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 Indoor 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 Indoor fan motor and Controller PCB.
For Compact Cassette Type
For Compact Wall Mount, Wall Mount Type
For Slim Duct Type
For Floor Type
SERVICE PARTS INFORMATION 5
Indoor unit fan motor
Pin number
(wire color)
1 (Blue)
2 (Yellow)
3 (White)
4 (Black)
5
6 (Red)
Feed back (FG)
Speed command (Vsp)
Control voltage (Vcc)
Ground terminal (GND)
No function
DC voltage (Vm)
Terminal function
(symbol)
Pin number
(wire color)
1 (Red)
3 (White)
4 (Black)
7 (Yellow)
6
8 (Brown) Feed back (FG)
Control voltage (Vcc)
2
No function
Ground terminal (GND)
Speed command (Vsp)
No function
5 No function
DC voltage (Vm)
Terminal function
(symbol)
Pin number
(wire color)
1 (Blue)
2 (Yellow)
3 (White)
4 (Black)
5
7 (Red)
Feed back (FG)
Speed command (Vsp)
Control voltage (Vcc)
Ground terminal (GND)
No function
6 No function
DC voltage (Vm)
Terminal function
(symbol)
Pin number
(wire color)
1 (Blue)
2 (Yellow)
3 (White)
4 (Black)
5
6 (Red)
Feed back (FG)
Speed command (Vsp)
Control voltage (Vcc)
Ground terminal (GND)
No function
DC voltage (Vm)
Terminal function
(symbol)
02-54
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