Daikin VRV IV-S RXTQ-TAVJU Series, Service Manual

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SiUS331604E Troubleshooting by Error Code
Service Diagnosis 174
Troubleshooting
Refer to page 238.
NO
YES
YES
YES
NO
NO
YES
NO
NO
YES
YES
NO
YES
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Is the
voltage between L1
and N of power terminal board
X1M within the power supply
voltage ±10%?
Does the fan
motor connector
disconnect?
Are there
any obstacles around
the fan?
Is pin-to-pin
resistance greater than
the threshold value?
Is fuse F6U blown?
Is fuse F6U blown?
Do
the fan blades
spin smoothly by hand after
disconnecting the fan
motor connector?
CHECK 16
Check the fan motor connector.
Calibrate the power voltage.
If L1 and N phases are
disconnected, replace the
power distribution box.
Connect the connector.
Remove the obstacles.
Replace the fan motor.
Replace the fan motor.
Replace the outdoor unit main
PCB (A1P).
Replace the fuse.
Replace the fuse.
CHECK 16