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Troubleshooting by Remote Controller
SiBE341027
178
Service Diagnosis
Troubleshooting
Note:
*1. Check the correct wiring “indoor-outdoor” and “outdoor-outdoor” by Installation Manual.
What is Auto Address?
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
button for
more than 4 seconds).
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
NO
YES
YES
After fixing the incorrect
wiring, press 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
NO
Is electricity being
introduce for the first
time after installation
or after an indoor or
outdoor unit PCB has
been replaced?
Is indoor - outdoor and
outdoor - outdoor unit
transmission wiring
normal? (*1)
YES
NO
Normal
NO
Does a error reoccur?
Install the DIII-NET extension
adaptor.
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
Does a “
UH
” error
occur for all indoor
units in the
system?
YES
NO
Does a error occur
even after 12 minutes
elapses from the time
when electricity is
introduced to indoor
and outdoor units?
YES
Replace the indoor unit PCB.
Replace the outdoor unit PCB.
Press and hold the RESET
button on the outdoor unit
PCB for 5 seconds.
RESET