Hi,

I have a Carrier Heating Furnace. Lately it hasn't functioning properly. For example, when its in "off" mode, and after I increased the temperature (from 17 C to 25 C), the furnace having trouble to operate, it still in off mode - I waited for 5 minutes and its still in "off" mode. I had to manually switch OFF and ON on the switch-circuit in order to turn the furnace "ON". Anyone have any idea why and how will it be fixed?

Thanks in Advance