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• E2 Freeze Protection
Freeze protection is normal protection but not abnormal malfunction. If freeze protection occurs fre-
quently during operation, please check if the indoor filter is with filth blockage or if the indoor air outlet is abnor-
mal. The user is required to clean the filter, check the air outlet and air return pipe periodically to ensure smooth air
return and air outlet.
• E3 stands for three statuses:
(1) Low pressure protection;
(2) Refrigerant lacking protection;
(3) Refrigerant recycling mode;
a) If enter refrigerant recycling mode through special operation, the displayed E3 is not an error code. It will
be eliminated when exiting refrigerant recycling mode.
b) If you do not want to have refrigerant lacking protection, you can enter the debugging mode through
wired controller and then cancel the refrigerant lacking protection mode.
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