Power Supply Voltage Abnormality - Daikin VRV-WIII RWEYQ72PTJU Service Manual

Troubleshooting by Indication on the Remote Controller
3.6

Power Supply Voltage Abnormality

A8
Error Code
Applicable
FXMQ07~48P
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 or less, or 386V or more.
Conditions
 Defective power supply voltage.
Supposed
 Defective connection on signal line.
Causes
 Defective wiring.
 Instantaneous blackout, others.
Troubleshooting
166
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Check the condition of
the power supply.
Check if power
supply voltage is
208~230V ± 10%.
Check if there is
power open phase
or defective wiring.
Check if power
supply voltage
unbalance is within
6V.
There are
problems on
YES
the condition of
power supply
described
above.
NO
A8
" "
YES
Reoccurrence of
error.
NO
Correct any fault.
Check and correct each wiring.
It is possible to have external
factor, such as brownout and
instantaneous blackout.
Service Diagnosis
SiUS30-1301