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Troubleshooting
Error codes on variable speed models
Once the indoor and outdoor units have been turned off due to a fault, the error code will be displayed
on the remote controller. In case the protection system is normal, no fault code will be displayed on the
indoor unit.
no fault code will be displayed on the indoor unit. Among other things, the remote controller does not
send warnings automatically, so it is necessary to press the CHECK button to display the corresponding
error codes.corresponding fault codes. The remote control displays the fault codes directly.
Once the faults have been cleared, the indication on the display will disappear automatically.
ERROR
CODE
A1
Indoor unit room temperature sensor
failure
A2
Indoor evaporator core temperature
sensor failure
A3
Indoor unit liquid pipe temperature
sensor failure
A4
Failure of indoor unit gas pipe tempe-
rature sensor failure
A5
Failure during draining.
A6
Indoor unit fan motor failure
A8
Failure of EEPROM module of indoor
unit
DESCRIPTION
POSSIBLE CAUSE
•
Damage to the indoor unit's room temperature sensor.
•
Bad contact of the room temperature sensor in the indoor unit.
•
Damage to the wiring of the indoor unit's room temperature
sensor.
•
Damage to the base plate of the indoor unit.
•
Damage to the indoor unit's temperature sensor.
•
Bad contact of the temperature sensor in the indoor unit.
•
Damage to the indoor unit temperature sensor wiring.
•
Damage to the indoor unit's base plate.
•
Damage to the indoor unit's liquid pipe temperature sensor.
•
Bad contact of the liquid pipe temperature sensor in the indoor
unit.
•
Damage to the wiring of the liquid pipe temperature sensor in
the indoor unit.
•
Damage to the main base plate of the indoor unit.
•
Damage to the gas pipe temperature sensor of the indoor unit.
•
Damage to the gas pipe temperature sensor of the indoor unit.
•
Bad contact of the gas pipe temperature sensor in the indoor
unit.
•
Damage to the wiring of the indoor unit's gas pipe temperature
sensor.
•
Damage to the base plate of the indoor unit.
•
Switch is disconnected or wiring is damaged.
•
Wrong model parameter setting
•
Drain plug
•
Pump damage
•
Low voltage
•
Poor wiring
•
Damage to the base plate of the indoor unit
•
Damage to the motor
•
The motherboard of the indoor unit is broken.
•
EEPROM module is broken.
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