Freeze Prevention Control - Daikin 3MKS50E3V1B Service Manual

SiBE121135
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.
Function and Control
+ 7˚C
+ 0˚C
– 5˚C
10 min.
Indoor Unit Control (SA Models)
10 min.

Freeze prevention control

Forced OFF by thermostat
Normal operation
(R12940)
103