Daikin VRV IV-S RXTQ-TAVJU Series Service Manual page 187

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