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Mitsubishi Electric MXZ-3C30NAHZ User Manual

Mitsubishi Electric MXZ-3C30NAHZ
154 pages
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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

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Mitsubishi Electric MXZ-3C30NAHZ Specifications

General IconGeneral
SeriesMXZ
Cooling Capacity (BTU)30, 000
Energy Efficiency Ratio (EER)11.5
HSPF10.0
RefrigerantR410A
Number of Zones3
Voltage208/230V
Phase1
Compressor TypeInverter
Indoor Unit Dimensions (HxWxD)Varies by model
Indoor Unit WeightVaries by model
Operating Temperature (Cooling)14°F to 115°F
TypeHeat Pump
Heating Capacity (BTU)36000
Indoor Unit CompatibilityMSZ

Summary

Technical Changes

Safety Precautions

Always Observe for Safety

General safety rules for maintenance and repair procedures.

Cautions Related to R410A Refrigerant

Specific safety measures and precautions for handling R410A refrigerant.

Cautions for Refrigerant Piping Work

Precautions for safe and correct refrigerant piping installation and dimensions.

Part Names and Functions

Specifications

Operating Range

Defines the operational limits for cooling and heating based on air temperatures.

Refrigerant Piping Length and Size Selection

Details maximum refrigerant pipe lengths and size requirements for different configurations.

Noise Criteria Curves

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Data

Operating Range and Power Supply

Specifies operational ranges and power supply requirements for various models.

Capacity and Input Correction Curves

Provides graphical data for capacity and input corrections based on operating conditions.

Actuator Control

Service Functions

Pre-Heat Control

Describes the pre-heat function to prevent compressor damage from refrigerant liquefaction.

Auto Line Correcting

Explains the automatic detection and correction of wiring or piping errors.

Changing Set Refrigerant Evaporating Temperature

Instructions on how to adjust the refrigerant evaporating temperature settings.

Troubleshooting

Cautions on Troubleshooting

Important safety precautions and checks to perform before troubleshooting.

Failure Mode Recall Function

How to recall and interpret stored failure codes from the unit's memory.

Troubleshooting Check Table

A detailed table listing symptoms, abnormal points, conditions, and remedies for troubleshooting.

Troubleshooting Criterion of Main Parts

Criteria for checking the condition of major components like thermistors, compressor, and fan motor.

Disassembly Instructions

Removing the Cabinet and Panels

Step-by-step guide to removing the outer cabinet and various panels.

Removing the Outdoor Control P.C. Board, Reactor, etc.

Instructions for safely removing electronic boards, reactors, and other internal components.

Removing the Fan Motor

Procedure for removing the fan motor, including propeller fan and nut details.

Removing the Compressor and 4-way Valve

Steps for removing the compressor and the 4-way valve, including refrigerant recovery.

Removing the Expansion Valve

Guide for removing the expansion valve, including LEV coils and brazed pipe connections.

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