Daikin RTSQ20PY1 Service Manual page 309

SiBE31-801_C
Troubleshooting
Troubleshooting
Troubleshooting by Indication on the Remote Controller
A
Turn ON the power supply,
and then press the ON button.
The system enters standby
mode before the outdoor unit
fan starts rotating.
NO
The system enters standby mode
before the compressor completes
startup sequence.
NO
The malfunction
U2
" " recurs.
NO
YES
YES
YES
Replace the inverter PCB.
(Faulty noise filter)
Replace the inverter PCB.
If the inverter PCB
significantly gets damaged,
check for the compressor.
Check for all wirings.
Continue operation.
External factors such as
instantaneous power failure
are supposed.
298