Installation Instructions

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62
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'13 • SRK-T-144
(ii) Heating
1) Operating conditions:
When the outdoor air temperature (TH2) is 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 6ºC or higher.
b)
The compressor command speed is 0 rps.
(r) Refrigeration cycle system protection
(i) Starting conditions
1) When
5 [model SRK50, 60 : 8 (heating only)] minutes have elapsed after the compressor ON or the completion
of the defrost control.
2) Other than the defrost control.
3) When,
after meeting the conditions of 1) and 2) above, the compressor speed, indoor temperature (Th1) and in-
door heat exchanger temperature (Th2) have met the conditions in the following table for 5 minutes:
Compressor speed (N)Operation mode
Cooling
SRK20~35
SRK50, 60
Heating
(2)
Indoor temperature (Th1)
Th1−4<Th2
Indoor 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 SRK50, 60.
(2) Except that the fan speed is HI in heating operation.
(ii) Contents of control
1) When the conditions of (i) above are met, the compressor stops.
2) Error stop occurs when the compressor has stopped 3 times within 6
0 minutes.
(iii) Resetting condition
When the compressor has been turned OFF.