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Mitsubishi Electric MXZ-2HA50VF2-E1 User Manual

Mitsubishi Electric MXZ-2HA50VF2-E1
81 pages
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Models
MXZ-2HA40VF
-
E1
,
ET1
,
ER1
,
E2
MXZ-2HA40VF2
-
E1
,
ET1
MXZ-2HA50VF
-
E1
,
ET1
,
ER1
,
E2
MXZ-2HA50VF2
-
E1
,
ET1
MXZ-3HA50VF
-
E1
,
ET1
,
ER1
,
E2
,
ET2
,
ER2
,
E3
MXZ-3HA50VF2
-
E1
,
ET1
HFC
utilized
R32
SERVICE MANUAL
OUTDOOR UNIT
PARTS CATALOG (OBB828)
Indoor unit service manual
MSZ-HR•VF Series (OBH822)
CONTENTS
1. TECHNICAL CHANGES ······························3
2. SAFETY PRECAUTION ······························· 3
3. PART NAMES AND FUNCTIONS ················13
4. SPECIFICATION ······································ 14
5. NOISE CRITERIA CURVES ························20
6. OUTLINES AND DIMENSIONS ··················· 21
7. WIRING DIAGRAM ··································· 23
8. REFRIGERANT SYSTEM DIAGRAM ··········· 31
9. PERFORMANCE CURVES ························34
10. ACTUATOR CONTROL ····························· 43
11. SERVICE FUNCTIONS ······························ 44
12. TROUBLESHOOTING ······························· 48
13. DISASSEMBLY INSTRUCTIONS ·················74
MXZ-2HA40VF
MXZ-2HA40VF2
MXZ-2HA50VF
MXZ-2HA50VF2
No. OBH828
REVISED EDITION-D
OBH828 REVISED EDITION-C is void.
Revision D:
• MXZ-2HA40VF2 -
E1
,
ET1
,
MXZ-2HA50VF2 -
E1
,
ET1
and MXZ-3HA50VF2 -
E1
,
ET1
have been added.
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Mitsubishi Electric MXZ-2HA50VF2-E1 Specifications

General IconGeneral
Cooling Capacity5.0 kW
Power Supply220-240 V, 50 Hz
RefrigerantR32
Number of Connectable Indoor Units2
TypeSplit System
SeriesMXZ

Summary

Outdoor Unit Service Manual

2. SAFETY PRECAUTION

Cautions for unit using R32 refrigerant

[1] Warning for service

[4] Cautions for unit using R32 refrigerant

Servicing and Repair Procedures

Guidelines and checks related to servicing and repairing components.

2-4. CHOOSING THE OUTDOOR UNIT INSTALLATION LOCATION

2-5. MINIMUM INSTALLATION AREA

3. PART NAMES AND FUNCTIONS

4. SPECIFICATION

Model Specifications Overview

Detailed technical specifications for all listed outdoor unit models.

5. NOISE CRITERIA CURVES

6. OUTLINES AND DIMENSIONS

7. WIRING DIAGRAM

2-Port Model Wiring Diagram and Symbols

Electrical wiring diagram for specific 2-port outdoor unit models, including symbols.

3-Port Model Wiring Diagram and Symbols

8. REFRIGERANT SYSTEM DIAGRAM

2-Port Model Refrigerant System and Piping

Illustrates the refrigerant flow, components, and piping for 2-port models.

3-Port Model Refrigerant System and Piping

PUMPING DOWN

9. PERFORMANCE CURVES

9-1. CAPACITY AND THE INPUT CURVES

9-2. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY

9-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT CURVE (single operation)

10. ACTUATOR CONTROL

11. SERVICE FUNCTIONS

Locking Operation Mode (Cool/Dry/Heat)

Function to lock the unit to a specific operation mode.

11-3. LOWERING THE OPERATING NOISE OF THE OUTDOOR UNIT

11-4. AUTOMATIC LINE CORRECTING

Wiring/Piping Detection and Correction Function

Function to detect and correct wiring or piping errors.

12. TROUBLESHOOTING

12-1. CAUTIONS ON TROUBLESHOOTING

Important precautions before performing troubleshooting.

Troubleshooting Procedure Overview

General steps for troubleshooting unit issues.

12-2. FAILURE MODE RECALL FUNCTION

How to recall and interpret past failure information.

2. Flow chart of the detailed outdoor unit failure mode recall function

3. Table of outdoor unit failure mode recall function

Failure Codes, Conditions, and Remedies Table

Lists failure codes, conditions, and remedies.

12-3. INSTRUCTION OF TROUBLESHOOTING

12-4. TROUBLESHOOTING CHECK TABLE

Symptom, Indication, Condition, and Remedy Details

Detailed table of symptoms, LED indications, conditions, and remedies.

12-5. TROUBLESHOOTING CRITERION OF MAIN PARTS

Main Part Measurement Criteria

Resistance and pressure criteria for checking main parts.

12-6. TROUBLESHOOTING FLOW

Outdoor Unit Does Not Operate Troubleshooting

Troubleshooting steps when the outdoor unit is not operating.

How to check miswiring and serial signal error (when outdoor unit does not work)

Checking Miswiring and Signal Errors

Procedure to check for wiring and signal errors.

Check of LEV

How to check inverter/compressor

Compressor Output and Winding Checks

Steps to check compressor output voltage and winding resistance.

Check of outdoor thermistors

Thermistor Resistance and Board Checks

Table and procedure for checking thermistor resistance and related boards.

Check of outdoor fan motor

Fan Motor Resistance and Voltage Checks

Procedures to check outdoor fan motor resistance and voltage.

MXZ-3HA50VF / MXZ-3HA50VF2 Outdoor Fan Motor Checks

Check of outdoor refrigerant circuit

12-7. TEST POINT DIAGRAM AND VOLTAGE

1. Inverter P.C. board Test Points and Voltage

Diagram showing test points and voltage values on the inverter P.C. board.

2-Port Model Inverter P.C. board Test Points

2. Outdoor control P.C. board

3. Outdoor power P.C. board

13. DISASSEMBLY INSTRUCTIONS

13-1. Disassembly Procedure for 2-Port Models

Steps for removing cabinet and panels.

OPERATING PROCEDURE

2. Removing the Outdoor Control P.C. Board, Power P.C. Board, and Reactor

Steps to remove control board, power board, and reactor.

5. Removing the Expansion Valve

Steps to remove the expansion valve.

4. Removing the Compressor and 4-Way Valve

Steps to remove the compressor and 4-way valve.

5. Removing the outdoor fan motor

6. Removing the compressor and the 4-way valve

Compressor and 4-Way Valve Removal

Steps for removing the compressor and 4-way valve.

13-2. MXZ-3HA50VF / MXZ-3HA50VF2 Disassembly

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