Heat Controller BG-81G Service Manual page 27

Service Manual
Not heating or not heating enough. (Cooling and Electric Heater)
Check the mode.
No
Check whether the airflow speed is too low.
No
Check the heat load of the room.
No
Check the specification of PTC-heater.
Fan motor speed can't change. (Electric Control)
Check the wiring.
No
Check the capacitor of fan motor. Replace if failed.
No
Replace the PCB.
No
Check the resistance of fan motor and replace the motor if failed.
Fan motor speed can't change. (Mechanical Control)
Check whether the selector is damaged.
No
Check whether the ca pacitor of fan motor is in the rang e from 95 % to
105% of rated capacity. Replace the capacitor if failed.
No
Check the resistance of fan motor and replace if failed.
Room Air Conditioner with R-410A
26
Heat Controller, Inc.