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1. Check if fan terminal
OFAN is connected well
2. Test if resistance value
of any two terminals is less
than 1k
ƻ
with ohmic meter
If the indoor and outdoor
fan work well?
After the unit de-
energized for 20min
Replace
control board
AP1
If the radiating of outdoor
and indoor unit is well?
Improve the
radiating
environment of
unit
Replace
outdoor fan
Y
Replace fan
capacitor C1
Anti-high temperature,
overload protection
Normal protection, please use
it after improve the outdoor
ambient temperature
If the outdoor ambient temperature is
higher than 53 ºC?
N
Y
N
Y
N
End