Mitsubishi Heavy Industries SCM50ZS-S1 - Outdoor Fan Control at Overload

(20) Outdoor fan control at overload
(i) Starting condition
When the outdoor air temperature (Tho-A) has risen higher than 41°C for 30 seconds continuously while the com-
pressor is operating.
(ii) Contents of control
The outdoor fan is stepped up by 3 speed. (Upper limit 6th speed)
(iii) Reset condition
When the compressor is turned off or the outdoor air temperature (Tho-A) has dropped lower than 40°C.
(i) Starting condition
When the outdoor heat exchanger temperature (Tho-R) has risen higher than 13°C for 30 seconds continuously
while the compressor is operating.
(ii) Contents of control
The outdoor unit fan is stepped down by
B
speed. (Lower limit is
C
speed)
(iii) Reset condition
When the compressor is turned off or the outdoor heat exchanger temperature (Tho-R) has dropped lower than
A
.
40 41
ON
Under control
OFF
Normal operation
A 13
ON
Under control
OFF
Normal operation
Outdoor air temperature(ºC)
Outdoor heat exchanger temperature(ºC)
40 41
ON
Under control
OFF
Normal operation
A 13
ON
Under control
OFF
Normal operation
Outdoor air temperature(ºC)
Outdoor heat exchanger temperature(ºC)
(a) Cooling
(b) Heating
Model
SCM50
SCM60
10
8
A
3
4
B
2nd
1st
10 3 2nd
C
Indoor unit : 1 unit
Indoor unit : 2 units
or more
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193
-
'18 • SCM-T-251