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Mitsubishi Electric Mr Slim PUHZ-RP50VHA4 User Manual

Mitsubishi Electric Mr Slim PUHZ-RP50VHA4
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SERVICE MANUAL
No.OCH451
REVISED EDITION-D
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
May 2013
Outdoor unit
[Model name]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP125YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP250YKA
[Service Ref.]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP125YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP200YKAR1
PUHZ-RP250YKA
PUHZ-RP60VHA4
PUHZ-RP71VHA4
Revision:
PUHZ-RP60/71VHA4R4 and
PUHZ-RP100/125YKAR4
have been deleted in
REVISED EDITION-D.
Some descriptions have
been modified.
PARTS CATALOG (OCB451)
CONTENTS
1. TECHNICAL CHANGE ··································· 2
2. REFERENCE MANUAL ································· 2
3. SAFETY PRECAUTION ································· 3
4. FEATURES ·····················································7
5. SPECIFICATIONS ··········································8
6. DATA ····························································· 11
7. OUTLINES AND DIMENSIONS ··················· 17
8. WIRING DIAGRAM ······································ 21
9. WIRING SPECIFICATIONS ·························· 27
10.
REFRIGERANT SYSTEM DIAGRAM
·············32
11. TROUBLESHOOTING·································· 36
12. FUNCTION SETTING ································· 101
13. MONITORING THE OPERATION DATA
BY THE REMOTE CONTROLLER ··············114
14. EASY MAINTENANCE FUNCTION ··········· 125
15. DISASSEMBLY PROCEDURE ·················· 131
Note:
This manual describes only
service data of the outdoor
units.
RoHS compliant products
have <G> mark on the spec
name plate.
Please void OCH451
REVISED EDITION-C.
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Mitsubishi Electric Mr Slim PUHZ-RP50VHA4 Specifications

General IconGeneral
SeriesMr Slim
TypeHeat Pump
Cooling Capacity5.0 kW
Heating Capacity6.0 kW
Power Supply220-240 V, 50 Hz
RefrigerantR410A
Outdoor Unit Noise Level50 dB(A)
Outdoor Unit Dimensions (WxHxD)800 x 550 x 285 mm
Indoor Unit Weight10 kg

Summary

Technical Change

REFERENCE MANUAL

Lists service manuals for various indoor units.

SAFETY PRECAUTION

ALWAYS OBSERVE FOR SAFETY

General safety rules before accessing terminals.

CAUTIONS RELATED TO NEW REFRIGERANT

Specific safety precautions for R410A refrigerant.

PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES

Cautions for refrigerant piping work

FEATURES

CHARGELESS SYSTEM

Pre-charged refrigerant system for easier installation.

REFRIGERANT LEAKAGE DETECTION FUNCTION

Function to detect refrigerant leaks over time.

SPECIFICATIONS

DATA

REFILLING REFRIGERANT CHARGE

Table for refrigerant charge amounts based on piping length.

ADJUSTING THE AMOUNT OF REFRIGERANT

Procedure for adjusting refrigerant charge for specific models.

COMPRESSOR TECHNICAL DATA

Technical data for compressors, including winding resistance.

NOISE CRITERION CURVES

STANDARD OPERATION DATA

OUTLINES AND DIMENSIONS

Free space around the outdoor unit (basic example)

Guidelines for installation space around the outdoor unit.

Minimum installation space for outdoor unit

Specific minimum clearances for installation.

WIRING DIAGRAM

SYMBOL NAME

Table listing symbols and their corresponding names.

M-NET ADAPTER

Diagram and table for M-NET adapter connections and indicators.

WIRING SPECIFICATIONS

FIELD ELECTRICAL WIRING (power wiring specifications)

Table detailing power wiring specifications for different models.

1:1 system Electrical wiring

Wiring diagram for 1:1 system single and synchronized twin/triple.

SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

1:1 System (Indoor : PEA-200, 250)

Wiring patterns for 1:1 system with separate power supplies.

1:2 System (Indoor : PEA-400, 500)

Wiring patterns for 1:2 system with separate power supplies.

INDOOR – OUTDOOR CONNECTING CABLE

M-NET WIRING METHOD

(Points to note)

Important notes regarding M-NET wiring to prevent noise interference.

M-NET address setting

Refrigerant address setting

Regulations in address settings

REFRIGERANT SYSTEM DIAGRAM

REFRIGERANT COLLECTING (PUMP DOWN)

START AND FINISH OF TEST RUN

TROUBLESHOOTING

TROUBLESHOOTING

Summary of error code display and troubleshooting actions.

CHECK POINT UNDER TEST RUN

Pre-run checks before performing a test run.

Test run for wired remote controller <PAR-31MAA>

Error information

Checking the error information

Error history

Steps to select and view error history records.

Deleting the error history

Procedure to delete error history records.

Test run for wired remote controller <PAR-21MAA>

Test run for wireless remote controller

HOW TO PROCEED "SELF-DIAGNOSIS"

Self-diagnosis <PAR-31MAA>

Steps to perform self-diagnosis using the remote controller.

Self-diagnosis <PAR-21MA>

Self-diagnosis during maintenance or service

Remote Controller Diagnosis

Self-diagnosis <wireless remote controller>

[Output pattern A] Errors detected by indoor unit

Errors detected by unit other than indoor unit (outdoor unit, etc.)

SELF-DIAGNOSIS ACTION TABLE

<Abnormalities detected when the power is put on>

Action table for abnormalities detected upon power-up.

M-NET communication error

TROUBLESHOOTING OF PROBLEMS

Phenomena

Table of common phenomena and their countermeasures.

Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.

Symptoms: Nothing is displayed on the remote controller

<Before repair>

Frequent calling from customers

Common customer inquiries and how to respond.

HOW TO CHECK THE PARTS

Thermistor feature chart

Charts showing thermistor resistance values at different temperatures.

Check method of DC fan motor (fan motor / outdoor controller circuit board)

HOW TO CHECK THE COMPONENTS

Thermistor feature chart

Detailed resistance charts for various thermistors.

Linear expansion valve (RP35-RP71)

Operation summary of the linear expansion valve

Explanation of the linear expansion valve's operation and connection.

Linear expansion valve (RP100-RP250)

How to attach and detach the coil of linear expansion valve (RP35-RP71 )

How to attach and detach the coil of linear expansion valve (RP100-RP250)

EMERGENCY OPERATION

When the error codes shown below are displayed...

Conditions under which emergency operation is available.

Emergency operation procedure

Step-by-step guide to perform emergency operation.

Operation data during emergency operation

TEST POINT DIAGRAM

Outdoor controller circuit board

Diagram of the outdoor controller board with test points labeled.

Outdoor noise filter circuit board PUHZ-RP35VHA4 PUHZ-RP50VHA4

Outdoor noise filter circuit board PUHZ-RP60VHA4 PUHZ-RP71VHA4

Outdoor noise filter circuit board PUHZ-RP100YKA...PUHZ-RP250YKA

Outdoor power circuit board PUHZ-RP35VHA4...PUHZ-RP71VHA4

Outdoor power circuit board PUHZ-RP100YKA...PUHZ-RP250YKA

Outdoor converter circuit board PUHZ-RP100YKA...PUHZ-RP140YKA

FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

Function of switches

Table detailing the functions of DIP and push switches.

Function of connector

Display function of inspection for outdoor unit

Outdoor unit operation monitor function

FUNCTION SETTING

UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

How to set unit functions using the wired remote controller.

Table 1 Function selections

Table of available functions and their settings.

Selecting functions using the wired remote controller <PAR-31MAA>

Selecting functions using the wired remote controller

Operating Procedure

Selecting functions using the wireless remote controller (Type C)

FUNCTION SELECTION OF REMOTE CONTROLLER

PAR-31MAA

Guide to using the PAR-31MAA remote controller's function buttons.

Menu structure of PAR-31MAA

Main menu list of PAR-31MAA

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

HOW TO "MONITOR THE OPERATION DATA"

Procedure to monitor operation data using the remote controller.

PAR-31MAA

Specific steps for monitoring data with the PAR-31MAA remote controller.

REQUEST CODE LIST

Detail Contents in Request Code

EASY MAINTENANCE FUNCTION

SMOOTH MAINTENANCE

Procedure for smooth maintenance checks and data display.

PAR-31MAA

Steps for smooth maintenance using the PAR-31MAA remote controller.

MAINTENANCE MODE OPERATION METHOD

Switching to maintenance mode

How to switch to maintenance mode from operation or stop states.

Fixed Hz operation

Procedure for fixing operating frequency for stable inspection.

GUIDE FOR OPERATION CONDITION

INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION (except RP200/250)

How to select the "Refrigerant Leakage Detection" mode

Steps to select the refrigerant leakage detection mode.

How to start the initial learning

Procedure to start the initial learning for refrigerant leakage detection.

How to start "Judgment of refrigerant leakage " mode.

DISASSEMBLY PROCEDURE

Removing the fan motor (MF1)

Procedure for removing the fan motor.

Removing the electrical parts box

Removing the thermistor <Outdoor 2-phase pipe> (TH6)

Procedure for removing the outdoor 2-phase pipe thermistor.

Removing the thermistor <Ambient> (TH7)

Procedure for removing the ambient thermistor.

Removing the thermistor <Liquid> (TH3), thermistor <Ref. check> (TH33), thermistor <Discharge> (TH4) and thermistor <Comp. surface> (TH32)

Removing the 4-way valve coil (21S4), LEV coil (LEV(A), LEV(B))

Removing the 4-way valve

Removing the LEV

Removing the high pressure switch (63H) (63H1) (63H2)

Removing the compressor (MC)

Removing the power receiver

Removing the service panel and top panel

Removing the fan motor (MF1, MF2)

Removing the electrical parts box

Disassembling the electrical parts box

Removing the thermistor <Outdoor 2-phase pipe> (TH6)

Removing the thermistor <Ambient> (TH7)

Removing the thermistor <Liquid> (TH3), thermistor <Ref. check> (TH33), thermistor <Discharge> (TH4) and thermistor <Comp. surface> (TH32)

Removing the 4-way valve coil (21S4), LEV coil (LEV(A), LEV(B))

Removing the 4-way valve

Removing the LEV

Removing the reactors (ACL1, ACL2, ACL3)

Removing the compressor (MC)

Removing the power receiver

Removing the service panel and top panel

Removing the fan motor (MF1, MF2)

Removing the electrical parts box

Removing the thermistor <Outdoor 2-phase pipe> (TH6)

Removing the thermistor <Ambient> (TH7)

Removing the thermistor <Liquid> (TH3), thermistor <Ref. check> (TH33), thermistor <Discharge> (TH4) and thermistor <Comp. surface> (TH32)

Removing the 4-way valve coil (21S4), LEV coil (LEV(A), LEV(B))

Removing the 4-way valve

Removing the LEV

Removing the high pressure switch (63H) (63H1) (63H2)

Removing the compressor (MC)

Removing the power receiver

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