Panasonic CU-8ME1XPK - Excessive Number of Indoor Units

PACD011001C2 Troubleshooting
Troubleshooting UM Combination “MA1R Series” Using R-407C 529
3.32 Excessive Number of Indoor Units
Remote Controller
Display
UA
Supposed Causes
„
Excess of connected indoor units
„
Defect of outdoor unit PC board (A1P)
Troubleshooting
The number of indoor units that can be connected to a single outdoor unit system depends on the type of
outdoor unit.
∗
PA-16·18·20MA1XPK ··· 20 units
PA-24~30MA1XPK ··· 32 units
(VF059)
The total
of indoor units
displaying "UA" and indoor
units connected to the same
refrigerant system is
20 or 32 units or
less.∗
Replace outdoor unit PC board (A1P).
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
YES
Does a malfunction occur?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.