Mitsubishi Heavy Industries SRK63ZR-WF Technical Manual page 53

c)
3) Reset conditions
a)
b)
(ii)
Heating
1) Operating conditions
2) Detail of operation
3) Reset conditions
a)
b)
(s) Refrigeration cycle system protection
(r) Outdoor fan control at overload conditions.
(i) Starting conditions
(i) Cooling
1)
When A minutes have elapsed after the compressor ON or the completion of the defrost operation
1) Operating conditions
2)
Other than the defrost operation
When the outdoor air temperature (TH2) is 41℃(model 63:38℃) or higher continues for 30 seconds
3)
When, after satisfying the conditions of 1) and 2) above, the compressor speed, indoor air temperature (Th1) and
while the compressor ON
indoor heat exchanger temperature (Th2) have satisfied the conditions in the following table for B minutes:
2) Detail of operation
Operation mode
The outdoor fan is stepped up by 3 speed step. (Upper limit 8th speed).
3) Reset conditions
Model 63
Cooling
When either of the fllowing conditions is satisfied
Model 71, 80
a) The outdoor air temperature (TH2) is 40℃(model 63:37℃) or lower.
Model 63
(1)
Heating
b) The compressor command speed 0 rps.
Model 71, 80
(ii) Heating
Note (1) Except that the fan speed is Hi in heating operation and silent mode control.
1) Operating conditions
(ii) Contents of control
When the outdoor heat exchaner temperature (TH1) is 13℃ or higher continues for 30 seconds while
1)
When the conditions of (i) above are satisfied, the compressor stops.
the compressor ON
2)
Error stop occurs when the compressor has stopped C times within 60 minutes.
2) Detail of operation
(iii) Reset condition
The outdoor fan is lowered by 3 speed step. (Lower limit 2nd speed).
When the compressor has been turned OFF
3) Reset conditions
(t) Service valve (gas side) closing operation
When either of the fllowing conditions is satisfied
(i) Starting conditions
a) The outdoor heat exchaner temperature (TH1) is 10℃ or lower.
1) Operation mode : Heating
b) The compressor command speed 0 rps.
2) Compressor conditions : OFF
(ii) Contents control
If the output current of inverter exceeds the specifications, it makes the compressor stopping.
(iii) Anomalous stop control
If the inverter output current value excceds the setting value within 80 seconds, the compressor stops.
- 40
40
2
Compressor speed (N)
A
40 N (TH2
3
40 N (TH2
3
40 N
40 N (TH2
8
60 N (TH2
5 40 N
ON
-
40
24
(model 63 : 1 ）
3
at each 20 seconds
(model 63 : 3 ）
5
Room temperature (Th1)/
Room temperature (Th1)
Indoor heat exchanger temperature (Th2)
10 Th1 40
0 Th1 40
52
-
'22 • SRK-T-362
8th (model71 : 7th)
B
3
Th1−4<Th2
Th2<Th1+6
5
C
1
4
1
2