Freeze Prevention Control - Daikin Super Multi NX FFQ25B8V1B Service Manual

Function of Indoor Unit (SA Models)
2.3

Freeze Prevention Control

When the temperature detected by liquid pipe thermistor (R2T) of the indoor heat exchanger
drops too low, the unit enters freeze prevention control in accordance with the following
conditions, and is also set in accordance with the conditions given below.
Conditions for starting: 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 cancelling: 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
+ 7˚C
+ 0˚C
– 5˚C
10 min.
10 min.

Freeze prevention control

Forced OFF by thermostat
SiBE121021_C
Normal operation
(R12940)
Function and Control