Mitsubishi Heavy Industries FDT100VNAWVH Service Manual page 38

(ii) 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.
(iii) 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.
(iv) 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.
Cooling
Setting
temperature
Heating
(b) SRK-ZR series
(i) 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.
Indoor air temperature (˚C)
(ii)  T he 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.
1) If the setting temperature is changed with the remote control, the operation mode is judged immediately.
2) When both the indoor and the outdoor air temperatures are in the range "A", cooling or heating is switched
depending on the difference between the setting temperature and the indoor air temperature.
3) When the operation mode has been judged following the change of setting temperature with the remote control,
the hourly judgment of operation mode is cancelled.
(iii)  W hen the unit is started again within one hour after the stop of automatic operation or when the automatic operation
is selected during heating or cooling operation, the unit is operated in the previous operation mode.
Keep operation
mode
Heating
SP － 1
Indoor air temperature－Setting temperature (˚C)
Signals of wireless remote control (Display)
18 19 20 21
18 19 20 21
18 19 20 21
27.5
18.0
Outdoor air temperature (˚C)
37
-
Cooling
SP: Setting temperature
SP ＋ 1
24
22 23 25
24
22 23 25
24
22 23 25
Cooling
A
Heating
18
-
'19 • PAC-SM-309
Unit : ℃
26 27 28 29
26 27 28 29
26 27 28 29
30
30
30