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Models: AGHG09KVCA, AGHG12KVCA, and AGHG14KVCA
Check point 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.
Check point 2. Check resistance of indoor fan motor
Refer to below. Circuit-test “Vm” and “GND” terminal
NOTE:
Vm: DC voltage, GND: Earth terminal
→ If they are short-circuited (below 300 kΩ), replace indoor fan motor and controller PCB.
Upper fan motor
Pin number
(wire color)
Terminal function
(symbol)
1 (Blue)
Revolution pulse (PG)
2 (Yellow)
Speed command (Vsp)
3 (White)
Control voltage (Vcc)
4 (Black)
Earth terminal (GND)
5
No function
6 (Red)
DC voltage (Vm)
Lower fan motor
Pin number
(wire color)
Terminal function
(symbol)
1 (Blue)
Revolution pulse (PG)
2 (Yellow)
Speed command (Vsp)
3 (White)
Control voltage (Vcc)
4 (Black)
Earth terminal (GND)
5
No function
6
No function
7 (Red)
DC voltage (Vm)
5-4. Indoor unit fan motor
- (03-92) -
5. Service parts information
TROUBLESHOOTING
TROUBLESHOOTING
Summary of Contents for ABHG18KRTA
Page 4: ......
Page 5: ...1 GENERAL INFORMATION 2022 08 08 SR_CH01_MU004EG_06 ...
Page 59: ...2 TECHNICAL DATA AND PARTS LIST 2022 08 08 SR_CH02_MU004EG_11 ...
Page 62: ......
Page 213: ...3 TROUBLESHOOTING 2022 08 08 SR_CH03_MU004EG_07 ...
Page 216: ......
Page 316: ...6 2 Outdoor unit 03 100 6 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...
Page 317: ...4 CONTROL AND FUNCTIONS 2022 04 13 SR_CH04_MU004EG_08 ...
Page 320: ......
Page 403: ...5 FILED WORKING 2022 08 08 SR_CH05_MU004EG_08 ...