Hi, I found a blown 5amp fuse for the thermostat that was causing my heating system not to work. Put a new 5amp fuse in and 2 min. later I hear clicking noise from the thermostat and then it went out again. I may have a short somewhere. But, where do I start and what do I need to check?

Exact Model number of unit?

Brand of unit?

Exact Model number of thermostat?

Brand of thermostat?

My crystal is broken and I cannot tell what you are working on from here sorry.