Daikin RXSQ24TAVJU Service Manual page 240

Troubleshooting by Error Code
Troubleshooting
227
A
Outdoor unit PCB
microcomputer monitor
(HAP) blinks.
YES
Operation ready
NO
lamp (H2P) is
blinking.
YES
Lamp does not go off
for 12 minutes or
more.
NO
Is
indoor-outdoor
unit transmission wiring
normal?
YES
NO
YES
NO
SiUS331708EA
Replace the outdoor main
PCB (A1P).
Press and hold the RESET
(BS5) button on the outdoor
unit PCB for 5 seconds.
Fix the indoor-outdoor
unit transmission wiring.
Replace the outdoor main
PCB (A1P).
Service Diagnosis