Daikin VRV IV-S RXTQ-TAVJU Series Service Manual page 153

SiUS331604E
Troubleshooting
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power
supply, and then wait for
a period of 10 minutes.
Are there
YES
any foreign matters
around the fan?
NO
Is the
connector properly
NO
connected to the indoor
unit main PCB?
(∗1)
YES
By
disconnecting the
NO
connector, the fan can be
lightly rotated by
hand.
YES
Disconnect the connector
from the fan motor, and then
make measurement of
resistance between pins.(∗2)
Is the
resistance
NO
between the pins less than
the judgement
criteria?
YES
Troubleshooting by Error Code
Remove the foreign matters.
Properly connect the connector.
Replace the fan motor.
Replace the indoor unit main
PCB (A1P).
Replace the fan motor and the
indoor unit main PCB (A1P).
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