20
AY-X36RU
AE-X36RU
7.
High temperature and overload protection diagnosis (AP1: the control board of the outdoor unit)
Mainly detect:
● Is outdoor ambient temperature in normal range?
● Are the outdoor and indoor fans operating normally?
● Is the heat dissipation environment inside and outside the unit is good?
End
Y
Y
N
Y
N
N
Y
N
Overheat and high
temperature protection
Is outdoor ambient temperature higher than 53?
20 minutes after the complete
unit is powered off.
Is heat dissipation of the indoor unit
and outdoor unit abnormal?
Normal protection, please operate
it after the outdoor ambient temp-
erature is normalized.
Improve the heat
dissipation environ-
ment of the unit
Does the outdoor fan work normally?
1. Check if the fan terminal OFAN
is connected correctly
2. Measure the electric resistance
between any two fan terminal by
ohmmeter, check if the value of
electric resistance is less than
1KOhm.
Replace the
control panel AP1
Replace the
outdoor fan
