– 34 –
SM830035
2
2. Processes and functions
Fig. 9
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 refrigerant control valve opens at 50 steps/30
seconds, and the outdoor fan speed is forced to change to high (H) until C2 falls below
55°C.
60
55
OUTDOOR UNIT
COIL TEMP. C2
(°C)
OUTDOOR FAN
SPEED
ELECTRONIC REF.
CONTROL VALVE
H, M H, M
FORCED
H
0436_M_S
OPEN
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