Daikin RXSQ24TAVJU Service Manual page 254

Troubleshooting by Error Code
Troubleshooting
241
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is
electricity
being introduced
for the first time after
installation or after an indoor
or outdoor unit PCB
has been
replaced?
NO
Is indoor-
outdoor unit
transmission wiring
normal? (∗1)
YES
Press and hold the RESET
(BS5) button on the outdoor
unit PCB for 5 seconds
Does an error occur?
YES
Does a UH error
occur for all indoor
units in the system?
YES
∗1: Refer to installation manual for correct "indoor unit and outdoor unit connection
wiring".
∗2: Automatic address refers to the automatic designated address of indoor unit and
outdoor unit when connected to the power after installation or wiring replacement
(with RESET (BS5) button pressed for more than 5 seconds).
Does
an error
occur even after
12 minutes elapses
YES
from the time when
electricity is introduced
to indoor and
outdoor
units?
YES
NO
NO
NO
SiUS331708EA
NO
Normal
After fixing incorrect wiring,
press and hold the RESET
(BS5) button on the outdoor
unit PCB for 5 seconds.
∗ The unit will not run for up to
12 minutes.
Normal
Replace the indoor unit PCB.
Replace the outdoor main
PCB (A1P).
Service Diagnosis