12-22
CONTROL SYSTEM
SM HAFRPM 2-A.1 GB
12.8.2 Heating
Mode
Protections
1. Outdoor coil Deicing (excluding RH Group)
Mode: Heating, Auto (at heating)
Temp: Selected desired Temp
Fan: Any
Timer: Any
I FEEL: Any
Control function
Protects the Outdoor coil from ice formation by controlling COMP & RV operation.
Scope
This new deicer is designed to operate at extreme temp conditions. The deicing cycle could be
triggered from:
1. OCT temp and time between two consecutive deicing cycles.
2. Detection of ice forming by change of the OCT temp.
Both algorithms adjust the time between deicing cycles to optimize the A/C performance. The
algorithm will automatically increase the time between deicing cycles and reduce the deicing
cycle as needed.