Specifications

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Troubleshooting 155
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Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
(V3169)
The total
of indoor units
displaying "UA" and
indoor units connected to the
same refrigerant system is
within connectable
number of
unit∗
Normal
NO
NO
There are too many indoor units
within the same refrigerant
system.
Push and hold the RESET
button on the outdoor unit
PC board for 5 seconds.
YES
Is the outdoor
PC board replaced
to spare parts PC
board ?
YES
The setting after replacing spare
PC board has not been set yet.
Refer page 70.
NO
YES
Does a malfunction occur?
Replace outdoor unit PC board
(A1P).
Matches the refrigerant type of
indoor and outdoor unit.
NO
YES
Does the
refrigerant type of indoor
and outdoor unit
match?