Freeze Prevention - Daikin VRV - WII Service Manual

Outline of Control (Indoor Unit)

9.10 Freeze Prevention

Freeze When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat
exchanger drops too low, the unit enters freeze prevention operation in accordance with the
Prevention by Off
following conditions, and is also set in accordance with the conditions given below.
Cycle (Indoor
Unit)
Conditions for starting freeze prevention: Temperature is 30°F or less for total of 40 min., or
temperature is 23°F or less for total of 10 min.
Conditions for stopping freeze prevention: Temperature is 45°F or more for 10 min. continuously
Ex: Case where temperature is 23°F or less for total of 10 min.
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SiUS30-604
Function