Daikin RMXS-L Series Service Manual page 172

Troubleshooting for CTXS, FTXS, CDXS, FDXS Series
Troubleshooting
Check No.04
Refer to P.166
163
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the power supply voltage.
Is the
voltage fluctuation
within ±10% from the
rated value?
YES
Start operation.
Does the fan rotate?
NO
Turn off the power supply and
rotate the fan by hand.
Does the fan rotate
smoothly?
YES
Turn the power on and check the
fan motor voltage.
(immediately after restart)
Voltage as rated?∗
YES
Check the capacitor's continuity.
Is there continuity?
NO
NO
YES
Check No. 04
Check Hall IC
Is there an output?
NO
YES
Check the fan motor voltage.
Voltage as rated?∗
YES
∗ Measure the voltage
between the red and black
lead wires of the fan motor,
and check if the maximum
voltage reaches the rated
voltage.
NO
YES
SiUS181305E
Correct the power supply.
NO
Replace the fan motor or the
indoor unit PCB.
Replace the fan motor.
NO
Replace the indoor unit PCB.
Replace the fan motor.
Replace the indoor unit PCB.
Replace the indoor unit PCB.
Replace the fan motor.
(R19123)
Troubleshooting