Mitsubishi Electric MUH-XV12UV User Manual

SERVICE MANUAL
CONTENTS
1. PART NAMES AND FUNCTIONS······················3
2. SPECIFICATION·················································5
3. NOISE CRITERIA CURVES·······························7
4. OUTLINES AND DIMENSIONS ························ 8
5. WIRING DIAGRAM ··········································10
6. REFRIGERANT SYSTEM DIAGRAM ··············11
7. PERFORMANCE CURVES······························13
8. MICROPROCESSOR CONTROL ····················29
9. SERVICE FUNCTIONS ····································38
10. TROUBLESHOOTING······································40
11. DISASSEMBLY INSTRUCTIONS·····················51
12. PARTS LIST······················································55
Wireless type
Models
MSH-XV07UV -
(
WH
)
·MUH-XV07UV -
MSH-XV09UV -
(
WH
)
·MUH-XV09UV -
MSH-XV12UV -
(
WH
)
·MUH-XV12UV -
E1E1
E1E1
E1E1
No. OB294
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
OB294--1.qxp 02.1.26 1:52 PM Page 1

Mitsubishi Electric MUH-XV12UV Specifications

General

Brand	Mitsubishi Electric
Model	MUH-XV12UV
Category	Air Conditioner
Language	English

Summary

PART NAMES AND FUNCTIONS

INDOOR UNIT COMPONENTS

OUTDOOR UNIT COMPONENTS

ACCESSORIES AND REMOTE CONTROLLER

REMOTE CONTROLLER OVERVIEW

Details the functions and buttons of the wireless remote controller.

SPECIFICATIONS

INDOOR UNIT SPECIFICATIONS

Provides detailed technical specifications for indoor units.

OUTDOOR UNIT SPECIFICATIONS

Provides detailed technical specifications for outdoor units.

WIRING DIAGRAMS

INDOOR UNIT WIRING

Illustrates the electrical connections for the indoor unit.

OUTDOOR UNIT WIRING

Illustrates the electrical connections for the outdoor unit.

REFRIGERANT SYSTEM DIAGRAMS

COOLING AND HEATING CIRCUIT

Depicts the refrigerant circuit and key components for cooling/heating.

PERFORMANCE CURVES

COOLING PERFORMANCE GRAPHS

Illustrates cooling capacity and input based on temperatures.

HEATING PERFORMANCE GRAPHS

Illustrates heating capacity and input based on temperatures.

DETAILED PERFORMANCE DATA

COOL OPERATION PERFORMANCE DATA

Comprehensive tables detailing cooling performance metrics across various conditions.

HEAT OPERATION PERFORMANCE DATA

Comprehensive tables detailing heating performance metrics across various conditions.

MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER OPERATION

"I FEEL CONTROL" MODE OPERATION

Details the operation of the "I FEEL CONTROL" mode, including temperature logic.

DRY MODE OPERATION

HEAT MODE OPERATION

FAN MOTOR CONTROL

AUTO VANE OPERATION

ECONO COOL & POWERFUL COOL MODES

EMERGENCY-TEST OPERATION

AUTO RESTART FUNCTION

AUTO RESTART FUNCTION SETUP

TROUBLESHOOTING

TROUBLESHOOTING CAUTIONS

General safety and handling precautions before troubleshooting.

TROUBLESHOOTING PROCEDURE FLOWCHART

A guide to diagnose issues based on indicator lamp flashes.

TROUBLESHOOTING CHECK TABLE

Details symptoms, detection methods, and check points for abnormalities.

TROUBLE CRITERIA OF MAIN PARTS

Lists resistance and voltage criteria for diagnosing component failures.

INDOOR UNIT TROUBLESHOOTING

OUTDOOR UNIT TROUBLESHOOTING

MIS-WIRING & SERIAL SIGNAL ERROR CHECK

OUTDOOR THERMISTOR & R.V. COIL CHECKS

TEST POINT DIAGRAMS AND VOLTAGES

INDOOR P.C. BOARD TEST POINTS

OUTDOOR DEICER P.C. BOARD

DISASSEMBLY INSTRUCTIONS

INDOOR UNIT DISASSEMBLY PROCEDURES

OUTDOOR UNIT DISASSEMBLY PROCEDURES