
TROUBLESHOOTING
TROUBLESHOOTING
indicator
ON 10s OFF
Means defrosting status. It’s the normal phenomenon.
E5
Power Supply is not stable and Voltage Range is too large. It can be eliminated after
restarting the unit. If not, please contact qualified professionals for service.
E6
Missed-wired or Communication Failure. It can be eliminated after restarting the unit. If
not, please contact qualified professionals for service.
E8
It can be eliminated after restarting the unit. If not, please contact qualified professionals
for service.
U8
It can be eliminated after restarting the unit. If not, please contact qualified professionals
for service.
H6
Indoor Fan Stopped or Running too Slow. It can be eliminated after restarting the unit. If
not, please contact qualified professionals for service.
С5
Missing Configuration Jumper on Indoor Control Board. Please contact qualified
professionals for service.
Indoor and Outdoor Units Do Not Match (Model or Capacity).
F1
Bad Connection or Indoor Air Sensor Failure. Please contact qualified professionals for
service.
F2
Bad Connection or Indoor Coil Sensor Failure. Please contact qualified professionals for
service.
F3
Bad Connection or Outdoor Ambient Sensor Failure. Please contact qualified
professionals for service.
F4
Bad Connection or Outdoor Coil Sensor Failure. Please contact qualified professionals
for service.
F5
Bad Connection or Discharge Sensor Failure. Please contact qualified professionals for
service.
H3
Low Refrigerant Charge, Blocked Capillary, or Compressor Motor Failure. Please contact
qualified professionals for service.
H5
IPM Module Temperature Too High, High Ambient, Low Voltage, or Bad Connections.
Please contact qualified professionals for service.
H7
High Pressure, Low Voltage, or Bad Connections. Please contact qualified professionals
for service.
U7
Bad Connection, Solenoid Failure, or Valve Malfunction. (Heat Pumps Only). Please
contact qualified professionals for service.
E1
Too much refrigerant or High Ambient conditions or low airflow.
professionals for service.
■ When below phenomenon occurs, please turn off air conditioner and discon-
for service.
● Power cord is overheating or damaged.
● There’s abnormal sound during operation.
● Circuit break trips off frequently.
● Air conditioner gives off burning smell.
● Indoor unit is leaking.
■ If the air conditioner operates under abnormal conditions, it may cause
WARNING
When air conditioner status is abnormal, temperature indictor on indoor unit will
blink to display corresponding error code. Please refer to below list for identification
of error code.
Indoor
display
Error code
Above indicator diagram is only
for reference. Please refer to
actual product for the actual
indicator and position.
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