Fan won't turn on in HEAT
Hope someone can help...
When my thermostat is set to "AUTO" and "HEAT", and temperature is set to high like 85, I can hear some activity from the furnace but the fan will not blow. When I set it to fan to "ON", the fan does indeed blow, but not warm. The thermostat has been working fine - I also tried to bypass and jump the red and white wires after disconnecting it from the thermostat. Again, the hear does not work. The heating system is natural gas and was working fine prior.
