Table Of Contents - Mitsubishi Electric PUHY-200YMF-C Service Handbook

Table of Contents

Table Of Contents2
Safety Precautions3
Before Installation And Electric Work3
Symbols Used3
Precautons For Devices That Use R407C Refrigerant4
Storage Of Piping Material5
Piping Machining6
Necessary Apparatus And Materials And Notes On Their Handling7
Brazing8
Airtightness Test9
Vacuuming9
Charging Of Refrigerant10
Dryer10
Appearance Of Components11
Component Of Equipment11
Controller Box13
Main Board14
Inv Board15
Fancon Board16
G/A Board16
Bc Controller17
Relay 10 Board18
Relay 4 Board18
Refrigerant Circuit Diagram And Thermal Sensor19
Electrical Wiring Diagram25
Standard Operation Data34
Cooling Operation34
Heating Operation38
Function Of Dip Sw And Rotary Sw42
Setting Of Dip Sw246
Setting Of Dip Sw447
Check Points Before Test Run48
Caution At Inverter Check48
Check Points For Test Run When Mounting Options49
Attention For Mounting Drain Water Lifting-Up Mechanism49
Test Run Method52
Grouping Registration Of Indoor Units With M-Net Remote Controller53
Switch Function53
Attribute Display Of Unit54
Description Of Registration/Deletion/Retrieval54
Group Registration Of Indoor Unit55
Method Of Retrieval/Confirmation56
Method Of Deletion57
Deletion Of Information On Address Not Existing58
Control Of Outdoor Unit59
Initial Processing59
Frequency Control60
Back Up Of Frequency Control By Bypass Valve61
Oil Return Control61
Subcool Coil Control61
Defrost Operation Control61
Starting Of Defrost Operations62
Completion Of Defrosting Operations62
Control Of Liquid Level Detecting Heater62
Judgement Of Refrigerant Amount62
Refrigerant Recovery Control63
Control Of Outdoor Unit Fan And Outdoor Unit Heat Exchanger Capacity63
Control Of Bc Controller64
Control Of Sva, Svb And Svc64
Control Of Svm64
Control Of Lev64
Operation Flow Chart65
Outdoor Unit65
Bc Controller (For Pury)66
Indoor Unit67
Cooling Operation Chart68
Heating Operation Check69
Dry Operation70
List Of Major Component Functions71
Resistance Of Temperature Sensor74
Refrigerant Amount Adjustment75
Adjustment And Judgement Of Refrigerant Amount75
Symptom75
Refrigerant Amount And Operating Characteristics75
Refrigerant Volume Adjustment Operation76
Operating Characteristics Refrigerant Volume76
Adjusting And Judging The Refrigerant Volume76
Refrigerant Volume76
Additional Refrigerant Charge Volume77
Refrigerant Volume Adjustment Mode Operation78
Refrigerant Amount Adjustment Mode Operations81
Time Required For Recovering Refrigerant From Low Pressure Port84
Additional Evacuation And Refrigerant Replacement84
Troubleshooting85
Principal Parts85
Solenoid Valve87
Refrigerant Circuit Diagram88
Outdoor Lev89
Pulse Signal Output And Valve Operation89
Lev Valve Closing And Valve Opening Operations89
Judgment Methods And Likely Failure Mode90
Outdoor Lev (Slev) Coil Removal Procedure91
Removing The Coils91
Installing The Coils91
Check Valves Block92
Intelligent Power Module (Ipm)93
Diode Stack93
Trouble And Remedy Of Remote Controller94
Transmission Power Circuit (30 V) Check Procedure97
Investigation Of Transmission Wave Shape/Noise98
Symptom Caused By The Noise Entered Into Transmission Line98
Method To Confirm Wave Shape98
Measures Against Noise99
Treatment Of Inverter And Compressor Troubles100
Treatment Of Fan Motor Related Troubles101
Troubleshooting At Breaker Tripping102
Individual Parts Failure Judgment Methods103
Troubleshooting The Major Components Of The Bc Controller105
Symptoms Of Incorrect Connection Of Bc Controller Sensor To The Board106
Check Using Led Monitor Display Switch (Outdoor Main Board Sw1)106
Pressure Sensor Replacement Precaution106
Temperature Sensor107
Lev, Solenoid Valve Troubleshooting Flow109
Symptoms Of Incorrect Connection To Bc Controller Lev Board110
Self-Diagnostic Monitor111
Solenoid Valve Troubleshooting Flow111
Solenoid Valve Troubleshooting112
Solenoid Valves (Sva, Svb, Svc, Svm)113
Bc Controller Transformer113
Bc Controller Disassembly Procedure114
Service Panel114
Control Box115
Thermistor (Liquid And Gas Piping Temperature Detection)116
Pressure Sensor116
Lev117
Solenoid Valve Coil117
Check Code List118
Mechanical120
Serial Transmission Abnormality120
Self-Diagnosis And Countermeasures Depending On The Check Code Displayed120
Discharge Temperature Abnormality (Outdoor Unit)121
Low Pressure Saturation Temperature Trouble122
Liquid Level Detecting Temperature Sensor Abnormality122
Low Pressure Abnormality123
High Pressure Abnormality 1 (Outdoor Unit)123
High Pressure Abnormality (Bc Controller)124
High Pressure Abnormality 2 (Outdoor Unit)124
Insufficient Refrigerant Abnormality125
Overcharged Refrigerant Abnormality125
Suction Pressure Abnormality126
Drain Pump Abnormality126
Drain Sensor Abnormality126
Operation Of Float Switch126
Reverse Phase Abnormality127
Power Supply Sync Signal Abnormality127
Fan Speed Abnormality (Motor Abnormality)128
Vdc Sensor/Circuit Abnormality128
Bus Voltage Abnormality129
Radiator Panel Overheat Protection129
Overload Protection130
Ipm Alarm Output/Bus Voltage Abnormality130
Thermal Sensor Abnormality (Outdoor Unit)131
Cooling Fan Abnormality131
Pressure Sensor Abnormality (Bc Controller)132
Pressure Sensor Abnormality (Outdoor Unit)132
Iac Sensor/Circuit Abnormality132
Different Indoor Model Connected Abnormality133
Communication/System134
Multiple Address Error134
Transmission Processor Hardware Error134
Transmission Circuit Bus-Busy Error135
Communications With Transmission Processor Error136
No Ack Error137
Single Refrigerant System137
Group Operation System Using Plural Refrigerants138
Connecting System With System Controller (Melans)139
No Relation With System140
No Response Error141
System Error141
Total Capacity Error141
Capacity Code Error/Connected Unit Count Over141
Connected Unit Count Over142
Address Setting Error142
Connection No. Setting Error142
Remote Control Sensor Error142
Led Monitor Display143
Preparation, Repairs And Refrigerant Refilling When Repairing Leaks162
Location Of Leaks: Extension Piping Or Indoor Units (When Cooling)162
Location Of Leaks: Outdoor Unit (Cooling Mode)162
Location Of Leaks: Extension Piping Or Indoor Units (Heating Mode)163
Location Of Leaks: Outdoor Unit (When Heating)164
Check The Composition Of The Refrigerant (Pury-P200·250Ymf-C Only)165