Abnormal Power Supply Voltage - Daikin RZQ Series FCQ20EVA Service Manual

SiME281501E
4.9

Abnormal Power Supply Voltage

A8
Error Code
Applicable
FBQ
Models
Method of Error Detect error checking the input voltage of fan motor
Detection
Error Decision
When the input voltage of fan motor is 150V and less, or 386V and more
Conditions
 Power supply voltage error
Supposed
 Defective connection on signal line
Causes
 Defective wiring
 Instantaneous blackout, others
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
Check the condition of the power
supply.
Check if power supply voltage is
220V - 240V ± 10%.
Check if there is power open phase
or defective wiring.
Check if power supply voltage side
unbalance is within 6V.
problems on the condition of
power supply described
Service Diagnosis
There are
YES
above.
NO
Error is
YES
displayed again.
NO
Troubleshooting by Remote Controller
Correct any fault.
Check and correct each wiring.
It is possible to have external
factor, such as brownout and
instantaneous blackout.
98