Daikin FTXS20K2V1B Service Manual page 81

SiBE041134
Troubleshooting
Check No.03
Turn off the power.
Refer to P.102
(Unplug the power cable or turn
the breaker OFF.)
Check the connector for
connection.
Rotate the fan.
Check No. 03
Check the fan motor for
breakdown or short circuit.
Turn the power on again.
Check No. 03
Check the motor control voltage.
Check No. 03
Check the indoor unit PCB for
rotation pulse.
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
OK?
YES
YES
Foreign matters in or
around the fan?
NO
NO
Fan rotates smoothly?
YES
NO
Resistance OK?
YES
Is the motor control
NO
voltage 15 VDC
generated?
YES
NO
Is the rotation pulse
generated?
YES
Note: The motor may break when the
motor connector is disconnected
while remaining power supply.
(Turn off the power supply before
connecting the connector also.)
∗ To secure the connection,
once disconnect the connector
and then reconnect it.
Troubleshooting
Correct the connection.
Remove the foreign matters.
Replace the indoor unit PCB (1).
Replace the indoor fan motor.
Replace the indoor unit PCB (1).
Replace the indoor fan motor.
Replace the indoor unit PCB (1).
(R16048)
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