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COMMISSIONING
198
Display
Title
code
DC Compressor
26
Position
AC Input Instant over
27
Current Error
Inverter compressor
29
over current
High temperature in
32
Discharge pipe of the
inverter compressor
35
Low Presser Error
Problem in D-pipe
41
temperature sensor
Problem in high
43
pressure sensor
Problem in outdoor
44
air temperature
sensor
Cause of error
• Compressor Starting fail error
PCB(Inverter) input current is over
100 A(peak) for 2 us
(HM**1M U*3) Inverter Compressor
input current is 30 A.
(HM**3M U*3) Inverter Compressor
input current is 24 A.
• Overload operation (Outdoor fan
constraint, screened, blocked)
• Refrigerant leakage (insufficient)
• Poor INV Comp Discharge sensor
• LEV connector displaced / poor
LEV assembly
Excessive decrease of low pressure
• Open / Short
• Soldered poorly
• Internal circuit error
Abnormal value of sensor
(Open/Short)
• Open / Short
• Soldered poorly
• Internal circuit error
Check point & Normal condition
• Check the connection of comp wire "U,V,W"
• Malfunction of compressor
• Check the component of "IPM", detection parts.
• Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge)
• Compressor damage (Insulation damage/Motor
damage)
• Input voltage abnormal (L,N)
• Power line assemble condition abnormal
• PCB assembly 1 Damage (input current sensing part)
• Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge)
• Compressor damage(Insulation damage/Motor
damage)
• Input voltage low
• ODU PCB assembly 1 damage
• Check outdoor fan constraint/ screened/ flow structure
• Check refrigerant leakage
• Check if the sensor is normal
• Check the status of EEV assembly
• Defective low pressure sensor
• Defective unit fan
• Refrigerant shortage/leakage
• Deformation because of damage of refrigerant pipe
• Defective unit EEV
• Covering / clogging (unit covering during the cooling
mode / unit filter clogging during heating mode)
• SVC valve clogging
• Defective unit PCB(Inverter)
• Defective unit pipe sensor
• Bad connection of thermistor connector
• Defect of thermistor connector (Open/Short)
• Defect of outdoor PCB(Inverter)
• 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)
• Bad connection of thermistor connector
• Defect of thermistor connector (Open/Short)
• Defect of outdoor PCB(Inverter)
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