Test 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
Test 2 : Check resistance of Outdoor Fan Motor
Refer to below. Circuit-test "Vm" and "GND" terminal.
(Vm: DC voltage, GND: Ground terminal)
>>If they are short-circuited (below 300 k ), replace Outdoor fan motor and Main PCB.
(SERVICE PARTS INFORMATION 10)
Pin number
(wire color)
1 (Red)
2
4 (Black)
5 (White)
6 (Yellow)
7 (Brown)
DC voltage (Vm)
No function
3
No function
Ground terminal (GND)
Control voltage (Vcc)
Speed command (Vsp)
Feed back (FG)
Terminal function
(symbol)
SERVICE PARTS INFORMATION 6
Outdoor unit fan motor
02-73
