Table Of Contents - Mitsubishi Electric PUHZ-SHW230YKA2 Service Manual

Table of Contents

Table Of Contents1
Technical Changes2
Safety Precaution3
Cautions Related To New Refrigerant3
Cautions For Refrigerant Piping Work4
Additional Refrigerant Charge4
Service Tools4
Specifications5
Heating6
Data7
Additional Refrigerant Charge (R410A)7
Recharge Refrigerant Amount (R410A)7
Noise Criterion Curves7
Standard Operation Data8
Capacity Correction8
Outlines And Dimensions9
Wiring Diagram10
Wiring Specifications12
Field Electrical Wiring12
Indoor-Outdoor Connecting Cable13
Refrigerant System Diagram14
Troubleshooting15
Checkpoint Under Test Run16
Self-Check16
Before Test Run16
Self-Diagnosis Action Table17
Abnormalities Detected While Unit Is Operating19
Open/Short Of Outdoor Unit Thermistors20
Temperature Of Heat Sink20
Power Module20
Too Low Superheat Due To Low Discharge Temperature20
Overvoltage Error21
Undervoltage Error21
Input Current Sensor Error/L1-Phase Open Error21
Overheat Protection22
Abnormal Pressure Of Pressure Sensor22
Compressor Overcurrent Interruption22
Current Sensor Error Or Input Current Error22
Remote Controller Transmission Error23
Remote Controller Control Board23
Interface Unit/Flow Temp. Controller/Outdoor Unit Communication Error24
Non Defined Check Code24
Serial Communication Error24
Actual Flow Water Temperature Thermistor (Th1)25
Pipe Temperature Thermistor/Liquid25
Freezing/Overheating Protection Is Working25
Actual Tank Temperature Thermistor25
How To Check The Parts27
How To Check The Components29
Thermistor Feature Chart29
Low Temperature Thermistors29
Medium Temperature Thermistor29
Linear Expansion Valve30
Operation Summary Of The Linear Expansion Valve30
Linear Expansion Valve Operation30
Output Pulse Signal And The Valve Operation30
How To Attach And Detach The Coil Of Linear Expansion Valve31
How To Detach The Coil31
How To Attach The Coil31
Test Point Diagram32
Outdoor Controller Circuit Board32
Outdoor Noise Filter Circuit Board34
Outdoor Power Circuit Board36
Function Of Switches38
Function Of Connector40
Special Function40
Display Function Of Inspection For Outdoor Unit41
Normal Condition41
Abnormal Condition41
Outdoor Unit Operation Monitor Function43
Indicator Change Of Self-Diagnosis43
Digital Indicator Led1 Working Details43
Request Code List51
Detail Contents In Request Code54
Relay Output State54
Frequency Control State54
Actuator Output State55
Error Content55
Outdoor Unit – Capacity Setting Display56
Outdoor Unit – Setting Information56
Disassembly Procedure57
Removing The Service Panel And Top Panel57
Removing The Fan Motor (Mf1, Mf2)57
Removing The Electrical Parts Box58
Removing The Thermistor58
Removing The 4-Way Valve Coil (21S4) And Linear60
Removing The 4-Way Valve60
Removing The Linear Expansion Valve60
Removing The High Pressure Switch (63H) And Low Pressure Switch (63L)61
Removing The Compressor (Mc)61
Removing The Power Receiver62
Removing The High Pressure Sensor (63Hs)62