4 Electrical checks of main parts
Outdoor unit
SMGB0135 rev.0 - 06/2020
43
4
Checking Fan Motor procedure
Shut down supply and wait for 10 minutes for voltage to go down. Confirm it by measuring
the DC voltage (must be below 10 V). Then disconnect fan motor connector (CN24).
Confirm the abnormality or lock by rotating the propeller fan manually.
Measure fan motor connector resistance (between pin 1-3, 3-5,
5-1) (*) Normal value 20~50 Ω
Replace electrical unit
Replace fan motor
Normal
Normal
Abnormal
Abnormal
Reconnect again fan motor connector (CN24).
?
N O T E
(*) Please confirm above checking procedure if found 2A fuse blown. If fan motor is broken, replace both electrical unit and fan motor.
!
C A U T I O N
• Beware of electric shock due to high voltage when conducting an operation check.
• Power supply for DC fan motor and compressor is common (DC300~330V).
4.1.8 Fan motor
Power source
DC: 120 - 380 V
Output
47 W
Connection
M
M
M
White (V)
Black (W)
Red (U)
4.1.9 Reactor
Rating
15 (mH) 250 mΩ MAX (20 ºC)
