Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 203

b
c
3) Reset conditions:
a
b
(b)
Heating
(i) Operating conditions:
(ii) Detail of operation:
(iii) Reset conditions:
(20) Outdoor unit fan control at overload
(a) Cooling
(i) Starting condition: When the outdoor air temperature (Tho-A) has risen higher than 41°C for 30 seconds continu-
(ii) Contents of control: The outdoor unit 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
(b) Heating
(i) Start condition: When the outdoor heat exchanger temperature (Tho-R) has risen higher than 13°C for 30 seconds
(ii) Contents of control: The outdoor unit fan is stepped down by 3 speed. (Lower limit is 2nd speed)
(iii) Reset condition: When the compressor is turned off or the outdoor heat exchanger temperature (Tho-R) has dropped
Lower
Outdoor air temperature > 16˚C
Outdoor air temperature < = 16˚C
-
temperature
Tho-A
Tho-A
ously while the compressor is operating.
Normal operation
OFF
Outdoor air temperature(ºC)
Normal operation
OFF
40°C.
Outdoor air temperature(ºC)
Normal operation
OFF
continuously while the compressor is operating.
Outdoor heat exchanger temperature(ºC)
Normal operation
OFF
Outdoor heat exchanger temperature(ºC)
lower than 10°C.
Lower limit speed
Tho-R
Tho-R
Tho-A
Under control
ON
40 41
Under control
ON
40 41
Under control
ON
10 13
Under control
ON
10 13
202
- -
'17 • SCM-T-225
3rd