Argoclima AER522QC Technical Data & Service Manual page 30

8-3-2. Only compressor does not run.
Check compressor motor
•
capacitor.
(C2,C3 or C3,C4)
Measure resistance of
•
compressor motor winding.
Check Timer in outdoor unit
Operate either indoor unit A or B.
Check to see if the lamp " PW " is on.
Check to see if the other lamp " UP "
lights up as well.
Confirm that the timer dial has been
set to " 3 min " as shown in figure right.
Overload relay is working.
Temperature of compressor is
abnormally high.
Refrigerant gas shortage.
Rotor may be locked up.
NO
YES
YES
(OLR 1 to 4)
YES
YES
NO
Replace the timer.
UP min PW
1 2
0 3
H3Y
25
YES
Charge refrigerant gas (R407C).