PART V TROUBLESHOOTING
5-14
ENGLISH
Fig. 5.3.1-4 Fan motor capacitor (6uf, 250V).
Fig. 5.3.2-2 Check the voltage output of the main circuit board to the
fan motor. The SPEED is set at the checking speed.
Fig. 5.3.2-1 Set the ohmmeter
in the range of 200V ac.
Check the motor capacitor and fan motor
If the motor cable output voltages of the main circuit board
are correct, you have to go ahead to check the fan motor
capacitor or fan motor (Fig. 5.3.1-4).
- Remove the unit upper cover and fan motor front cover to
find the motor capacitor (See
6.8 REPLACE THE FAN
MOTOR CAPACITOR
).
- If the motor still does not run correctly after replacing the
motor capacitor, you will go ahead to replace the fan motor.
(See
6.7 REPLACE THE FAN MOTOR
).
Hint:
When the capacitor is damaged you can hear a buzz
sound from the fan motor, however if the fan motor is broken
there is no any sound.
5.3.2 INCORRECT AIR FLOW
The fan motor has three speeds air flow, however the air flow is incorrect, you will need to check the main circuit
board, fan motor and the power source.
Check the main circuit board
- Open the bottom plate.
- Set the ohmmeter at the range of 200V ac (Fig. 5.3.2-1). Check the Low, Medium and High speed output voltage on
the main circuit board. They should read close to 120V ac. If not, you need to replace the main circuit board.
An important notice:
When you check the output voltages of the main circuit board to the fan motor, the fan motor speed must be
set at the checking speed (Fig. 5.3.2-2).
Check the fan motor
- Remove the unit upper cover and the fan motor front cover (See
6.7 REPLACE THE FAN MOTOR
).
- Check if the motor wire connection is loosened or connected correctly or there are any wrong connections of the
wires.
Check the power source
Sometimes, the power source is not correct. You can check it with ohmmeter, it should be close to 120V ac. If not, do
not operate the unit.
Motor capacitor
L speed
M speed
H speed
Summary of Contents for R200T
Page 69: ...ENGLISH NOTES ...
