'20 • SR-SM-285
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45
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(b) Heating
1) Operating conditions
When the outdoor air temperature (TH3) is 0ºC or lower continues for 30 seconds while the compressor com-
mand 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 satisfied
a) The outdoor air temperature (TH3) is 2ºC or higher.
b) The compressor command speed is 0 rps.
(16) Refrigeration cycle system protection
(a) Starting conditions
1)
2)
When 5 minutes have elapsed after the compressor ON or the completion of the defrost control
Other than the defrost control
(b) Contents of control
1)
(c) Reset condition
When the compressor has been turned OFF
2)
When the conditions of (i) above are satified, the compressor stops.
Error stop occurs when the compressor has stopped 3 times within 60 minutes.
3) When, after satisfying the conditions of 1) and 2) above, the compressor speed, room temperature (Thi-A) and
indoor heat exchanger temperature (Thi-R) have satisfied the conditions in the following table for 5 minutes:
Note (1) Except that the fan speed is Hi in heating operation.
Compressor speed (N)
Operation mode
Cooling
Heating
(1)
Indoor temperature (Thi-A)
Thi-A−4<Thi-R
Indoor temperature (Thi-A)/
Indoor heat exchanger temperature (Thi-R)
Thi-R<Thi-A+4
50 N
<
=
10
Thi-A 40
<
=
<
=
0
Thi-A 40
<
=
<
=
50 N
<
=
Summary of Contents for SRR25ZS-W
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