VHAR1(-BS) PUHZ-W50VHAR3(-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...
  • Page 32: Standard Operation Data

    (A35/W7) (A7/W35) Capacity 4,500 5,000 7,500 9,000 10,000 11,200 Input 1.52 1.21 3.12 2.31 3.67 2.63 Outdoor unit PUHZ-W50VHA PUHZ-W85VHA PUHZ-HW112YHA Phase, Hz 1, 50 1, 50 3, 50 Voltage Current 13.7 10.3 Discharge pressure 2.51 2.13 2.81 2.21 2.63 2.07...
  • Page 33 Cooling Heating Cooling Heating Cooling Heating Mode (A35/W7) (A7/W35) (A35/W7) (A7/W35) (A35/W7) (A7/W35) Capacity 12,500 14,000 10,000 11,200 12,500 14,000 Input 4.80 3.32 3.60 2.53 5.00 3.29 PUHZ-HW140VHA/ PUHZ-HW140VHA2/ Outdoor unit PUHZ-HW112YHA2 PUHZ-HW140YHA PUHZ-HW140YHA2 Phase, Hz 1 / 3, 50 3, 50 1 / 3, 50 Voltage...
  • Page 34: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W50VHAR2(-BS) PUHZ-W50VHAR3(-BS) Unit: mm OCH439M...
  • Page 35 PUHZ-W85VHA(-BS) PUHZ-W85VHAR1(-BS) Unit: mm OCH439M...
  • Page 36 PUHZ-HW112YHA(-BS) PUHZ-HW140VHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R4(-BS) PUHZ-HW112YHA2R5(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140YHA2R7(-BS) PUHZ-HW140VHA2R7(-BS) Unit: mm OCH439M...
  • Page 37: Wiring Diagram

    WIRING DIAGRAM PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply,Interface unit / CB1-3 Main Smoothing Capacitor Flow temp. controller> PFC/IPM Power Module Motor for Compressor N.F. Noise Filter Circuit Board Fan Motor Connection Terminal<L-Phase> LI,LO 21S4 Solenoid Valve<Four-Way Valve>...
  • Page 38 PUHZ-W50VHAR2(-BS) PUHZ-W50VHAR3(-BS) SYMBOL NAME SYMBOL NAME CB1, CB2, CB3 Main Smocthing Capacitor Terminal Block<Power Supply, Interface unit / Flow temp. controller> PFC/IPM Power Module Motor for Compressor N. F. Noise Filter Circuit Board Fan Motor Connection Terminal<L-Phase> LI, LO 21S4 Solenoid Valve(Four-Way Valve) NI, NO Connection Terminal<N-Phase>...
  • Page 39 PUHZ-W85VHA(-BS) SYMBOL NAME SYMBOL NAME TABN1/N2 Connection Terminal <DC Voltage> Terminal Block <Power Supply,Interface unit / Flow temp. controller> DS2, DS3 Diode bridge Motor for Compressor Power Module Fan Motor N.F. Noise Filter Circuit Board 21S4 Solenoid Valve <Four-Way Valve> LI,LO Connection Terminal <L-Phase>...
  • Page 40 PUHZ-W85VHAR1(-BS) SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply,Interface unit / TABP1/P2 Connection Terminal < DC Voltage> Flow temp. controller> TABN1/N2 Connection Terminal < DC Voltage> Motor for Compressor DS2, DS3 Diode bridge Fan Motor Power Module 21S4 Solenoid Valve <Four-Way Valve> N.F.
  • Page 41: Power Supply

    PUHZ-HW140VHA(-BS) SYMBOL NAME P.B. Power Circuit Board Terminal Block<Power Supply, Interface unit / U/V/W Connection Terminal<U/V/W-Phase> Flow Temp. controller-Outdoor> Connection Terminal<L-Phase> Motor for Compressor Connection Terminal<N-Phase> MF1,MF2 Fan Motor DCL1,DCL2 Connection Terminal<Reactor> 21S4 Solenoid Valve<Four-Way Valve> Power Module IGBT High Pressure Switch Connection Terminal<Ground>...
  • Page 42 PUHZ-HW112YHA(-BS) PUHZ-HW140YHA(-BS) SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> N.F. Noise Filter Circuit Board Terminal Block<Interface unit /Flow Temp. Connection Terminal<L1/L2/L3/N-Power Supply> LI1/LI2/LI3/NI controller-Outdoor> LO1/LO2/LO3/NO Connection Terminal<L1/L2/L3/N-Power Supply> Motor for Compressor GD1,GD3 Connection Terminal<Ground> MF1,MF2 Fan Motor CONV.B. Converter Circuit Board 21S4 Solenoid Valve<Four-Way Valve>...
  • Page 43 PUHZ-HW112YHA2(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2(-BS) SYMBOL NAME SYMBOL NAME N.F. Noise Filter Circuit Board Terminal Block < Power Supply> Terminal Block < Interface unit /Flow Temp. Connection Terminal <L1/L2/L3/N-Power Supply > LI1/LI2/LI3/NI controller-Outdoor> LO1/LO2/LO3/NO Connection Terminal <L1/L2/L3/N-Power Supply > Motor for Compressor GD1,GD3 Connection Terminal <Ground >...
  • Page 44 PUHZ-HW112YHA2R3(-BS) PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140YHA2R4(-BS) 1 MODEL SELECT SYMBOL NAME SYMBOL NAME The black square ( ) indicates a switch position. Terminal Block<Power Supply> N. F. Noise Filter Circuit Board MODEL SW5-6 Terminal Block<Indoor/Outdoor> Connection Terminal<L1/L2/L3-Power Supply> LI1, LI2, LI3, NI 112Y Motor for Compressor LO1, LO2, LO3, NO...
  • Page 45 PUHZ-HW112YHA2R5(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140YHA2R7(-BS) SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> Rush Current Protect Resistor Terminal Block<Indoor/Outdoor> P. B. Power Circuit Board MODEL Motor for Compressor N. F. Noise Filter Circuit Board 112Y MF1, MF2 Fan Motor CONV. B. Converter Circuit Board 1 2 3 4 5 6 7 8 1 2 3 4 5 6...
  • Page 46 PUHZ-HW140VHA2(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140VHA2R2-BS SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply, Interface unit / Connection Terminal < N-Phase > Flow Temp. controller-Outdoor> DCL1,DCL2 Connection Terminal < Reactor > Motor for Compressor IGBT Power Module MF1,MF2 Fan Motor Connection Terminal < Ground > EI,E2,E3,E4 21S4 Solenoid Valve <Four-Way Valve>...
  • Page 47 PUHZ-HW140VHA2R3(-BS) PUHZ-HW140VHA2R4(-BS) 1 MODEL SELECT SYMBOL NAME SYMBOL NAME The black square ( ) indicates a switch position. Terminal Block<Power Supply, Indoor/Outdoor> Connection Terminal<N-Phase> MODEL SW5-6 Motor for Compressor Connection Terminal<Reactor> DCL1, DCL2 140V MF1, MF2 Fan Motor IGBT Power Module 1 2 3 4 5 6 7 8 1 2 3 4 5 6 21S4...
  • Page 48 PUHZ-HW140VHA2R5(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140VHA2R7(-BS) SYMBOL NAME SYMBOL NAME 1 MODEL SELECT Terminal Block<Power Supply, Indoor/Outdoor> CY1, CY2 Capacitor MODEL SW5-6 Motor for Compressor P. B. Power Circuit Board 140V MF1, MF2 Fan Motor C. B. Controller Circuit Board 1 2 3 4 5 6 7 8 1 2 3 4 5 6 21S4 Solenoid Valve(4-Way Valve)
  • Page 49: Wiring Specifications

    WIRING SPECIFICATIONS FIELD ELECTRICAL WIRING (power wiring specifications) 140V t i n 112Y, 140Y Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V 3N~ (3phase), 50 Hz, 400 V t i n c r i t i u...
  • Page 50: Refrigerant System Diagram

    Refrigerant flow in cooling Refrigerant flow in heating Detail Symbol Part name COMP Compressor DC inverter twin rotary compressor (Mitsubishi Electric Corporation) H/P SW High pressure switch (63H) For protection (OFF: 4.15 MPa) Plate HEX Plate Heat Exchanger ACH30-30 (ALFA LAVAL)
  • Page 51: Stop Valve

    Refrigerant flow in cooling Refrigerant flow in heating Symbol Part name Detail COMP Compressor DC inverter scroll compressor (Mitsubishi Electric Corporation) H/P SW High pressure switch (63H) For protection (OFF: 4.15MPa) L/P SW Low pressure switch (63L) For protection (OFF: -0.03MPa)
  • Page 52: Troubleshooting

    TROUBLESHOOTING 9-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summarized in the table below. Check the contents below before investigating details.
  • Page 53 9-3. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> Check Code Abnormal point and detection method Cause Judgment and action 1 Check following items. 1 No voltage is supplied to terminal block (TB1) of outdoor unit. a) Power supply breaker a) Power supply breaker is b) Connection of power supply terminal block turned off.
  • Page 54 Check Code Abnormal point and detection method Cause Judgment and action 63H connector open 1 Disconnection or contact fail- 1 Check connection of 63H connector on Abnormal if 63H connector circuit is open ure of 63H connector on out- outdoor controller circuit board. for 3 minutes continuously from being door controller circuit board Refer to "9-6.
  • Page 55 <Abnormalities detected while unit is operating> Check Code Abnormal point and detection method Cause Judgment and action High pressure (High pressure switch 1 Decreased water flow 1–5 Check water circuit and repair the defect. 63H operated) 2 Clogged filter of water pipe Abnormal if high pressure switch 63H 3 Dirt of plate heat exchanger operated (*) during compressor operation.
  • Page 56 Check Code Abnormal point and detection method Cause Judgment and action Open/short of outdoor unit thermistors 1 Check connection of connector (TH3, TH32, 1 Disconnection or contact failure (TH3, TH32, TH33, TH6, TH7, and TH8) TH33, TH6/TH7) on the outdoor controller of connectors circuit board.
  • Page 57 Check Code Abnormal point and detection method Cause Judgment and action To find out the details about U9 error, turn ON SW2-1, 2-2, 2-3, 2-4, 2-5 and 2-6 when U9 error occurs. Detailed To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. codes Refer to "9-7.
  • Page 58 Check Code Abnormal point and detection method Cause Judgment and action Abnormal power synchronous 1 Check the field facility for the power supply. 1 Distortion of power source Detailed codes signal voltage, noise superimposition 2 Check earth wiring. • No input of power 2 Disconnection or loose con- synchronous signal to power nection of earth wiring...
  • Page 59 Check Code Abnormal point and detection method Cause Judgment and action Current sensor error or input current error 1 Disconnection of compressor 1 Correct the wiring (U W phase) to compres- • • · A bnormal if current sensor detects −1.0 A wiring sor. Refer to "9-6. TEST POINT DIAGRAM" to 1.0 A during compressor operation.
  • Page 60 Check Code Abnormal point and detection method Cause Judgment and action Remote controller transmission error 1 Refer to the indoor unit's 1 Refer to the indoor unit's Installation Manual Installation Manual for remote for remote controller connection. (E3)/signal receiving error (E5) controller connection.
  • Page 61 Check Code Abnormal point and detection method Cause Judgment and action Freezing/overheating protection is working (1) Freezing protection (1) Freezing protection <Cooling mode> (1) Freezing protection <Cooling mode> 1 Reduced water flow <Cooling mode> 12 Check water piping. · Clogged filter Abnormal if plate heat exchanger pipe ·...
  • Page 62 9-4. HOW TO CHECK THE PARTS PUHZ-W50VHA(-BS) PUHZ-W85VHA(-BS) PUHZ-HW112YHA(-BS) PUHZ-HW140VHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W85VHAR1(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-W50VHAR2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-W50VHAR3(-BS) PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R4(-BS) PUHZ-HW112YHA2R5(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140YHA2R7(-BS) PUHZ-HW140VHA2R7(-BS) Parts name Checkpoints TH3: Liquid pipe temp.
  • Page 63 Check method of DC fan motor (fan motor/outdoor multi controller circuit board) 1 Notes · High voltage is applied to the connector (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. (It may damage the outdoor controller circuit board and fan motor.) 2 Self check Symptom: The outdoor fan cannot rotate.
  • Page 64 9-5. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Liquid> (TH3) • Thermistor <Plate Hex liquid> (TH6) • Thermistor <Ambient> (TH7) • Thermistor <Suction> (TH33 for HW112,140) Thermistor R0 = 15 k" ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t –...
  • Page 65 Low temperature thermistor • Thermistor <Inlet water> (TH32) Thermistor R0 = 15 kΩ ± 2.5% B constant = 3450 ± 2% =15exp{3450( 273+t – 273 )} 15 kΩ 30: 4.3 kΩ 10: 9.6 kΩ 40: 3.0 kΩ 20: 6.3 kΩ 25: 5.2 kΩ -20 -10 10 20 30 40 50 Temperature(:) <HIGH PRESSURE SENSOR> Vout (V) MULTI CONTROLLER BOARD...
  • Page 66 Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the outdoor controller board and the linear expansion valve>...
  • Page 67 (3) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Stopper Coil Lead wire <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward.
  • Page 68: Test Point Diagram

    9-6. TEST POINT DIAGRAM Outdoor controller circuit board <CAUTION> TEST POINT 1 is high voltage. PUHZ-W50VHA(-BS) PUHZ-W85VHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W85VHAR1(-BS) PUHZ-W50VHAR2(-BS) (TEST POINT 2) CNDC PUHZ-W50VHAR3(-BS) (voltage between pins of 280–380 V DC High pres- C6B): 15 V DC Connect from outdoor sure switch power circuit board.
  • Page 69 <CAUTION> TEST POINT 1 is high voltage. Outdoor controller circuit board PUHZ-HW112YHA(-BS) PUHZ-HW140VHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) Operation monitor function Manual defrost, detect history record reset CNDM Function switch 1–2: Input of low-level (HW·HA2 only) sound priority mode Model select CN52C Connect to the power...
  • Page 70 Outdoor controller circuit board <CAUTION> TEST POINT 1 is high voltage. PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R4(-BS) Manual defrost, detect Function switch Operation monitor history record reset function Function switch (HW·HA2 only) CNDM 1–2: Input of low-level sound priority mode CN52C Model select Connect to the power...
  • Page 71 <CAUTION> TEST POINT 1 is high voltage. Outdoor controller circuit board PUHZ-HW112YHA2R5(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140YHA2R7(-BS) PUHZ-HW140VHA2R7(-BS) CN52C CNDM Connect to the power Manual defrost, 1–2: circuit board (CN52C) detect history Input of low-level Operation record reset sound priority mode (HW140V) monitor function...
  • Page 72 Outdoor noise filter circuit board PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W50VHAR2(-BS) PUHZ-W50VHAR3(-BS) EI, E2 Connect to the earth Connect to the earth CNAC1, CNAC2 230 V AC (Connect to the out- door controller cir- cuit board (CNAC)) Primary current (Connect to the outdoor power...
  • Page 73 Outdoor noise filter circuit board LO, NO PUHZ-W85VHA(-BS) Voltage of 230 V AC is output. Connect to the outdoor power PUHZ-W85VHAR1(-BS) circuit board (TABS, TABT). CNAC1, CNAC2 230 V AC Connect to the out- door controller cir- cuit board (CNAC). Connect to the earth.
  • Page 74 Outdoor noise filter circuit board PUHZ-HW112YHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1: 400 V AC input LI1-NI/LI2-NI/LI3-NI: 230 V AC input (Connect to the terminal block (TB1)) Connect to the earth CNAC1, CNAC2 230 V AC (Connect to the outdoor controller Connect to the earth...
  • Page 75 Outdoor noise filter circuit board PUHZ-HW112YHA2R3(-BS) PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140YHA2R4(-BS) LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1: 400 V AC input LI1-NI/LI2-NI/LI3-NI: 230 V AC input (Connect to the terminal block (TB1)) Connect to the earth CNAC1, CNAC2 230 V AC Connect to the earth (Connect to the outdoor controller...
  • Page 76 Outdoor noise filter circuit board PUHZ-HW112YHA2R5(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140YHA2R7(-BS) LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1: 400 V AC input LI1-NI/LI2-NI/LI3-NI: 230 V AC input (Connect to the terminal block (TB1)) Connect to the earth CNAC1, CNAC2 230 V AC (Connect to the Connect to the earth outdoor controller...
  • Page 77 Outdoor power circuit board Brief Check of DIP-IPM and DIP-PFC PUHZ-W50VHA(-BS) If they are short-circuited, it means that they are broken. Measure the resistance in the following points (connectors, etc.). PUHZ-W50VHAR1(-BS) PUHZ-W50VHAR2(-BS) 1. Check of DIP-IPM PUHZ-W50VHAR3(-BS) P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W 2.
  • Page 78 Outdoor power circuit board Brief Check of POWER MODULE If they are short-circuited, it means that they are broken. PUHZ-W85VHA(-BS) Measure the resistance in the following points (connectors, etc.). PUHZ-W85VHAR1(-BS) 1. Check of diode bridge TABP1-TABS, TABN1-TABS, TABP1-TABT, TABN1-TABT 2. Check of DIP-IPM P - U , P - V , P - W , N - U , N - V , N - W Connect to the outdoor controller circuit board (CN2)
  • Page 79 Outdoor power circuit board PUHZ-HW140VHA(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140VHA2R3(-BS) PUHZ-HW140VHA2R4(-BS) Connect to the outdoor controller circuit board (CN2) 1–5: Transmitting signal to outdoor controller circuit board (0–5 V DC) 2–5: Zero cross signal (0–5 V DC) Connect to the outdoor 3–4: 18 V DC controller circuit board (CN4) 6–5: 16 V DC...
  • Page 80 Outdoor power circuit board Brief Check of POWER MODULE PUHZ-HW140VHA2R5(-BS) If they are short-circuited, it means that they are broken. Measure the resistance in the following points (connectors, etc.). PUHZ-HW140VHA2R6(-BS) 1. Check of POWER MODULE PUHZ-HW140VHA2R7(-BS) 1 Check of DIODE circuit R - L1 , S - L1 , R - N1 , S - N1 2 Check of IGBT circuit L2 - N1...
  • Page 81 Outdoor power circuit board Brief Check of POWER MODULE If they are short-circuited, it means that they are broken. PUHZ-HW112YHA(-BS) Measure the resistance in the following points (connectors, etc.). PUHZ-HW112YHA2(-BS) 1. Check of POWER MODULE PUHZ-HW112YHA2R1(-BS) 1.Check of DIODE circuit PUHZ-HW112YHA2R3(-BS) L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1 2.Check of IGBT circuit...
  • Page 82 Outdoor power circuit board Brief Check of POWER MODULE If they are short-circuited, it means that they are broken. PUHZ-HW112YHA2R5(-BS) Measure the resistance in the following points (connectors, etc.). PUHZ-HW112YHA2R6(-BS) 1. Check of POWER MODULE PUHZ-HW140YHA2R5(-BS) 1.Check of DIODE circuit L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1 PUHZ-HW140YHA2R6(-BS) 2.Check of IGBT circuit...
  • Page 83 Outdoor converter circuit board PUHZ-HW112YHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140YHA2(-BS PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW112YHA2R3(-BS) PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140YHA2R4(-BS) L1-IN, N-IN L1-A1 CK-OU Connect to the noise filter Connect to the ACL1 Connect to the CK capacitor circuit board (LO1, NO) Connect to the outdoor power circuit board (CN7) L1-A2, L2-A2, L3-A2 L1-OU, L2-OU, L3-OU Connect to the ACL1, ACL2, ACL3...
  • Page 84 Outdoor converter circuit board PUHZ-HW112YHA2R5(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140YHA2R7(-BS) L1-IN, N-IN L1-A1 CK-OU Connect to the noise filter Connect to the ACL1 Connect to the CK capacitor circuit board (LO1, NO) Connect to the outdoor power circuit board (CN7) L1-A2, L2-A2, L3-A2 L1-OU, L2-OU, L3-OU Connect to the ACL1, ACL2, ACL3 Connect to the outdoor power circuit board (TB-L1, L2, L3)
  • Page 85 Active filter module PUHZ-W85VHA(-BS) PUHZ-W85VHAR1(-BS) Connect to the outdoor power circuit board (TABP2) L1, L2 Connect to the Non-connect DCL (Reactor) Upper Lower side side Non-connect Connect to the outdoor power circuit board (TABP1) Connect to the outdoor power circuit board (CNAF) –...
  • Page 86 9-7. OUTDOOR UNIT OPERATION MONITOR FUNCTION Operation indicator SW2: Indicator change of self-diagnosis ■ The black square ( ) indicates a switch position. Display detail Explanation for display Unit SW2 setting 2 3 4 5 6 <Digital indicator LED3 working details> (Be sure that the 1 to 6 in the SW2 are set to OFF.) 1 second (1) Display when the power supply is ON.
  • Page 87 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit Pipe temperature/Liquid (TH3) −40 to 90 −40 to 90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When −10:; 2 3 4 5 6 0.5 s 0.5 s Discharge temperature (TH4)
  • Page 88 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit Pipe temperature/Liquid (TH3) when −40 to 90 error occurred (When the coil thermistor detects 0: or below, “–” −40 to 90 and temperature are displayed by turns.) (Example) When −15:;...
  • Page 89: Setting Details

    ■ The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit Outdoor unit setting information • The tens digit (Total display for applied setting) Setting details Display details H·P/Cooling only 0: H·P 1: Cooling only Single phase/3 phase 0: Single phase 2: 3 phase Code...
  • Page 90 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit 0 to 130 Sub cool (SC) (When the SC is 100°C or more, hundreds digit, tens 0 to 130 digit and ones digit are displayed by turns.) Cooling: SC = T −TH3 °C...
  • Page 91 ■ The black square ( ) indicates a switch position. Display detail SW2 setting Explanation for display Unit When no error history, “0” and “– –“ are displayed by Error history (3) (Oldest) turns. Faulty unit number and check code are Code displayed alternately.
  • Page 92 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit Outdoor HEAT SINK temperature (TH8) −40 to 200 when error occurred. (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) −40 to 200 (When the temperature is 100°C or more, hundreds 2 3 4 5 6 digit, tens digit and ones digit are displayed by turns.)
  • Page 93 ■ The black square ( ) indicates a switch position. Explanation for display Unit SW2 setting Display detail 3 to 217 Comp. surface temperature (TH33) (When the temperature is 100: or more, the (for W50VHA(R1,R2,R3)/W85VHAR1) hundreds digit, tens digit and ones digit are Comp.
  • Page 94 OCH439M...
  • Page 95 9-8. FUNCTION OF SWITCHES PUHZ-W50VHA(-BS) PUHZ-W85VHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W85VHAR1(-BS) PUHZ-W50VHAR2(-BS) PUHZ-W50VHAR3(-BS) Switch Selection Effective timing Default Function Function details (SW1, 8)/ setting Mark No. ON (with) OFF (without) Note (SW6) Switch ON to force defrosting When compressor Manual ON to start...
  • Page 96 PUHZ-HW140VHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R4(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R5(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140YHA2R7(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140VHA2R7(-BS) Switch Selection Effective Function Default setting Function details timing Mark ON (with) OFF (without) Manual defrost ON to start usual setting Switch ON to force defrosting...
  • Page 97 9-9. Request code list Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Refer to indoor unit service manual for how to use the controllers and request codes for indoor unit. Description Request content Unit Remarks (Display range)
  • Page 98 Description Request content Unit Remarks (Display range) Outdoor unit-Control state – Refer to 9-9-1.Detail Contents in Request Code. Compressor-Frequency control state Refer to 9-9-1.Detail Contents in Request Code. – Outdoor unit-Fan control state Refer to 9-9-1.Detail Contents in Request Code. –...
  • Page 99 Description Request content Unit Remarks (Display range) Error history 1 (latest) Displays error history. (" --" is displayed if no history is present.) Code Error history 2 (second to last) Displays error history. (" --" is displayed if no history is present.) Code Error history 3 (third to last) Displays error history.
  • Page 100 9-9-1. Detail Contents in Request Code [Operation state] (Request code : "0") Relay output state Power currently Data display Display Compressor 4-way valve Solenoid valve supplied to compressor – – – – Relay output state Operation mode Operation mode Display Operation mode STOP •...
  • Page 101 [Actuator output state] (Request code : "54") Data display Actuator output state 1 Actuator output state 2 Actuator output state Actuator output state Compressor is Display 4-way valve Compressor Display warming up [Error content (U9)] (Request code : "55 ") Data display Error content 1 Error content 2...
  • Page 102 [Outdoor unit – Setting information] (Request code: "71") Setting information 1 Data display Display Defrost mode Setting information 1 Standard Setting information 2 For high humidity Setting information 2 Single-/ Heat pump/ Display cooling only 3-phase Heat pump Single-phase Cooling only Heat pump 3-phase Cooling only...
  • Page 103: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-W50VHA(-BS) PUHZ-W50VHAR1(-BS) PUHZ-W50VHAR2(-BS) PUHZ-W50VHAR3(-BS) PUHZ-W85VHA(-BS) PUHZ-W85VHAR1(-BS) PHOTO: PUHZ-W85VHA : Indicates the visible parts in the photos/fi gures. OPERATING PROCEDURE PHOTOS/FIGURES Top panel fi xing screws 1. Removing the service panel and top panel Photo 1 Top panel (1) Remove 3 screws (5 × 12) and slide the hook on the right downward to remove the service panel.
  • Page 104: Operating Procedure

    OPERATING PROCEDURE PHOTOS/FIGURES Photo 5 4. Removing the thermistor <Plate HEX Liquid> (TH6) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Thermistor (3) Disconnect the connector TH7/6 (red) on the controller Thermistor Thermistor <Plate HEX liquid>...
  • Page 105 OPERATING PROCEDURE PHOTOS/FIGURES Photo 9 8. Removing the solenoid valve coil <4-way valve> (21S4) 4-way valve 4-way valve 4-way linear expansion valve coil (LEV (A), LEV (B)) and sole- LEV-A LEV-A valve coil (21S4) valve coil (21S4) noid valve coil <Bypass valve> (SV) LEV-B (1) Remove the service panel.
  • Page 106 OPERATING PROCEDURE PHOTOS/FIGURES Photo 11 11. Removing the bypass valve (1) Remove the service panel. (See Photo 1) Solenoid 4-way valve 4-way valve LEV-A LEV-B (2) Remove the top panel. (See Photo 1) valve coil (21S4) valve coil (21S4) (3) Remove the electrical parts box. (See Photo 4) (4) Remove 3 right side panel fixing screws (5 ×...
  • Page 107 OPERATING PROCEDURE PHOTOS/FIGURES Terminal cover Photo 12 14. Removing the compressor (MC) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Lead wire for (3) Remove 2 screws (5 × 12) and remove the front cover panel. compressor (4) Remove 2 screws (5 ×...
  • Page 108 No.17 to 22 for PUHZ-W85VHA(-BS) PUHZ-W85VHAR1(-BS) OPERATING PROCEDURE PHOTOS/FIGURES Figure 1 17. Removing the controller circuit board (C.B.): Figure 1 Active fi lter module (ACTM) (1) Remove all lead wire connectors on controller circuit board (C.B.). CNF1, CNDC, CNAC, CN2, CN4, CN52C, Electrical Power circuit board (P.B.) Power circuit board (P.B.)
  • Page 109 No.23 to 27 for PUHZ-W50VHA(-BS), PUHZ-W50VHAR1(-BS), PUHZ-W50VHAR2(-BS), PUHZ-W50VHAR3(-BS) OPERATING PROCEDURE PHOTOS/FIGURES 23. Removing the controller circuit board (C.B.): Figure 3, Photo 17 Figure 3 Power circuit board (P.B.) (1) Remove all lead wire connectors on controller circuit board (C.B.). Controller circuit board (P.B.) Controller circuit board (P.B.)
  • Page 110 No.17 to 22 for PUHZ-W85VHA(-BS) PUHZ-W85VHAR1(-BS) OPERATING PROCEDURE PHOTOS/FIGURES Figure 1 17. Removing the controller circuit board (C.B.): Figure 1 Active fi lter module (ACTM) Active fi lter module (ACTM) (1) Remove all lead wire connectors on controller circuit board (C.B.). CNF1, CNDC, CNAC, CN2, CN4, CN52C, Electrical Power circuit board (P.B.) parts box...
  • Page 111 No.23 to 27 for PUHZ-W50VHA(-BS), PUHZ-W50VHAR1(-BS), PUHZ-W50VHAR2(-BS), PUHZ-W50VHAR3(-BS) OPERATING PROCEDURE PHOTOS/FIGURES 23. Removing the controller circuit board (C.B.): Figure 3, Photo 17 Figure 3 Power circuit board (P.B.) Power circuit board (P.B.) (1) Remove all lead wire connectors on controller circuit board (C.B.).
  • Page 112 PUHZ-HW112YHA(-BS) PUHZ-HW140VHA(-BS) PUHZ-HW140YHA(-BS) PUHZ-HW112YHA2(-BS) PUHZ-HW140VHA2(-BS) PUHZ-HW140YHA2(-BS) PUHZ-HW112YHA2R1(-BS) PUHZ-HW140VHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140YHA2R3(-BS) PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R4(-BS) PUHZ-HW112YHA2R5(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R5(-BS) PUHZ-HW112YHA2R6(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW140YHA2R6(-BS) PUHZ-HW112YHA2R7(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140YHA2R7(-BS) PUHZ-HW140VHA2R7(-BS) : Indicates the visible parts in the photos/fi gures. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the service panel and top panel Photo 1 Top panel fi xing screws (1) Remove 3 service panel fixing screws (5 ×...
  • Page 113 OPERATING PROCEDURE PHOTOS/FIGURES Photo 4 (PUHZ-HW112/140Y) 3. Removing the electrical parts box (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Controller circuit (3) Disconnect the indoor/outdoor connecting wire and board (C.B.) board (C.B.) board (C.B.) Noise fi lter circuit power supply wire from terminal block.
  • Page 114 OPERATING PROCEDURE PHOTOS/FIGURES 4. Disassembling the electrical parts box Photo 6 (PUHZ-HW112/140Y) Electrical (1) Disconnect all the connectors on the controller circuit board. parts box parts box (2) Remove the 3 screws, screw 1, 2 and 3, that fix the plate equipped with the outdoor controller circuit board, and the electrical parts box, screw 1 from the front and the screw 2 and 3 from the bottom of the electrical parts...
  • Page 115 Lead wire of thermistor <Ambient> (TH7) Sensor holder 4-way valve 4-way valve Low pressure Low pressure switch (63L) Thermistor <Plate HEX liquid> (TH6) High pressure Thermistor sensor (63HS) sensor (63HS) <Comp. surface> (TH34) <Comp. surface> (TH34) Stay Stay Thermistor Thermistor Compressor (MC) Compressor (MC) <Discharge>...
  • Page 116 OPERATING PROCEDURE PHOTOS/FIGURES 8. Removing the 4-way valve coil (21S4), and LEV coil (LEV-A, LEV-B, LEV-C) Photo 15 High pressure switch (63H) High pressure switch (63H) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) [Removing the 4-way valve coil] (See Photo 15) (3) Remove 4-way valve coil fixing screw (M4 ×...
  • Page 117 OPERATING PROCEDURE PHOTOS/FIGURES Photo 18 12. Removing high pressure sensor (63HS) Low pressure switch (63L) Low pressure switch (63L) Low pressure switch (63L) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the electrical parts box. (See Photo 4, 5) (4) Remove 3 valve bed fixing screws (4 ×...
  • Page 118 OPERATING PROCEDURE PHOTOS/FIGURES Photo 20 14. Removing the reactors (ACL1, ACL2, ACL3) Electrical parts box Electrical parts box (PUHZ-HW112/140Y) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the 6 screws, that fix the front panel and remove the front panel.
  • Page 119 OPERATING PROCEDURE PHOTOS/FIGURES Photo 23 15. Removing the compressor (MC) (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Compressor (MC) Compressor (MC) Compressor (MC) Terminal cover (3) Remove the electrical parts box. (See Photo 4, 5) Pipes of power receiver (4) Remove 3 valve bed fixing screws (4 ×...
  • Page 120 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2008 MITSUBISHI ELECTRIC CORPORATION Issued: Apr. 2019 No. OCH439 REVISED EDITION-M Issued: Dec. 2017 No. OCH439 REVISED EDITION-L Issued: Jul. 2015 No. OCH439 REVISED EDITION-K Issued: Nov. 2014 No. OCH439 REVISED EDITION-J Issued: Aug. 2012 No. OCH439 REVISED EDITION-H Issued: Jan. 2012 No. OCH439 REVISED EDITION-G Issued: Dec.