Mitsubishi Heavy Industries SRC25ZS-W2 - SLEEP TIMER Operation; OFF-TIMER Operation

'20 • SRF-SM-311
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17
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(ii) Heating
1) Operating conditions
When the outdoor air temperature (TH2) is 0ºC (SRF50 : 4ºC) or lower continues for 30 seconds while the compressor
command speed is other than 0 rps
2) Detail of operation
The outdoor fan is stepped up by 2 speed step at each 20 seconds. (Upper limit 8th speed)
3) Reset conditions
When either of the following conditions is satised
a) The outdoor air temperature (TH2) is 2ºC (SRF50 : 6ºC) or higher.
b) The compressor command speed is 0 rps.
3) Reset conditions
When either of the following conditions is satised
a) The outdoor air temperature (TH2) is 25ºC or higher.
b) The compressor command speed is 0 rps.
(r ) Refrigeration cycle system protection
(i) Starting conditions
1) When 5 [model SRF50 : 8 (heating only)] minutes have elapsed after the compressor ON or the completion of the de-
frost control
2)Other than the defrost control.
3) When, after meeting the conditions of 1) and 2) above, the compressor speed, room temperature (Th1) and indoor heat
exchanger temperature (Th2) have satised the conditions in the following table for 5 minutes:
Compressor speed (N)Operation mode
Cooling
SRF25, 35
SRF50
Heating
(2)
Room temperature (Th1)
Th1−4<Th2
Room temperature (Th1)/
Indoor heat exchanger temperature (Th2)
10 Th1 40
<
=
<
=
Th2<Th1+6
0 Th1 40
<
=
<
=
50(40) N
<
=
50 N
<
=
40 N (TH2 0°C)
<
=
>
=
60 N (TH2 0°C)
<
=
<
Notes (1) Value in ( ) are for the model SRF50.
(2) Except that the fan speed is Hi in heating operation.
(ii) Contents of control
1) When the conditions of (i) above are satised, the compressor stops.
2) Error stop occurs when the compressor has stopped 3 times within 60 minutes.
(iii) Reset condition
When the compressor has been turned OFF