Table Of Contents - Mitsubishi Electric MSH09TW Service Manual

Table of Contents

Table Of Contents1
Service Manual1
Features2
Different Points2
Msh12Tn Msh12Tn2
Muh15Tn2
Auto-Restart Function3
High Performance Rotary Compressor3
Inverter Technology4
Extra Energy Savings4
High-Speed Heating And Cooling4
Optimum Comfort Year-Round4
Technical Changes5
Part Names And Functions7
Indoor Unit7
Accessories7
Outdoor Unit8
Remote Controller9
Indoor Units Combination10
Specifications11
Operating Range11
Max. Refrigerant Piping Length14
Max. Height Difference14
Max. Refrigerant Piping Length & Pipe Size Selection16
Performance Data17
Cooling Capacity Corrections18
Heating Capacity18
Performance Curve19
Condensing Pressure23
Standard Operation Data27
Power Supply27
Outlet Air Speed And Coverage Range32
Additional Refrigerant Charge32
Air Flow33
Main Readings33
Capacity And The Input Curves33
How To Measure The Indoor Air Wet-Bulb/Dry-Bulb Temperature Difference33
Capacity And Input Correction By Means Of Inverter Output Frequency34
Outdoor Low Pressure And Outdoor Unit Current35
12-Class Unit In Single Operation36
15-Class Unit In Single Operation37
17-Class Unit In Single Operation38
Outlines And Dimensions39
Wiring Diagram43
Refrigerant System Diagram51
Microprocessor Control54
Wireless Remote Controller54
Indoor Unit Display Section54
"I Feel Control" Operation55
COOL Mode of "I FEEL CONTROL"56
Temperature Buttons56
Coil Frost Prevention56
Indoor Fan Speed Control56
DRY Mode of "I FEEL CONTROL"57
Operation Time Chart57
HEAT Mode of "I FEEL CONTROL"57
Warm Air Control58
Flow Soft Control58
High Pressure Protection58
Defrosting59
Cool Operation60
Dry Operation60
R.v. Coil Control60
Outdoor Temperature Control60
Fan Motor Control61
Auto Vane Operation61
Rotational Frequency Feedback Control61
Fan Motor Lock-Up Protection61
Timer Operation62
Program Timer62
Swing Mode62
Cold Air Prevention In Heat Operation62
Emergency-Test Operation63
Inverter Multi System Control64
Inverter Main Power Supply Circuit65
Outline Of Main Power Supply Circuit65
At The Start Of Operation65
At Normal Operation65
Optimal Voltage Control66
Elimination Of Electrical Noise66
Ipm66
Function Of Main Parts66
Lev Control67
Determination Of Lev Standard Opening In Each Indoor Unit67
Simultaneous Correction Of Lev Openings By Suction Super Heat68
Separate Correction69
Lev Opening Correction By Discharge Temperature69
Operational Frequency Range70
Heat Defrosting Control70
Conditions To Enter Defrosting Mode70
High Pressure Protection Control On Heat Mode70
Discharge Temperature Protection Control71
Refrigerant Recovery Control On Heating71
Outdoor Fan Control71
Compressor Operation Frequency71
Service Functions72
Compulsory Defrosting Mode For Service72
Change In Defrost Setting72
Relation Between Main Sensor And Actuator72
Timer Short Mode73
P.c. Board Modification For Individual Operation73
Auto Restart Function74
Troubleshooting75
Cautions On Troubleshooting75
Instruction Of Troubleshooting76
Troubleshooting Check Table78
Trouble Criterion Of Main Parts80
Indoor Fan Does Not Operate83
Check Of Indoor Fan Motor83
Check Of Remote Controller And Receiver P.c. Board84
Check Of Indoor Electronic Control P.c. Board85
Check Of Outdoor Unit86
How To Check Mis-Wiring And Serial Signal Error87
Check Of Outdoor Thermistor88
Check Of Power Supply89
Check Of Serial Signal89
Check Of R. V. Coil90
Check Of Lev91
Check Of Inverter/Compressor91
Check Of Thermistor92
Check Of Fan Motor92
Check Of Hps93
The Other Cases93
Test Point Diagram And Voltage94
Outdoor Deicer P.c. Board96
Electronic Control P.c. Board97
Noise Filter P.c. Board98
I.p.m P.c. Board99
Relay P.c. Board99
Relay Operation100
Compressor Contactor100
Solid State Relay100
Disassembly Instructions101
Removing The Electrical Box102
Removing The Vane Motor102
Removing The Line Flow Fan And The Indoor Fan Motor103
Removing The Front Panel104
Removing The Electronic Control P.c. Board104
Removing The Indoor Fan Motor And The Line Flow Fan105
Removing The Cabinet106
Removing The Deicer P.c. Board106
Removing The Propeller Fan And The Outdoor Fan Motor107
Removing The Compressor107
Removing The Heat Exchanger And Compressor111
Removing The 4-Way Valve113
Removing The Linear Expansion Valve113
Removing The Reactor113
Parts List114
Indoor Unit Structural Parts114
Indoor Unit Electrical Parts And Functional Parts115
Outdoor Unit Structural Parts, Electrical Parts And Functional Parts116
Accessory And Remote Controller118
Outdoor Unit Functional Parts124
Outdoor Unit Structural Parts125
Optional Parts126
Refrigerant Pipes126
Air Cleaning Filter126
Deodorizing Filter126