Freeze-Up Protection Control - Daikin ARXG35E3V1B Service Manual

Control Specification
3.6

Freeze-up Protection Control

Outline During cooling operation, the signals being sent from the indoor unit allow the operating
frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from
the indoor unit must be divided into the zones as the followings.
Detail Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from
operation start.
Control in Each Zone
36
(Reference)
13˚C
Reset zone
7˚C
Up zone
5˚C
Keep zone
3˚C
Drooping zone
0˚C
Stop zone
Heat exchanger
thermistor temperature
SiBE04-809
Return from stop
(R4561)
Function and Control