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Mitsubishi Electric MUH17TN User Manual

Mitsubishi Electric MUH17TN
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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Mitsubishi Electric MUH17TN Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMUH17TN
CategoryAir Conditioner
LanguageEnglish

Summary

FEATURES

DIFFERENT POINTS between models for USA and CANADA

Highlights differences in features between USA and Canada models.

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

INDOOR UNIT

Details the names and functions of parts for the indoor unit.

ACCESSORIES

Lists and describes optional accessories for the units.

OUTDOOR UNIT

Details the names and functions of parts for the outdoor unit.

REMOTE CONTROLLER

Explains the parts and functions of the remote controller.

INDOOR UNITS COMBINATION

SPECIFICATIONS

DATA

PERFORMANCE DATA

Presents performance data for cooling and heating capacities.

PERFORMANCE CURVE

CONDENSING PRESSURE

STANDARD OPERATION DATA

OPERATING RANGE

OUTLET AIR SPEED AND COVERAGE RANGE

ADDITIONAL REFRIGERANT CHARGE (R22(oz.))

CAPACITY AND THE INPUT CURVES

Capacity and input correction by means of inverter output frequency

Outdoor low pressure and outdoor unit current

COOL operation

Details outdoor low pressure and current during cooling operation.

HEAT operation

Details outdoor low pressure and current during heating operation.

OUTLINES AND DIMENSIONS

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

MICROPROCESSOR CONTROL

“I FEEL CONTROL” OPERATION

Explains the "I FEEL CONTROL" operation mode.

High pressure protection

Details the high pressure protection mechanism.

Defrosting

Explains the defrosting operation and conditions.

COOL OPERATION

Details the procedure for COOL operation.

INVERTER MAIN POWER SUPPLY CIRCUIT

Function of main parts

Lists the functions of the main components in the power supply circuit.

Optimal voltage control

LEV control

Operational frequency range

Heat defrosting control

Discharge temperature protection control

Outdoor fan control

SERVICE FUNCTIONS

COMPULSORY DEFROSTING MODE FOR SERVICE

Explains how to initiate compulsory defrosting for service.

CHANGE IN DEFROST SETTING

Details how to change defrosting settings.

TIMER SHORT MODE

Explains how to shorten timer settings for service.

AUTO RESTART FUNCTION

Explains the auto restart function and how to release it.

TROUBLESHOOTING

Cautions on troubleshooting

Provides important precautions before starting troubleshooting.

Instruction of troubleshooting

Guides the user on how to perform troubleshooting steps.

Troubleshooting check table

A table indicating symptoms and detection methods for troubleshooting.

Trouble criterion of main parts

Lists criteria for checking main components during troubleshooting.

TEST POINT DIAGRAM AND VOLTAGE

Indoor electronic control P.C. board

Provides test points and voltage readings for the indoor P.C. board.

Outdoor deicer P.C. board

Provides test points and voltage readings for the outdoor deicer P.C. board.

Electronic control P.C. board

Shows test points and voltage readings for the main electronic P.C. board.

I.P.M P.C. board

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

RELAY OPERATION

COMPRESSOR CONTACTOR

Details relay operations for the compressor contactor in different modes.

DISASSEMBLY INSTRUCTIONS

MSH09TW MSH09TW - U1 INDOOR UNIT

Provides step-by-step instructions for disassembling the MSH09TW indoor unit.

MSH12TN MSH15TN MSH17TN MSH12TN - MSH15TN - MSH17TN - U1 U1 U1 INDOOR UNIT

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

MUH09TW MUH12TN MUH09TW - U1 MUH12TN - MUH12TN - U2 OUTDOOR UNIT

Provides disassembly instructions for MUH09/12TN outdoor units.

MUH15TN MUH15TN - U1 MUH15TN - U2 OUTDOOR UNIT

Provides disassembly instructions for MUH15TN outdoor units.

MUH17TN MUH17TN - U1 OUTDOOR UNIT

Provides disassembly instructions for MUH17TN outdoor units.

MXZ30TN MXZ30TN2 OUTDOOR UNIT

Provides disassembly instructions for MXZ30TN/TN2 outdoor units.

PARTS LIST

INDOOR UNIT STRUCTURAL PARTS

Lists structural parts for indoor units.

ACCESSORY AND REMOTE CONTROLLER

Lists accessories and remote controller parts.

INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

Lists electrical and functional parts for indoor units.

OUTDOOR UNIT STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS

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

OPTIONAL PARTS

REFRIGERANT PIPES

Details specifications for optional refrigerant pipes.

AIR CLEANING FILTER

Information on air cleaning filters, including maintenance.

DEODORIZING FILTER

Information on deodorizing filters, including maintenance.

Different-diameter pipe

Details specifications for different-diameter pipe options.

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