SERVICE PARTS INFORMATION 5
Check Point 1 : Check rotation of Fan
Outdoor unit fan motor
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.
Check Point 2 : Check resistance of Outdoor Fan Motor
Refer to below. Circuit-test "Vm" and "GND" terminal.
(Vm: DC voltage, GND: Earth terminal)
>>If they are short-circuited (below 300 k ), replace Outdoor fan motor and Main PCB.
Pin number
(wire color)
1 (Red)
2
3
4 (Black)
5 (White)
6 (Yellow)
7 (Brown)
SERVICE PARTS INFORMATION 4
Check Point 1 : Check rotation of Fan
Indoor unit fan motor
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.
Check Point 2 : Check resistance of Indoor Fan Motor
Refer to below. Circuit-test "Vm" and "GND" terminal.
(Vm: DC voltage, GND: Earth terminal)
>>If they are short-circuited (below 300 k ), replace Indoor fan motor and Controller PCB.
Pin number
(wire color)
1 (Blue)
2 (Yellow)
3 (White)
4 (Black)
5
6 (Red)
02-28
Feed back (FG)
Speed command (Vsp)
Control voltage (Vcc)
Earth terminal (GND)
No function
DC voltage (Vm)
Terminal function
(symbol)
DC voltage (Vm)
No function
No function
Earth terminal (GND)
Control voltage (Vcc)
Speed command (Vsp)
Feed back (FG)
Terminal function
(symbol)
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