Daikin R42NUY2S - Page 378

Troubleshooting by Remote Controller Si20-701_B
371
Troubleshooting
Refer to P.460.
Is the resistance
valve is above the
criteria?
"
U2" is
displayed?
Is the
power
supply voltage
between 200
±10% VAC?
YES
YES
NO
NO
NO
NO
Is the fan
motor normal?
(Refer to
troubleshooting
"
E7" )
Replace the fan
motor.
NO
NO
YES
YES
YES
Field factors
Replace the fan
motor.
Correct the
wiring.
Remove the connector for
fan motor on the PCB,
and operate.
Is the wiring
correct?
CHECK 2
A
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
CHECK 2