Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 21

(4) Comfort timer setting
If the timer is set at ON when the operation select switch is set at the cooling or heating, or the cooling or heating in auto mode
operation is selected, the comfort timer starts and determines the starting time of next operation based on the initial value of 15
minutes and the relationship between the room temperature at the setting time (temperature of room temperature sensor) and the
setting temperature. (Max. 60 minutes)
Operation mode
3 < Room temp. – Setting temp.
At cooling
3 < Setting temp. – Room temp.
At heating
Notes (1) At 5 minutes before the timer ON time, operation starts regardless of the temperature of the room temperature sensor (Th1).
(2) This function does not actuate when the operation select switch is set at the dehumidifying as well as the dehumidifying in the auto mode.
However, the operation of item (1) above is performed during the dehumidifying in the auto mode.
(3) During the pleasant reservation operation, both the operation lamp and timer lamp illuminate and the timer lamp goes off after expiration of the timer, ON setting
time.
(Example) Heating
Setting temperature
Room temperature
(5) Outline of heating operation
(a) Air flow selection
(i) Frequency of inverter changes within the range of selected air flow.
Air flow selection
Auto Frequency
Air flow
HI Frequency
Air flow
MED Frequency
Air flow
LO Frequency
Air flow
(ii) When the defrosting, protection device, etc. is actuated, operation is performed in the corresponding mode.
(iii) Outdoor unit blower operates in accordance with the frequency.
(b) Details of control at each operation mode (pattern)
(i) Fuzzy operation
Deviation between the room temperature setting correction temperature and the suction air temperature is calculated in
accordance with the fuzzy rule, and used for control of the air capacity and the inverter frequency.
(ii) Heating thermostat operation
¡ Operating conditions
If the frequency obtained with the fuzzy calculation drops below -24 Hz (rps) during the heating fuzzy operation,
the operation changes to the heating thermostat operation.
¡ Detail of operation
Inverter frequency
Indoor fan
Outdoor fan
Flap
Operation start time correction value (Min.)
1 < Room temp. – Setting temp.
+5
2 < Setting temp. – Room temp.
+5
Operation starting time
Time 15 min. 10 min. 5 min.
earlier earlier earlier
Model
SRK25GZ-L1
34~110Hz
Depends on frequency.
34~110Hz
5/6th speed
34~80Hz
5th speed fixed
34~50Hz
3rd/4th speed
0Hz (rps) [Comp. stopped]
Hot keep normal mode → 1st speed
Stop
Horizontal
3 Room temp. – Setting temp.
No change
3 Setting temp. – Room temp.
No change
Corrects the starting time of next operation by
calculating the temperature difference.
¡ If the difference (= Setting temperature – Room tempera-
ture) is 4ºC, the correction value is found to be +5 min-
utes from the table shown above so that the starting time
of next operation is determined as follows:
15 min. earlier + 5 min. = 20 min. earlier
↑
Current operation
start time
Setting time
SRK35GZ-L1
34~110Hz
Depends on frequency.
34~110Hz
5~7th speed
34~94Hz
5th speed fixed
34~58Hz
3rd speed fixed
SRK-GZ
1
–5
2
–5
↑
Correction value
SRK502Z-L
14~150rps
Depends on frequency.
14~150rps
6~8th speed
14~110rps
4~7th speed
14~50rps
2~5th speed
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