Freeze Prevention - Daikin VRV II RXYQ5MY1B Service Manual

Outline of Control (Indoor Unit)
6.4

Freeze Prevention

Freeze
When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit
Prevention by Off heat exchanger drops too low, the unit enters freeze prevention operation in accordance with
the following conditions, and is also set in accordance with the conditions given below.
Cycle (Indoor
Unit)
Conditions for starting freeze prevention: Temperature is -1°C or less for total of 40 min., or
temperature is -5°C or less for total of 10 min.
Conditions for stopping freeze prevention: Temperature is +7°C or more for 10 min.
continuously
Ex: Case where temperature is -5°C or less for total of 10 min.
108
Freeze prevention operation
Forced OFF by thermostat
10min.
SiE39-404
10min.
Function