Sharp AY-X36RU Service Manual page 22

AY-X36RU
AE-X36RU
Out of step diagnosis for the compressor (AP1: the control board of the outdoor unit)
9.
Mainly detect:
● Whether the system pressure is too high?
● Whether the input voltage is too low?
Out of step occurs once the
unit is powered on.
Is stop time of the
N
compressor longer than
3 minutes?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Is the connection made in clockwise
direction?
N
Connect the
wires correctly
Replace the control
Y
Is the problem fixed?
Replace the
compressor
Y
Y
panel AP1
N
End
Out of step occurs in
operation
Is the outdoor fan working
N
normally?
Y
Y
Is the outdoor unit blocked
by any objects?
N
N
Replace the
control panel AP1
Y
Is the problem fixed?
N
Replace the
compressor
End
22
Measure the
electric resistance between any two
fan terminal by ohmmeter, check if the value of
electric resistance is less than
1KOhm.
Remove objects.
Y
Replace the
outdoor fan