Table Of Contents - Haier 1U50S2SJ2FA Service Manual

Table of Contents

Table Of Contents2
Model Name Explanation3
Introduction3
Safety Cautions4
Caution In Repair4
Cautions Regarding Products After Repair5
Inspection After Repair7
Using Icons7
Using Icons List8
Specifications9
Sensors List10
Piping Diagrams11
Operation Range12
Printed Circuit Board Connector Wiring Diagram13
Wiring Diagrams16
Functions And Control17
The Operation Frequency Of Outdoor Unit And Its Control17
The Starting Of Compressor17
The Calculation of the Compressor's Frequency17
The Outdoor Fan Control (Exchange Fan)19
The Control Of The Outdoor Electronic Expansion Valve (Eev)19
Four Way Control20
Protection Function20
Ttc High Temperature-Preventing Protection20
Tc High Temperature-Preventing Control Of The Indoor Heating Unit20
The Control Of Preventing The Over Current Of The Compressor21
The Protection Function Of Ac Current21
Anti-Freezing Protection Of The Indoor Heat Exchanger22
The Frequency Limitation Of Modification Rate22
Value Of Thermistor23
Temperature Protection Of The Outdoor Refrigerating Coil23
Ambient Sensor, Defrosting Sensor, Pipe Sensor23
Discharging Sensor26
Dimensional Drawings31
Center Of Gravity31
Service Diagnosis32
Parameter Of Primary Electronic Appliance32
Problem Symptoms And Measures33
Error Codes And Description Indoor Display34
Thermistor Or Related Abnormality35
Eeprom Abnormal36
Indoor Ac Fan Motor Malfunction37
Outdoor Dc Fan Motor Fault38
Ipm Protection40
Over-Current Of The Compressor41
The Communication Fault Between Ipm And Outdoor Pcb42
Power Supply Over Or Under Voltage Fault43
Overheat Protection For Discharge Temperature44
The Communication Fault Between Indoor And Outdoor45
Loss Of Synchronism Detection47
Inverter Side Current Detection Is Abnormal47
High Work-Intense Protection48
Performence And Curves Diagrams49
Cooling Capacity-Temperature Curves49
Cooling Power Consumption Value- Temperature Curves50
Performance And Curves Diagrams50
Cooling Discharge Pressure Curves51
Cooling Suction Pressure Curves52
Heating Capacity-Temperature Curves53
Heating Power Consumption Value- Temperature Curves54
Heating Discharge Pressure Curves55
Heating Suction Pressure Curves56
Circuit Diagrams57
Removal Procedure61
Remove Of Front Panel62
Remove The Air Filters And Horizontal Flap65
Remove The Casing66
Release Stepping Motor (2 Type)68
Removal Of Heat Exchanger69