Table Of Contents - Mitsubishi Electric PUMY-P112VKM1 Service Manual

Table of Contents

Table Of Contents1
Safety Precaution2
Cautions Related To New Refrigerant2
Cautions For Service3
Additional Refrigerant Charge3
Service Tools3
Precautions For Salt Proof Type "-Bs" Model3
Thickness Of Pipes4
Dimensions Of Flare Cutting And Flare Nut4
Tools For R410A4
Flare Cutting Dimensions4
Overview Of Units5
Unit Construction5
Connectable Indoor Unit Lineup (Heat Pump Inverter Type)6
2- Branch Pipe (Joint): Optional Parts6
Unit Construction (Mixed System)7
Unit Specifications8
Outdoor Unit8
Method For Identifying Multi-S Model8
Operating Temperature Range8
Specifications9
Data11
Cooling And Heating Capacity And Characteristics11
Method For Obtaining System Cooling And Heating Capacity11
Sample Calculation11
Standard Operation Data (Reference Data)12
Standard Capacity Diagram13
Correcting Cooling And Heating Capacity19
Correcting Changes In Air Conditions19
Cooling Performance Curve19
Heating Performance Curve19
Correcting Capacity For Changes In The Length Of Refrigerant Piping20
Capacity Correction Curve20
Method For Obtaining The Equivalent Piping Length20
Correction Of Heating Capacity For Frost And Defrosting20
Noise Criterion Curves21
Outlines And Dimensions22
Wiring Diagram24
Cautions When Servicing24
During Normal Operation24
When Fault Requiring Inspection Has Occurred24
Necessary Conditions For System Construction26
Transmission System Setup26
Refrigerant System Diagram27
Refrigerant System Diagram (When Using Branch Box)28
Piping Connection Size28
In Case Of Using 1-Branch Box28
In Case Of Using 2-Branch Boxes28
Pipe Size29
Pipe Size (Branch Box-Indoor Unit) For P Series Indoor Unit29
Valve Size For Outdoor Unit29
Valve Size For Branch Unit29
System Control30
Example For The System30
Example Of A M-Net Remote Controller System30
Operation Using 2 M-Net Remote Controllers30
Name, Symbol And The Maximum Remote Controller Units For Connection31
Longest Transmission Cable Length31
Same As Above31
Example Of A Ma Remote Controller System34
Standard Operation34
Operation Using Two Remote Controllers34
Group Operation34
L35
Ma Remote Controller Cable Length35
Example Of A System Using Branch Box And A-Control Indoor Unit38
Troubleshooting42
Check Points For Test Run42
Procedures Before Test Run42
Test Run For M-Net Remote Controller42
Test Run For Wired Remote Controller43
Test Run Operation43
Auto Vane Check43
Special Function Operation And Settings44
Group Setting Display44
Normal Completion Of Entry44
Entry Error Signal44
Address Check: Refer To Section (1) Regarding Address Entry45
Clearing An Address45
In Making Paired Settings45
Countermeasures For Error During Test Run46
Serial Communication Error47
Abnormal Points And Detection Methods47
Diagnosis Of Defectives47
Compressor Temperature Trouble48
Low Pressure Trouble50
63L Equipped Model50
High Pressure Trouble53
Superheat Due To Low Discharge Temperature Trouble57
Refrigerant Shortage Trouble59
Blocked Valve In Cooling Mode61
4-Way Valve Trouble In Heating Mode62
Water Leakage63
Drain Overflow Protection65
Drain Pump (Dp)65
Drain Sensor Abnormality70
Compressor Current Interruption (Locked Compressor)71
Compressor Overcurrent Interruption73
Heat Sink Temperature Trouble77
Power Module Trouble78
Rotational Frequency Of Outdoor Fan Motor Trouble79
Compressor Temperature Thermistor (Th4) Open/Short80
Suction Pipe Temperature Thermistor (Th6) Open/Short81
Air Inlet Thermistor Trouble (Th21)82
Liquid Pipe Temperature Thermistor Trouble (Th22)82
Gas Pipe Temperature Thermistor Trouble (Th23)82
Outdoor Liquid Pipe Temperature Thermistor (Th3) Open/Short83
Ambient Thermistor (Th7) Open/Short84
Hic Pipe Temperature Thermistor (Th2) Open/Short85
Heat Sink Temperature Thermistor(Th8) Open/Short86
High-Pressure Sensor (63Hs) Trouble87
Low-Pressure Sensor (63Ls) Trouble88
Primary Current Error89
Models Equipped With The Float Switch90
Contact Failure Of Drain Float Switch90
Duplex Address Error91
Transmission Processor H/W Error92
Transmission Bus Busy Error93
Signal Communication Error With Transmission Processor94
No Ack Error95
No Response Frame Error99
Ma Communication Receive Error100
Total Capacity Error104
Capacity Code Error105
Connecting Excessive Number Of Units106
Address Setting Error107
Remote Controller Diagnosis108
Remote Controller Trouble110
The Following Symptom Do Not Represent Trouble111
Internal Switch Function Table112
Outdoor Unit Input/Output Connector114
State (Cn51)114
Auto Change Over (Cn3N)114
How To Check The Parts115
Check Method Of Dc Fan Motor116
Fuse Check116
How To Check The Components117
Low Temperature Thermistors117
Medium Temperature Thermistor117
High Temperature Thermistor117
Test Point Diagram118
Outdoor Multi Controller Circuit Board118
Outdoor Power Circuit Board119
Brief Check Of Power Module119
M-Net Power Circuit Board121
Outdoor Noise Filter Circuit Board122
Outdoor Unit Information Display123
Electrical Wiring131
Overview Of Power Wiring131
Wiring Diagram For Main Power Supply131
When Power Is Supplied Separately132
When Power Is Supplied From The Outdoor Unit132
Cross Section Area Of Wire For Main Power And On/Off Capacities133
Connect To Branch Box (Pac-Mk·bc)133
Connect To Connection Kit (Pac-Lv11M)133
Design For Control Wiring134
Wiring Transmission Cables134
Selection Number Of Control Wires134
Types Of Control Cables134
System Switch Setting135
Example External Wiring Diagram For A Basic System135
Example Of System When Using A Branch Box135
Example Of System When Using A M-Net Controller135
Obtaining Electrical Characteristics Of A City Multi-S Series System136
Procedure For Obtaining Total Power Consumption136
Method Of Obtaining Total Current136
Method Of Obtaining System Power Factor136
Refrigerant Piping Tasks137
Refrigerant Piping System137
Selecting The Refrigerant Branch Kit137
Select Each Section Of Refrigerant Piping137
Header-Branch Method138
Mixed Method141
Precautions Against Refrigerant Leakage143
Introduction143
Confirming Procedure Of R410A Concentration143
Disassembly Procedure144
Removing The Service Panel And Top Panel144
Removing The Electrical Parts Box144
Removing The Thermistor145
Removing The 4-Way Valve Coil (21S4)146
Removing The 4-Way Valve146
Removing Bypass Valve Coil (Sv1) And Bypass Valve147
Removing The High Pressure Switch147
Removing The Low Pressure Sensor (63Ls)147
Removing Electronic Expansion Valve (Lev-A, Lev-B)147
Removing The Compressor (Mc)148
Removing The Accumulator148
Removing The Fan Motor (Mf1, Mf2)149