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'12 • PAC-T-173
(c) In case of anomaly
a) If any anomaly occurs on a unit in a group (a protective function operates), that unit stops with the anomalous
stop but any other normal units continue to run as they are.
b) Signal wiring procedure
Signal wiring between indoor and outdoor units should be made on each unit same as the normal wiring. For
the group control, lay connect with sires wiring between rooms using terminal blocks (X, Y) of interface kit.
Connect the remote controller communication wire separately from the power supply wire or wires of other
electric devices (AC220V or higher).
(11) Filter sign
As the operation time (Total ON time of ON/OFF switch) accumulates to 180 hours (1), “Filter cleaning” is displayed on the
remote controller. (This is displayed when the unit is in trouble and under the centralized control, regardless of ON/OFF)
Note(1)Timesettingfortheltersigncanbemadeasshownbelowusingtheindoorfunctionofwiredremotecontroller“FILTERSIGNSET”.(Itissetat1atthe
shipping from factory.)
Filter sign setting Function
Setting 1 Setting time: 180 hrs (Factory default)
Setting 2 Setting time: 600 hrs
Setting 3 Setting time: 1,000 hrs
Setting 4 Setting time: 1,000 hrs (Unit stop)
(2)
(2) After the setting time has elapsed, the “FILTER CLEANING” is displayed and, after operating for 24 hours further (counted also during the stop), the unit
stops.
(12) Outline of automatic operation
(a)
Determination of operation mode
The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then
begins in the automatic operation.
(b)
The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previous
operation mode, changes the operation mode.
(c)
When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is
selected during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.
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