143
COMMISSIONING
ENGLISH
Display
code
Title
Cause of error
Check point & Normal condition
43
Sensor error of high
pressure
Abnormal value of sensor
(Open/Short)
• Bad connection of connector PCB(Inverter)
• Bad connection high pressure connector
• Defect of high pressure connector (Open/Short)
• Defect of connector PCB(Inverter) (Open/Short)
• Defect of PCB(Inverter)
44
Air sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
45
Condenser Mid pipe
sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
46
Suction Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
48
Condenser Out-pipe
sensor
• Open / Short
• Soldered poorly
• Internal circuit error
1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
52
PCB Communication
Error
Checking the communication state
between Main PCB and Inverter
PCB
• Generation of noise source interfering with
communication
54
Open and Reverse
Phase Error
Prevention of phase unbalance and
prevention of reverse rotation of
constant-rate compressor
Main power wiring fault
60
PCB(Inverter) &
Main EEPROM
check sum error
EEPROM Access error and Check
SUM error
1. EEPROM contact defect/wrong insertion
2. Different EEPROM Version
3. ODU Inverter & Main PCB assembly 1 damage
61
High temperature
in Cond. Pipe
• Overload operation (Outdoor fan
constraint, screened, blocked)
• Unit heat exchanger contaminated
• EEV connector displaced / poor
EEV assembly
• Poor Cond. Pipe sensor assembly /
burned
• Check outdoor fan constraint / screened / flow structure
• Check if refrigerant overcharged
• Check the status of EEV assembly
• Check the status of sensor assembly / burn
62
Heat sink Temp,
High error
Heatsink sensor detected high
temp.(85 °C)
1. Part no. : EBR37798101~09
- Check the heatsink sensor: 10k °C / at
25 °C(Unplugged)
- Check the outdoor fan is driving rightly
2. Part no. : EBR37798112~21
- Check the soldered condition in the 22,23 pin of IPM,
PFCM
- Check the screw torque of IPM, PFCM
- Check the spreadable condition of thermal grease on
IPM, PFCM
- Check the outdoor fan is driving rightly