Daikin E Series User Manual

Troubleshooting for BP Unit SiAU18-715
354 Troubleshooting
Troubleshooting
Check No.14
Refer to P.356
Turn power supply off, and turn
on again.
YES
YES
Correct the indoor unit-
outdoor unit connection
wires.
Normal
(Address Setting was
not conducted)
NO
(Q0548)
NO
YES
YES
NO
NO
Check the indoor unit-outdoor unit
connection wires.
Check the outdoor unit's LED A.
Check the voltage of the indoor
unit-outdoor unit connection wires
between No. 1 and No. 2, and
between No 2 and No. 3.
Is there any wiring error?
NO
YES
Push and hold the RESET button on
the outdoor unit PCB for 5 seconds
Does the malfunction
occur again?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
NO (ON or OFF)
Check for
indoor unit
microcomputer
normal HAP
YES
Faulty indoor unit PCB
or malfunction of power
supply system.
Resets normally.
Could result from
external cause
(e.g. noise).
Faulty BP unit PCB or
malfunction of power
supply system.
Replace the connection
wires between the
indoor and outdoor
units.
Locate the cause of the
disturbance of the power
supply waveform, and
correct it.
Replace indoor unit
control PCB.
Could result from
external cause
(e.g. noise).
Turn the power supply off once
and then back on.
Is HAP blinking?
Is LED A blinking?
Is the voltage 0 V?
Is there any disturbance?
Is LED A blinking?
Is HAP blinking?
NO
YES
Check No. 14
Check power supply waveform.

Daikin E Series Specifications

General

Brand	Daikin
Model	E Series
Category	Air Conditioner
Language	English