Condensing Temperature Control (Cooling) - Technibel GRV250R5TAA Technical Data & Service Manual

2-6 Condensing Temperature Control (Cooling)

Condensing temperature is controlled by the outdoor heat exchanger coil temperature as
sensed by sensor C2.
C2
FMO
ELECTRONIC
CONTROL VALVE
1
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.
1 2
When C2 falls below 40°C, the outdoor fan speed decreases by one step.
3
4
5
(°C)
60
57
40
H or L
H, L or LL
+50 step
/30 sec
Chart Explanations and notes
2. Processes and functions
H
L
+50 step
/30 sec
II - 8
LL
1906_M_I
Fig. 9