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Mitsubishi Electric MUH09TW - User Manual

Mitsubishi Electric MUH09TW
129 pages
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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. FEATURES·························································2
2. TECHNICAL CHANGES ····································5
3. PART NAMES AND FUNCTIONS······················7
4. INDOOR UNIT COMBINATION························10
5. SPECIFICATION···············································11
6. DATA·································································17
7. OUTLINES AND DIMENSIONS ·······················39
8. WIRING DIAGRAM ··········································43
9. REFRIGERANT SYSTEM DIAGRAM··············51
10. MICROPROCESSOR CONTROL ····················54
11. SERVICE FUNCTIONS·····································72
12. TROUBLESHOOTING······································75
13. DISASSEMBLY INSTRUCTIONS···················101
14. PARTS LIST····················································114
15. OPTIONAL PARTS·········································126
Wireless type
Models
MSH09TW · MUH09TW
MSH12TN · MUH12TN
MSH15TN · MUH15TN
MSH17TN · MUH17TN
MSH09TW
-
· MUH09TW
-
MSH12TN
-
· MUH12TN
-
· MUH12TN
-
MSH15TN
-
· MUH15TN
-
· MUH15TN
-
MSH17TN
-
· MUH17TN
-
U1U1
U2
U1U1
U2
U1U1
U1U1
No. OB275
REVISED EDITION-D
The Slim Line.
From Mitsubishi Electric.
L
I
S
T
E
D
CUS
MSH12TN
MSH15TN
MSH17TN
INDOOR UNIT
MUH15TN
OUTDOOR UNIT
Remote
controller
MSH12TN -
MSH15TN -
MSH17TN -
U1
U1
U1
MUH15TN - MUH15TN -
U2U1
TM
Inverter-controlled multi system Model
· MXZ30TN
· MXZ30TN2
Revision:
MUH12TN- has been added.
MUH15TN- has been added.
REFRIGERANT SYSTEM DIAGRAM of
MXZ30TN and MXZ30TN2 has partly been
changed.
PARTS LIST of MXZ30TN and MXZ30TN2
has partly been changed
Please void OB275 Revised edition-C.
U2
U2
Indication of
model name
Indication of
model name
OB275--1.qxp 03.12.2 16:49 Page 1

Table of Contents

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Summary

FEATURES

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

INDOOR UNIT

Identifies and labels components of the indoor air conditioning unit.

ACCESSORIES

Lists and describes optional items included with the unit for installation and use.

OUTDOOR UNIT

Identifies and labels components of the outdoor air conditioning unit.

REMOTE CONTROLLER

Identifies and describes the functions of the wireless remote control unit.

INDOOR UNITS COMBINATION

SPECIFICATIONS

INDOOR UNIT MODEL

Details technical specifications for various indoor unit models.

OUTDOOR UNIT MODEL

Details technical specifications for various outdoor unit models.

REMOTE CONTROLLER

Details technical specifications for the remote control unit.

REFRIGERANT PIPING

Specifies technical details for refrigerant pipe connections and requirements.

Operating Range

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

DATA

PERFORMANCE DATA

Provides detailed performance metrics for cooling and heating capacities.

PERFORMANCE CURVE

Illustrates performance characteristics through graphical representations.

Condensing pressure

Presents data on condensing pressure under various operating conditions.

OUTLINES AND DIMENSIONS

INDOOR UNIT

Provides physical dimensions and installation space requirements for indoor units.

OUTDOOR UNIT

Provides physical dimensions and installation space requirements for outdoor units.

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Explains the operation and functions of the wireless remote control.

INDOOR UNIT DISPLAY SECTION

Describes the indicators and their meanings on the indoor unit display.

“I FEEL CONTROL” OPERATION

Details the functionality and operation of the "I FEEL CONTROL" feature.

COOL mode of “I FEEL CONTROL”

Explains fan speed control and frost prevention in COOL mode.

DRY mode of “I FEEL CONTROL”

Explains fan speed control and compressor operation in DRY mode.

HEAT mode of “I FEEL CONTROL”

Explains fan speed control and cold air prevention in HEAT mode.

EMERGENCY-TEST OPERATION

Explains how to perform emergency and test run operations for servicing.

LEV control

Determination of LEV standard opening in each indoor unit

Describes how to determine the standard LEV opening based on operating conditions.

Simultaneous correction of LEV openings by suction super heat (COOL, DRY)

Explains how to correct LEV openings based on suction super heat.

LEV opening correction by discharge temperature

Explains how to correct LEV openings based on discharge temperature.

SERVICE FUNCTIONS

COMPULSORY DEFROSTING MODE FOR SERVICE

Describes how to activate forced defrosting for service purposes.

CHANGE IN DEFROST SETTING

Explains how to modify defrost interval and temperature settings.

AUTO RESTART FUNCTION

Explains the auto restart function and how to release it.

TROUBLESHOOTING

Cautions on troubleshooting

Provides important precautions and steps before starting troubleshooting.

Instruction of troubleshooting

Outlines the systematic steps for diagnosing unit issues.

Troubleshooting check table

A table listing symptoms, detection methods, and check points for troubleshooting.

Check of indoor fan motor

Provides a flowchart for diagnosing indoor fan motor issues.

Check of indoor electronic control P.C. board

Provides a flowchart for diagnosing issues with the indoor electronic control P.C. board.

Check of outdoor unit

Flowcharts for diagnosing compressor and outdoor fan motor operation issues.

Check of inverter;compressor

Provides a flowchart for diagnosing inverter and compressor related problems.

TEST POINT DIAGRAM AND VOLTAGE

Indoor electronic control P.C. board

Details test points and voltage readings for the indoor electronic control board.

Outdoor deicer P.C. board

Shows test points and resistance readings for the outdoor deicer P.C. board.

I.P.M P.C. board

Details test points and voltage readings for the I.P.M. P.C. board.

DISASSEMBLY INSTRUCTIONS

MSH09 TW MSH09 TW - U1 INDOOR UNIT

Provides disassembly steps for the MSH09TW indoor unit.

MSH12 TN MSH15 TN MSH17 TN MSH12 TN - U1 MSH15 TN - U1 MSH17 TN - U1 INDOOR UNIT

Provides disassembly steps for MSH12/15/17TN indoor units.

MUH09 TW MUH12 TN MUH09 TW - U1 MUH12 TN - U1 MUH12 TN - U2 OUTDOOR UNIT

Provides disassembly steps for MUH09/12TN outdoor units.

MUH15 TN MUH15 TN - U1 MUH15 TN - U2 OUTDOOR UNIT

Provides disassembly steps for MUH15TN outdoor units.

MUH17 TN MUH17 TN - U1 OUTDOOR UNIT

Provides disassembly steps for MUH17TN outdoor units.

MXZ30 TN MXZ30 TN2 OUTDOOR UNIT

Provides disassembly steps for MXZ30TN/TN2 outdoor units.

PARTS LIST

INDOOR UNIT STRUCTURAL PARTS

Lists structural parts for the indoor unit with part numbers and quantities.

INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

Lists electrical and functional parts of the indoor unit with part numbers.

ACCESSORY AND REMOTE CONTROLLER

Lists accessories and remote controller parts with part numbers.

OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

Lists structural, electrical, and functional parts for outdoor units.

OUTDOOR UNIT FUNCTIONAL PARTS

Lists functional parts for outdoor units with part numbers.

OPTIONAL PARTS

REFRIGERANT PIPES

Lists optional refrigerant pipes and their specifications.

AIR CLEANING FILTER

Details the air cleaning filter, its life, and replacement.

DEODORIZING FILTER

Describes the deodorizing filter, its cleaning, and replacement.

Different-diameter pipe

Lists optional different-diameter pipes for connecting units.

Mitsubishi Electric MUH09TW Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Power Supply220-240 V, 50 Hz
RefrigerantR32
Outdoor Unit Weight28 kg
Indoor Unit Noise Level19 dB
Outdoor Unit Noise Level50 dB(A)

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