Daikin RTSQ20PY1 Service Manual page 298

Troubleshooting by Indication on the Remote Controller
Troubleshooting
287
A
Disconnect the sensor connector
(X2A or X4A) from the fan motor,
and then turn ON the power supply.
Is any malfunction
code other than
LC
" " displayed?
NO
The micro-computer
normal monitor (green)
of the main PCB (A1P)
is blinking.
YES
The micro-computer
normal monitor (green)
of the main PCB (A4P)
is blinking.
YES
LC
The malfunction
recurs.
NO
YES
NO
NO
YES
SiBE31-801_C
Take countermeasures
following the displayed
malfunction code.
LC
Not the malfunction.
Check the malfunction
code again.
Replace the inverter
PCB (A4P).
* If the replaced PCB
has significant
damage, the
compressor is
probably get faulty. In
this case, carry out
inspections on the
compressor again.
Replace the main PCB
(A1P).
Continue operation.
(It is supposed that the
malfunction results from
causes such as
instantaneous power
failure.)
Troubleshooting