Abnormal Power Supply Voltage - Daikin ERQ Service Manual

Troubleshooting by Indication on the Remote Controller
3.4

Abnormal Power Supply Voltage

A8
Remote
Controller
Display
Applicable
FXMQ40~125P
Models
Method of Detect malfunction checking the input voltage of fan motor.
Malfunction
Detection
Malfunction
When the input voltage of fan motor is 150V and below, or 386V and above.
Decision
Conditions
Supposed The possible causes are:
Causes
Troubleshooting
168
Power-supply voltage malfunction.
Connection defect on signal line.
Wiring defect.
Instantaneous blackout, others.
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the condition of the
power source.
Check if power-supply voltage
is 220V - 240V ± 10%.
Check if there is power open
phase or faulty wiring.
Check if power-supply voltage
side unbalance is within 6V.
There
are problems on the
condition of power source
described
above.
NO
" & "
Reoccurrence of
malfunction.
NO
YES
YES
: http://splitoff.ru/tehn-doc.html
ESIE09-05
Correct any fault.
Check and correct each
wiring.
It is possible to have external
factor, such as brownout and
instantaneous blackout.
Troubleshooting