Honeywell EN2H-0221GE51 R0808 ユーザーズマニュアル

Control Functions 

SDC / DHC  

124 EN2H-0221GE51 

R0808 

Cancelling switch-off 

The switch-off is cancelled when the current outside temperature 
drops below the set value by more than 1 K 

The summer switch-off function is cancelled: 

•  in case of an outside sensor defect 

•  in case frost protection is active 

 

The HEATING LIMIT parameter can be used to assist the 
summer switch-off function. This function allows setting non-
heating periods on warm days for each individual heating circuit. 

In connection with a second outside sensor, the current averaged 
outside temperature is accepted for summer deactivation if the 
average value of both sensors is specified during outside sensor 
assignment. 

Active summer deactivation is represented by a beach umbrella 
symbol in the basic display. In case of separate operation of the 
heating circuits ("System Parameters" menu, Control Mode 
parameter) the symbol is not displayed. If two outside sensors are 
connected and they were assigned to different heating circuits, 
the symbol is furthermore only displayed if both sensors fulfil the 
condition for summer de-activation. 

 

5.2.3 "System Parameters" menu, Pg. 72 

 

To avoid the freezing of the heating system in switch-off mode, 
the controller is equipped with electronic frost protection. 

 

Operation without room temperature sensing 

If the outside temperature (current value) drops below the set 
limit, heating is turned on again. Heating is interrupted if the 
outside temperature exceeds the set limit by 1 K.