Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 106

(d) Fan control during cooling thermostat OFF
(i) Following fan controls during the cooling thermostat OFF can be selected with the indoor function setting of the
wired remote control.
① Low fanspeed, ② Set fan speed (Factory default), ③ Intermittence, ④ Fan OFF
(ii) When the "Low fan speed" is selected, the following taps are used for the indoor fans.
・ ForDCmotor:ULotap
(iii) When the "Set fan speed" is selected, it is operated with the set fan speed also in the thermostat OFF condition.
(iv) If the "Intermittence" is selected, following controls are performed:
1) If the thermostat is turned OFF during the cooling operation, the indoor unit fan motor stope.
2) Indoor fan OFF is fixed for 5 minutes. After the 5 minutes, the indoor fan is operated at ULo for 2 minutes. In the
meantime the louver is controlled at level.
3) After operating at ULo for 2 minutes, the indoor fan moves to the state of 1) above.
4) If the thermostat is turned ON, the fan starts operation at set fan speed.
5) When the cooling thermostat is turned OFF, the remote control displays the temperature detected at the fan stop
and revises the temperature later when the indoor fan changes from ULo to stop.
By using operation data display function at wireless remote control, the tempenature as displayad and the value is
updated including the fan stops.
6) When the cooling thermostat is turned ON or the operation is changed to another mode (including stop), this
control is stopped immediately, and the operating condition is restored.
(v) When the "Fan OFF" is selected, the fan on the indoor unit of which the thermostat has been turned OFF, is turned OFF.
The same occurs also when the remote control sensor is effective.
(9) Filter sign
As the operation time (Total ON time of ON/OFF switch) accumulates to 180 hours
is displayed on the remote control. (This is displayed when the unit is in trouble and under the centralized control,
regardless of ON/OFF)
Notes (1) Time setting for the filter sign can be made as shown below using the indoor function of wired remote control "Filter sign". (It is set at setting 1
at the shipping from factory.)
Filter sign setting
Setting 1
Setting 2
Setting 3
Setting 4
(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.
(10) Compressor inching prevention control
(a) 3-minute timer
When the compressor has been stopped by the thermostat, remote control operation switch or anomalous condition, its
restart will be inhibited for 3 minutes. However, the 3-minute timer is invalidated at the power on the electric power
source for the unit.
(b) 3-minute forced operation timer
(i) Compressor will not stop for 3 minutes after the compressor ON. However, it stops immediately when the unit is
stopped by means of the ON/OFF switch or by when the thermister turned OFF the change of operation mode.
(ii) If the thermostat is turned OFF during the forced operation control of heating compressor, the louver position (with
the auto swing) is returned to the level position.
Note (1) The compressor stops when it has entered the protective control.
Function
Setting time: 180 hrs (Factory default)
Setting time: 600 hrs
Setting time: 1,000 hrs
Setting time: 1,000 hrs (Unit stop)
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'19 • PAC-T-327
, "FILTER CLEANING"
(1)
(2)