Natural gas furnace with forced air. The furnace controls the fan.
Every time I turn the heat on I hear a click from the unit, but the thermostat will turn off - power cycle, and will just go into loop trying to turn the heat on and then reset. Getting it to stop is a hassle.
Deleted and re-setup the thermostat but didn’t help. Cooling work ok and so is fan. Old thermostat had jumper between RC-RH.
Any ideas? thank you