Freeze Prevention Control - Daikin MKS-T Series Service Manual

MSP Duct Type Functions
2.3

Freeze Prevention Control

Outline
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.
Details
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.
67
+ 7°C
+ 0°C
– 5°C
10 min.
10 min.

Freeze prevention control

Forced OFF by thermostat
SiSG121917E
Normal operation
(R12940)
Part 4 Functions and Control