PART IV
TROUBLESHOOTING - NO FAN
E-43
ENGLISH
Replace the fan motor
If the motor still does not run correctly after replacing the motor capacitor, you will go ahead to replace the fan motor.
To replace the fan motor see
IMPORTANT PART-FAN
MOTOR SYSTEM on page 27.
Incorrect air flow
Step 3
Incorrect air flow
When the 3 speed of the fan motor is not correct, you will need to check the main circuit board, fan motor and the power source.
Check the main circuit board
1. Open the bottom plate.
2. Set the ohmmeter at the range of 200V ac. Check the Low, Medium and High speed output voltage on the main circuit board.
They should read close to 120V ac. If not, you will need to replace the main circuit board.
Make sure the fan motor speed must
be set at the checking speed when you check the fan motor connection voltages.
1. At Low speed, check the
voltage between pin 5 and pin 7.
2. At Medium speed, check the
voltage between pin 3 and pin 7.
3. At High speed, check the
voltage between pin 1 and pin 7.
