Filter Sign; Outline Of Automatic Operation - Mitsubishi Heavy Industries SRK100VNXPZSX Technical Manual

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(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 control communication wire separately from the power supply wire or wires of other
electric devices (AC220V or higher).

(10) 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 control. (This is displayed when the unit is in trouble and under the centralized control, regardless of ON/OFF)
Note (1) Time setting for the filter sign can be made as shown below using the indoor function of wired remote control "FILTER SIGN SET". (It is set at 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.

(11) Outline of automatic operation

(a) Determination of operation mode
Operation mode is determined by indoor air temperature and outdoor air temperature as following.
(b) Operation mode is changes when keep cooling and heating thermostat off 20 minutes and be satisfied following conditions.
If the setting temperature is changed with the remote control, the operation mode is judged immediately.
※It can not be changed to heating mode if outdoor air temperature is 28℃ or higher.
(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.
(d) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals
of the wireless remote control and the setting temperature.
Setting
temperature
Function
Setting time: 180 hrs (Factory default)
Setting time: 600 hrs
Setting time: 1,000 hrs
Setting time: 1,000 hrs (Unit stop)
SP
Indoor air
Heating
temperature (˚C)
Outdoor air temperature (˚C)
Keep operation
mode
Heating
SP - 1
Indoor air temperature-Setting temperature (˚C)
18
19
20
Cooling
18
19
20
Heating
18
19
20
(2)
Cooling
SP: Setting temperature
28
Cooling
SP: Setting temperature
SP + 1
Signals of wireless remote control (Display)
24
21
22
23
24
21
22
23
24
21
22
23
70
-
-
'17 • PAC-T-257
25
26
27
28
25
26
27
28
25
26
27
28
Unit : ℃
29
30
29
30
29
30

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