Why is the heating output not high, even if the lower limit has been reached? The FBox status shows "Frost protection".

FAQ #100959

 

Problem
Even if the temperature is lower than the limit temperature, the heating output is not set. The FBox shows the status "frost protection".

Reason
The window contact is per default configured as: Normal state window contact=closed. In this case the PCD7.L60x checks the window contact. If nothing is connected to this conntact it won't start heating until it reachs the frost protection point.

Solution
If the contact is not used for a real window contact you must either have a bridge between the contact 7 and 8 to simulate the window contact as closed or you have to define the window contact in the "Config" F-Box as: Normal state window contact=open.