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Mitsubishi Electric MUZ-GE09NA User Manual

Mitsubishi Electric MUZ-GE09NA
74 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. OUTLINES AND DIMENSIONS ······················ 10
5. WIRING DIAGRAM ·········································· 13
6. REFRIGERANT SYSTEM DIAGRAM ············· 25
7. DATA ································································ 28
8. ACTUATOR CONTROL ··································· 42
9. SERVICE FUNCTIONS ··································· 43
10. TROUBLESHOOTING ····································· 44
11. DISASSEMBLY INSTRUCTIONS ···················· 64
Models
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•NA MSY-GE•NA Series (OBH548)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
No. OBH549
REVISED EDITION-F
PARTS CATALOG (OBB549)
Please void OBH549 REVISED EDITION-E.
MUZ-GE09NA/NA2
MUZ-GE12NA/NA2
MUZ-GE15NA, -
1
/NA2
MUZ-GE09NA
MUZ-GE09NA2
MUZ-GE12NA
MUZ-GE12NA2
MUZ-GE15NA,
-
1
MUZ-GE15NA2
MUZ-GE18NA,
-
1
MUZ-GE24NA
Revision F:
• MUZ-GE09/12/15NA2, MUZ-GE09/12/15NAH2
and MUY-GE09/12/15NA2 have been added.
MUZ-GE09NAH
MUZ-GE09NAH2
MUZ-GE12NAH
MUZ-GE12NAH2
MUZ-GE15NAH
MUZ-GE15NAH2
MUZ-GE18NAH
MUY-GE09NA/NA2
MUY-GE12NA/NA2
MUY-GE15NA, -
1
/NA2
TM
MUY-GE18NA,
-
1
MUY-GE24NA
MUY-GE09NA
MUY-GE09NA2
MUY-GE12NA
MUY-GE12NA2
MUY-GE15NA,
-
1
MUY-GE15NA2
MUZ-GE09NAH/NAH2
MUZ-GE12NAH/NAH2
MUZ-GE15NAH/NAH2

Table of Contents

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Mitsubishi Electric MUZ-GE09NA Specifications

General IconGeneral
Cooling Capacity9, 000 BTU/h
Heating Capacity10, 000 BTU/h
Energy Efficiency Ratio (EER)12.1
HSPF10.0
HSPF Rating10.0
RefrigerantR410A
Operating Temperature (Cooling)14°F to 115°F
Power Supply208/230V, 1Ph, 60Hz
Voltage230V

Summary

Technical Changes

Model and Component Revision Details

Details model additions and component updates across different revisions of the manual.

Part Names and Functions

Outdoor Unit External Parts Identification

Identifies external components of the outdoor unit with diagrams and labels.

Specifications

Unit Performance Specifications

Detailed specifications including capacity, power, EER, dimensions, and refrigerant charge.

Operating Range and Conditions

Covers power supply details and operating conditions for cooling and heating modes.

Outlines and Dimensions

Dimension Diagrams for MUZ-GE09/12/15NA Series

Provides detailed physical dimensions and required clearances for MUZ-GE09/12/15NA models.

Dimension Diagrams for MUZ-GE18NA Series

Shows physical dimensions and installation clearances for MUZ-GE18NA models.

Dimension Diagrams for MUZ-GE24NA Series

Displays physical dimensions and installation clearances for MUZ-GE24NA models.

Wiring Diagram

Wiring Schematics for MUZ-GE09/12NA Models

Illustrates the electrical wiring for MUZ-GE09/12NA outdoor units, including inverter board.

Wiring Schematics for MUZ-GE15NA Models

Provides electrical wiring diagrams for MUZ-GE15NA outdoor units and related components.

Wiring Schematics for MUZ-GE18NA Models

Shows the electrical wiring diagrams for MUZ-GE18NA outdoor units and their components.

Wiring Schematics for MUZ-GE24NA Models

Displays the electrical wiring diagrams for MUZ-GE24NA outdoor units and associated circuitry.

Refrigerant System Diagram

Refrigerant Flow for MUZ-GE09/12/15NA Series

Diagrams illustrating the refrigerant circuit and flow for MUZ-GE09/12/15NA models.

Refrigerant Flow for MUZ-GE18/24NA Series

Shows the refrigerant circuit and flow diagrams for MUZ-GE18/24NA outdoor units.

Data

Cooling Capacity Performance and Corrections

Tables detailing cooling capacity at various conditions and correction factors for piping length.

Heating Capacity Performance Data

Data showing heating capacity (TC, TPC) across different temperature ranges.

Performance Curves (Cooling)

Graphs illustrating cooling capacity and power consumption based on operating temperatures.

Performance Curves (Heating)

Charts depicting heating capacity and power consumption versus operating temperatures.

Condensing Pressure Data

Graphs showing condensing and suction pressures for cooling and heating modes.

Standard Operation Data Summary

A summary table of key operating parameters under standard conditions for various models.

Actuator Control

Outdoor Fan Motor and Reversing Valve Control

Explains the control logic for the outdoor fan motor and the reversing valve (R.V. coil).

Sensor-Actuator Relationship for Control

Details how sensors influence the operation of actuators like compressor, LEV, and fans.

Service Functions

Defrost Setting Adjustment

Instructions for modifying the defrost finish temperature using jumpers on the P.C. board.

Pre-Heat Control Function

Describes the pre-heat control function and how to enable/disable it for low-temperature operation.

Troubleshooting

Troubleshooting Precautions and Procedures

Safety guidelines and initial steps for diagnosing issues with the air conditioner.

Failure Mode Recall and Interpretation

Guide to recalling and understanding error codes indicated by the unit's LEDs for diagnosis.

Outdoor Unit Failure Mode Identification

A table listing specific outdoor unit faults, their LED indications, conditions, and remedies.

Troubleshooting Check Table and Part Criteria

A comprehensive check table correlating symptoms with LED codes and detailed criteria for testing main parts.

Troubleshooting Flowcharts for Key Components

Diagnostic flowcharts for troubleshooting the inverter, compressor, power supply, and other critical components.

Checking Expansion Valve (LEV) Operation

Steps to verify the function and resistance characteristics of the electronic expansion valve (LEV).

Inverter P.C. Board Diagnosis

Procedures for diagnosing issues with the inverter P.C. board, including fuse checks and LED status.

Miswiring and Serial Signal Error Diagnosis

Guidance on identifying and resolving problems related to wiring errors and communication failures.

Electromagnetic Noise Troubleshooting

Steps to identify and mitigate electromagnetic interference affecting TV sets or radios.

Disassembly Instructions

Cabinet and Component Removal for MUZ-GE09/12/15NA Series

Step-by-step instructions for disassembling the outdoor unit cabinet and internal parts.

Cabinet and Component Removal for MUZ-GE18NA Series

Procedures for safely disassembling the outdoor unit cabinet and its internal components.

Cabinet and Component Removal for MUZ-GE24NA Series

Detailed steps for disassembling the outdoor unit cabinet and accessing internal parts.

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