Troubleshooting
SiBE811001EB
279
CONVENI-PACK
8.5.21 Power Supply Insufficient or Instantaneous Failure
Error Code
U2
Applicable
Models
LCBKQ3AV1
Method of Error
Detection
Detection of voltage of main circuit capacitor built in the inverter and power supply voltage.
Error Decision
Conditions
When the voltage aforementioned is less than 170V
When the voltage aforementioned is less than 440V
Supposed
Causes
Power supply insufficient
Instantaneous power failure
Open phase
Defective PCB
Defective compressor
Defective main circuit wiring
Defective fan motor
Defective connection of signal cable
LED Indications
First digit
l h k l h h l
Second digit
l k h h h l h