My Furnace/Heat Pump seems to be working incorrectly. There are times when the Heat Pump outside will run continuously while the thermostat says "heating" however, the blower doesn't come on inside. The coil coming into my furnace unit gets very hot. I have to turn off the unit completely for...

Carrier 48SB-030080301 1990 model nat gas. On a/c mode works fine. Heat- burner lites but blower will not come on at all unless on manual. I changed the J2 jumper on thermostat from hg to he to see if I could get by for a while and its been working for about a month now. Other than blast of cool...

I am having a intermintant problem with my furnace, I came home the blower was on no heat , I checked the themostat setting - ficked the service switch off and on a couple of times- burner started, I can hear the burner when it comes on, the furnace ran all day without problem I wake in the night...

(Coleman Evcon) Some how the hot and cold on the inside thermostat switched.how is that possible?and how do I fix it?

I am installing a Honeywell, RTH230B. My connections are: R to Rh (red jumper to Rc that came with the unit) W to W Y to Y G to G B to nothing The fan comes on (when set to "on").