Solenoid Valve Control In Cooling Operation - Daikin Skyair FHC35K Service Manual

Si-71A
5.2.14

Solenoid Valve Control in Cooling Operation

When the discharge pipe temperature (T2) is high, liquid is released from the modulator to reduce the
discharge pipe temperature.
ON condition T2 ≥ 120°C
In the Case of
OFF condition T2 ≤ 95°C
R(Y)140K
∗ The motorized valve is fully open while the solenoid valve is ON.
„ When the solenoid valve turns OFF at T2 ≤ 95°C, the motorized valve remains fully open for 2 minutes.
5.2.15 Low Outside Temperature Control in Cooling Operation (Year-round Cooling)
The air flow volume of an outdoor unit fan is reduced to prevent freezing of the indoor unit heat exchangers
due to a drop in the low pressure (LP) and indoor unit heat exchanger temperature (Te).
After starting control ends, if the outdoor air temperature falls below (33.5 - 0.5 × room suction
temperature), the indoor unit fan speed is switched to "L." The differential is 3°C.
Fan Control
Explanation of Function Operation
Function Details
69