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22
Malfunction Codes
Issues Self check Solutions
Cracking sound: Normal
expansion and contraction of
plastic and metal parts caused
by temperature changes during
operation.
Air conditioner was
just turned on or
turned off or adjusted
temperature?
Abnormal noises
Error Code Malfunction Name
● If you notice or experience any of the following conditions, please turn off the air
conditioner, disconnect from power, discontinue use, and contact support
immediately.
○ The power cord is overheating or otherwise damaged
○ Abnormal sound during operation
○ A strange odor is emitted from the unit
○ Excessive water leakage the unit
● Do not attempt to repair or retrofit the air conditioner by yourself. All repairs
must be performed by qualified individuals.
F0
F1, F2, F4
H3, E8
E2
E5
E6
H6
P5, H5
PL
Refrigerant leakage protection
Temperature sensor malfunction
Overload protection
Antifreezing protection
Overcurrent protection
Communication malfunction
Internal fan motor do not operate
IPM protection
Voltage of DC bus-bar is too low
Refill the refrigerant.
Remove the unit from power for a few minutes.
Plug the unit back in to determine if the
malfunction code is still present.
1. Check and make sure the supply voltage is
stable and consistent with the rated range.
2. Check if the inlet/outlet is blocked, remove the
blockage.
Reconnect the line according to wiring diagram.
After powerring off, turn the fan blades by hand
to ensure the blades are running smoothly.
1. Check if the filter or the inlet/outlet is
blocked, remove the blockage.
2. The temperature sensor or the mainboard
is broken.
Measure the voltage of position L and N on wiring
board, if the voltage is higher than 150V, turn on
the unit after the supply voltage is increased to the
normal range.
Solutions
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