2. Processes and functions
1
12
3
4
5
II - 8
SM830080
2-6 Condensing Temperature Control (Cooling)
Condensing temperature is controlled by the outdoor heat exchanger coil temperature as
sensed by sensor C2.
Chart Explanations and notes
❑ This chart shows how the outdoor fan speed and the electronic refrigerant control valve
react to coil temperature to control condensing temperature.
❑ Sensor C2 is located in the middle of the outdoor unit heat exchange coil.
❑ When C2 rises above 60°C the electronic control valve opens 50steps / 30 seconds, and
the outdoor for speed increases by one step. The outdoor fan speed doese not change for 5
minits.
❑ When C2 falls below 40°C, the outdoor fan speed decreases by one step.
60
40
57
(°C)
C2
FMO
ELECTRONIC
CONTROL VALVE
1906_M_I
H, L or LL
+50 step
/30 sec
+50 step
/30 sec
H or L
H
L
LL
Fig. 9
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