Mitsubishi Electric MXZ-3C30NAHZ3 User Manual

PARTS CATALOG (OBB702)
SERVICE MANUAL
OUTDOOR UNIT
Models
MXZ-2C20NA2 -
U1
,
U4
MXZ-2C20NAHZ
MXZ-2C20NA3
-
U1
MXZ-2C20NAHZ2 -
U1
MXZ-2C20NA4 -
U1
MXZ-2C20NAHZ3 -
U1
MXZ-3C24NA MXZ-2C20NAHZ4 -
U1
MXZ-3C24NA2 -
U1
MXZ-3C24NAHZ
MXZ-3C24NA3
-
U1
MXZ-3C24NAHZ2 -
U1
MXZ-3C24NA4 -
U1
MXZ-3C24NAHZ3 -
U1
MXZ-3C30NA MXZ-3C24NAHZ4 -
U1
MXZ-3C30NA2 -
U1
MXZ-3C30NAHZ
MXZ-3C30NA3
-
U1
MXZ-3C30NAHZ2 -
U1
MXZ-3C30NA4 -
U1
MXZ-3C30NAHZ3 -
U1
MXZ-4C36NA MXZ-3C30NAHZ4 -
U1
MXZ-4C36NA2 -
U1
MXZ-4C36NA3 -
U1
MXZ-4C36NA4 -
U1
MXZ-5C42NA
MXZ-5C42NA2
-
U1
MXZ-5C42NA3 -
U1
MXZ-5C42NA4 -
U1
No. OBH702
REVISED EDITION-N
Indoor unit service manual
MSZ-FE·NA Series (OBH542)
MSZ-FH·NA Series (OBH683)
MSZ-GE·NA Series (OBH548)
MSZ-GL·NA Series (OBH732)
MSZ-EF·NA Series (OBH736)
MSZ-FS·NA Series (OBH872)
MFZ-KA·NA Series (OBH568)
MFZ-KJ·NA Series (OBH752)
SLZ-KA·NA Series (OCH487)
SLZ-KF·NA.TH Series (OCH669)
PLA-A·BA Series (OCH420)
PLA-A·EA Series (OCH640)
SEZ-KD·NA Series
PEAD-A·AA Series
PCA-A·KA Series (OCH455)
MVZ-A·AA Series
SVZ-KP·NA Series (MD-1404-K019)
CONTENTS
• INDOOR / OUTDOOR UNIT
COMPATIBILITY TABLE ······················4
1. TECHNICAL CHANGES ······························8
2. SAFETY PRECAUTION ·······························9
3. PART NAMES AND FUNCTIONS ················13
4. SPECIFICATION ······································ 14
5. NOISE CRITERIA CURVES ························30
6. OUTLINES AND DIMENSIONS ··················· 33
7. WIRING DIAGRAM ··································· 39
8. REFRIGERANT SYSTEM DIAGRAM ··········· 62
9. DATA ······················································ 75
10. ACTUATOR CONTROL ··························· 106
11. SERVICE FUNCTIONS ···························· 107
12. TROUBLESHOOTING ······························110
13. DISASSEMBLY INSTRUCTIONS ··············· 141
HFC
utilized
R410A
Revision N:
• 4. SPECIFICATION and 8. REFRIGERANT
SYSTEM DIAGRAM have been corrected.
OBH702 REVISED EDITION-M is void.
MXZ-3C24NA MXZ-3C30NA MXZ-4C36NA
MXZ-3C24NA2 MXZ-3C30NA2 MXZ-4C36NA2
MXZ-3C24NA3 MXZ-3C30NA3 MXZ-4C36NA3
MXZ-3C24NA4 MXZ-3C30NA4 MXZ-4C36NA4

Mitsubishi Electric MXZ-3C30NAHZ3 Specifications

General

Outdoor Unit Model	MXZ-3C30NAHZ3
Cooling Capacity	30, 000 BTU/h
Refrigerant	R410A
Type	Multi-Zone
Voltage	208/230V
Phase	Single
Compressor Type	Inverter
Power Supply	208/230V, 1 Phase, 60Hz
Indoor Unit Noise Level	Varies depending on indoor unit type
Indoor Unit Dimensions (HxWxD)	Varies depending on indoor unit type
Indoor Unit Weight	Varies depending on indoor unit type

Summary

Safety and Refrigerant Handling

Use Specified Refrigerant Only

Never use refrigerants other than specified; doing so can cause hazards.

Preparation and Precautions for Repair Service

Cautions Related to R410A Refrigerant

Specific safety guidelines and procedures for handling R410A refrigerant.

Cautions for Refrigerant Piping Work

Operational Control and Troubleshooting

11 SERVICE FUNCTIONS

Explains various service functions like pre-heat and auto-line correcting.

11-1. PRE-HEAT CONTROL

11-2. AUTO LINE CORRECTING

Automatic detection and correction of wiring or piping errors.

12 TROUBLESHOOTING

Guidance on diagnosing and resolving unit abnormalities and failures.

12-1. CAUTIONS ON TROUBLESHOOTING

General safety and preliminary checks before troubleshooting.

12-2. FAILURE MODE RECALL FUNCTION

Method for recalling and interpreting stored failure codes.

12-3. INSTRUCTION OF TROUBLESHOOTING

Step-by-step flowchart for diagnosing outdoor unit issues.

12-4. TROUBLESHOOTING CHECK TABLE

Table listing symptoms, causes, and remedies for common failures.

12-5. TROUBLESHOOTING CRITERION OF MAIN PARTS

12-6. TROUBLESHOOTING FLOW

12-7. TEST POINT DIAGRAM AND VOLTAGE

1. Outdoor control P.C. board

2. Outdoor power P.C. board