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Troubleshooting by Indication on the Remote Controller
345
Note:
∗
1. Check the correct wiring “indoor-outdoor” and
“outdoor-outdoor” by Installation manual.
∗
2. 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 RESET button for more than 4
seconds).
YES
Disconnect
the outdoor-
outdoor unit
transmission wiring to
create the one-system
status, and then
check whether or
not the
system is
normal.
YES
Mount the DIII-
NET expander
adaptor.
Does a
“
UH
” error occur
for all indoor units in
the system?
NO
NO
Replace the
indoor unit PCB.
Replace the
outdoor unit
PCB.
A