A8" Abnormal Power Supply Voltage - Daikin SkyAir Service Manual

Troubleshooting by Remote Controller Display / LED Display

5.10 "A8" Abnormal Power Supply Voltage

A8
Remote
Controller
Display
LED indications The table below shows the LED indications.
Operation
Normal
Malfunctioning
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
166
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
"A8"
Reoccurrence
of malfunction.
NO
HAP (green)
5
5
YES
YES
SiBE28-804
HBP (green)
5
5
Correct any fault.
Check and correct each wiring.
It is possible to have external
factor, such as brownout and
instantaneous blackout.
Troubleshooting