Daikin RTSQ20PY1 Service Manual page 333

SiBE31-801_C
Troubleshooting
∗1: Check the correct wiring "indoor-outdoor" and "outdoor-outdoor" by Installation Instruction.
∗2: What is Auto Address?
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is electricity being
introduce for the first
time after installation
or after an indoor or
outdoor unit PCB has
been replaced?
NO
Is indoor - outdoor
and outdoor - outdoor
unit transmission
wiring normal?
YES
Push and hold the RESET
button on the outdoor unit
PCB for 5 seconds.
Does a malfunction
occur?
YES
Disconnect the
outdoor-outdoor unit
transmission wiring to
create the one-
system status, and
then check whether or
not the system is
normal.
NO
UH
Does a " "
malfunction occur for
all indoor units in the
system?
YES
This is the address automatically assigned to indoor units and outdoor units after initial power supply upon
installation, or after executing rewiring (Keep pressing the RESET button for more than 4 seconds).
Troubleshooting by Indication on the Remote Controller
Does a malfunction
occur even after 12
YES
minutes elapses from the
time when electricity is
introduced to indoor and
outdoor units?
NO
NO
YES
NO
NO
Normal
After fixing the incorrect wiring,
push and hold the RESET
button on the master outdoor
unit PCB for 5 seconds.
∗ The unit will not run for up to
12 minutes.
Normal
Mount the DIII-NET expander
adaptor.
Replace the indoor unit PCB.
Replace the outdoor unit PCB
(A1P or A3P).
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