Daikin RZQ Series FCQ20EVA Service Manual page 153

SiME281501E
Troubleshooting
Diagnosis of incorrect or broken/disconnected wiring. If the LEDs on the indoor unit PCB are OFF, it indicates
that the transmission wiring between indoor and outdoor units may be incorrect or broken/disconnected.
Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
Is the power
supply voltage within the
standard range?
YES
Is there
a wrong wiring
type, loose terminal or
contact failure in the transmission
wiring between the indoor
and outdoor
units?
YES
Is any
NO
optional accessory (∗1)
connected?
YES
Is the
power for the
optional accessory supplied
from between 1 and 2 on
terminal block
X1M?
YES
Is HAP on the
outdoor unit PCB blinking?
NO
Turn OFF the power supply and
disconnect the connector of the
outdoor unit fan motor. Then power
ON again.
Is HAP blinking?
NO
A
Note:
1. Optional accessories refer to adaptor for wiring, auto grill and other accessories.
Service Diagnosis
NO
NO
NO
YES
YES
Troubleshooting by Remote Controller
Field factor
Wire correctly and securely
fasten the terminal screws.
Wire correctly.
B
Replace the outdoor unit fan
motor.
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