Mitsubishi Heavy Industries SRRM25ZF-S, Technical Manual, Page: 63 / 127

-
61
-
< II >
(a) Operating conditions:
When the outdoor air temperature sensor (Th
O
-A) is 22
°
C or lower continues for 30 seconds while
decision speed is other than 0 rps.
(b) Detail of operation:
1 The lower limit of decision speed is set to B (or D) rps and even if the speed becomes lower than B (or D) rps, the
speed is kept to B (or D) rps. However, when the thermo becomes OFF, the speed is reduced to 0 rps.
2
The upper limit of decision speed is set to A (or C) rps, the speed is kept to A (or C) rps.
(c) Reset conditions: When the either of the following condition is satisfied
1
When the outdoor air temperature sensor (Th
O
-A) becomes 24
°
C or higher.
2
When the decision speed is 0rps.
(9) Cooling low load protection control (SCM45ZF-S, SCM60ZF-S only)
(a) Operating condition: During cooling operation , when the outdoor air temperature (Th
O
-A) is 22
°
C or lower for 3 minutes
continuously.
(b) Detail of operation: Taking the lower limit of decision speed range at 22 rps (60 type: 20 rps).
(c) Reset condition: When the outdoor air temperature (Th
O
-A) is 24
°
C or higher.
(l0) Cooling low outdoor temperature protective control (SCM40ZF-S, SCM48ZF-S, SCM80ZF-S only)
<
I
>
(a) Operating conditions: When the outdoor air temperature sensor (Th
O
-A) is 22
°
C or lower continues for 30 seconds while
decision speed is other than 0 rps.
(b) Detail of operation: The outdoor fan is controlled in accordance with the outdoor heat exchanger temperature.
(c) Reset conditions: When the either of the following conditions is satisfied
1
When the outdoor air temperature sensor (Th
O
-A) becomes 24
°
C or higher.
2
When the decision speed is 0 rps.
Note (1) Values in ( ) are SCM80.
°
A
B
C
D
80 rps
35 rps
64 rps
60 rps
SCM40ZF-S
96 rps
29 rps
64 rps
54 rps
SCM48ZF-S
60 rps
20 rps
50 rps
30 rps
SCM80ZF-S
• Values of A ~ D