Daikin RTSQ20PY1 Service Manual page 239

SiBE31-801_C
Troubleshooting
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Turn off the power and wait for
10 minutes.
There is a foreign
matter around the
fan.
NO
The fan motor
connectors (X1A and
X2A) of the fan PCB
(A2P) are disconnected.
NO
The connectors
between the indoor
PCB (A1P) and the fan
PCB (A2P) are
disconnected.
NO
The fuse (F3U,
white) on the fan
PCB (A2P) has no
continuity.
YES
The fan can be moved
lightly by hand after the
fan motor connector of the
fan PCB (A2P) is
removed.
YES
The resistance between
the power wire terminals
of the fan motor and motor
frame (metal part) is 1 MΩ
or below.
NO
Remove the power wire
connector from the fan motor
and measure the resistance
between U and V, V and W, and
W and U phases (*1).
A
Troubleshooting by Indication on the Remote Controller
YES
YES
YES
NO
NO
YES
Remove the foreign matter.
Connect correctly.
Connect correctly.
Replace the fan PCB (A2P).
Replace the fan motor.
Replace the fan motor.
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