Mitsubishi Electric PUHZ-RP140YHA2 User Manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. REFERENCE MANUAL··································2
2. SAFETY PRECAUTION··································3
3. FEATURES ·····················································7
4. SPECIFICATIONS···········································8
5. DATA ·····························································10
6. OUTLINES AND DIMENSIONS····················15
7. WIRING DIAGRAM·······································18
8. WIRING SPECIFICATIONS ··························21
9. REFRIGERANT SYSTEM DIAGRAM ··············26
10. TROUBLESHOOTING ··································29
11. FUNCTION SETTING····································86
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ············92
13. EASY MAINTENANCE FUNCTION············102
14. DISASSEMBLY PROCEDURE ···················107
15. PARTS LIST ················································129
16. RoHS PARTS LIST ·····································140
No.OC374
REVISED EDITION-A
R410A
July 2006
Outdoor unit
[model names]
PUHZ-RP35VHA2
PUHZ-RP50VHA2
PUHZ-RP60VHA2
PUHZ-RP71VHA2
PUHZ-RP100VHA2
PUHZ-RP125VHA2
PUHZ-RP140VHA2
PUHZ-RP100YHA2
PUHZ-RP125YHA2
PUHZ-RP140YHA2
[Service Ref.]
PUHZ-RP35VHA2
PUHZ-RP50VHA2
PUHZ-RP60VHA2
PUHZ-RP71VHA2
PUHZ-RP100VHA2
PUHZ-RP125VHA2
PUHZ-RP140VHA2
PUHZ-RP100YHA2
PUHZ-RP125YHA2
PUHZ-RP140YHA2
PUHZ-RP60VHA2
PUHZ-RP71VHA2
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
• For servicing of RoHS compli-
ant products, refer to the RoHS
PARTS LIST.
Revision:
• RoHS PARTS LIST is added.
• Some descriptions have been
modified.
• Please void OC374.
OC374A--1.qxp 06.7.26 5:07 PM Page 1

Mitsubishi Electric PUHZ-RP140YHA2 Specifications

General

Cooling Capacity	14.0 kW
Heating Capacity	16.0 kW
Refrigerant	R410A
Energy Efficiency Class	A++
Power Supply	380-415V, 50Hz
Coefficient of Performance (Heating)	4.0
Operating Temperature Range (Cooling)	46°C
Operating Temperature Range (Heating)	-15 to 21°C
Dimensions (Outdoor Unit)	330 x 950 mm

Summary

1 REFERENCE MANUAL

1-1. INDOOR UNIT SERVICE MANUAL

References to service manuals for indoor units, including model names and service reference numbers.

1-2. TECHNICAL DATA BOOK

Manual number for the technical data book.

2 SAFETY PRECAUTION

2-1. CAUTIONS RELATED TO NEW REFRIGERANT

Specific safety guidelines for using refrigerant R410A, covering piping, tools, and handling procedures.

2-2. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES

Procedures and precautions for reusing R22 refrigerant pipes with new air conditioners.

3 FEATURES

CHARGELESS SYSTEM

Description of the pre-charged refrigerant system for simplified installation and improved quality.

REFRIGERANT LEAKAGE DETECTION FUNCTION

Details on the unit's capability to detect refrigerant leakage over time.

4 SPECIFICATIONS

SPECIFICATIONS

Detailed technical specifications for outdoor units, including electrical, refrigerant, and dimension data.

5 DATA

5-1. REFILLING REFRIGERANT CHARGE (R410A : kg)

Table showing refrigerant charge amounts based on piping length for various models.

5-2. COMPRESSOR TECHNICAL DATA

Technical data for compressors, including winding resistance at 20°C.

6 OUTLINES AND DIMENSIONS

Free space around the outdoor unit (basic example)

Diagram illustrating minimum installation clearances for the outdoor unit.

7 WIRING DIAGRAM

WIRING DIAGRAM

Electrical wiring diagrams for various outdoor unit models, including component symbols and names.

8 WIRING SPECIFICATIONS

8-1. FIELD ELECTRICAL WIRING (power wiring specifications)

Specifications for field electrical wiring, including circuit ratings and wire sizes for power supply.

8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

Configuration options for separate power supplies for indoor and outdoor units.

9 REFRIGERANT SYSTEM DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

Diagrams illustrating the refrigerant flow for cooling and heating modes for different unit series.

10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

Summary of actions for service based on error code display and phenomenon recurrence.

10-2. CHECK POINT UNDER TEST RUN

Key checks to perform before starting a test run to ensure proper installation and safety.

10-3. HOW TO PRECEED "SELF-DIAGNOSIS"

Procedure for accessing and interpreting self-diagnosis results for troubleshooting.

10-4. SELF-DIAGNOSIS ACTION TABLE

Table detailing error codes, their meanings, cases, and recommended actions for diagnosis.

10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA

Troubleshooting guide for common operational issues and their potential causes and countermeasures.

Phone Calls From Customers

Unit does not operate at all.

Troubleshooting steps for when the unit fails to start or operate, including remote controller and power checks.

The room cannot be cooled or heated sufficiently.

Guidance for insufficient cooling or heating, checking temperature settings, filters, and airflow.

10-6. HOW TO CHECK THE PARTS

10-7. HOW TO CHECK THE COMPONENTS

Instructions on checking components like thermistors, motors, and valves by measuring resistance.

Linear expansion valve (RP35-RP71)

(1) Operation summary of the linear expansion valve.

Overview of the linear expansion valve's operation, pulse signals, and connection.

Linear expansion valve (RP100-RP140)

(1) Operation summary of the linear expansion valve.

Overview of the linear expansion valve's operation, pulse signals, and connection for higher capacity models.

10-8. EMERGENCY OPERATION

2 Check the following items and cautions for emergency operation

Items to check and important cautions before initiating emergency operation.

3 Emergency operation procedure

Step-by-step guide to activate and set the emergency operation mode.

10-9. TEST POINT DIAGRAM

Outdoor controller circuit board

Diagram showing test points on the outdoor controller circuit board for troubleshooting.

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

Description of the functions of DIP switches (SW1, SW4, SW5, SW7, SW8, SW9) and push switch (SWP).

(2) Function of connectors and switches

Explanation of connectors (CN31, CNF1, CNF2, etc.) and their functions.

11 FUNCTION SETTING

11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Guide for setting unit functions using the wired remote controller, including mode and setting selections.

11-1-1. Selecting functions using the wired remote controller

Step-by-step procedure for selecting functions via the wired remote controller.

11-1-2. Selecting functions using the wireless remote controller (Type C)

Procedure for selecting functions using the wireless remote controller, including mode and setting adjustments.

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER

Explanation of remote controller functions like language, operation limits, mode selection, and display settings.

12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

12-1. HOW TO "MONITOR THE OPERATION DATA"

Instructions on how to access and view operation data using the remote controller's maintenance mode.

12-2. REQUEST CODE LIST

List of request codes for monitoring operation data, including descriptions and units.

13 EASY MAINTENANCE FUNCTION

13-1. MAINTENANCE MODE OPERATION METHOD

Method for activating and operating the maintenance mode for checking unit data.

13-2. GUIDE FOR OPERATION CONDITION

Guide for checking operation conditions by plotting temperature differences on a graph.

13-3 INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION

1.How to select the "Refrigerant Leakage Detection" mode

Steps to select the refrigerant leakage detection mode and initiate the initial learning process.

2.How to start the initial learning

Procedure to start the initial learning process for refrigerant leakage detection.

14 DISASSEMBLY PROCEDURE

1. Removing the top panel, service panel, front panel and back panel

Procedure for removing the outer panels of the unit to access internal components.

2. Removing the fan motor

Steps for safely removing the fan motor, including disconnecting wiring and removing the propeller.

3. Removing the electrical parts box

Procedure for removing the electrical parts box, including disconnecting connectors and wiring.

4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) and thermistor <Outdoor pipe> (TH3) (TH33)

Steps for removing outdoor pipe and discharge thermistors.

12. Removing the reactor (DCL) and capacitor (CE)

Steps for removing the reactor and capacitor, noting their weight and mounting.

13. Removing the motor for compressor (MC)

Procedure for removing the compressor motor, including refrigerant collection and pipe disconnection.

14. Removing the power receiver

Steps to remove the power receiver, including refrigerant collection and pipe disconnection.

15 PARTS LIST (non-RoHS compliant)

STRUCTURAL PARTS

List of structural parts for PUHZ-RP35VHA2 and PUHZ-RP50VHA2 models, including part numbers and names.

FUNCTIONAL PARTS

Diagram and list of functional parts for PUHZ-RP60VHA2 and PUHZ-RP71VHA2 models.

16 RoHS PARTS LIST

FUNCTIONAL PARTS

List of RoHS compliant functional parts for PUHZ-RP35VHA2 and PUHZ-RP50VHA2 models.