Indoor fan motor continue to run even if the thermostat is in auto position with the cool and heat switch in the off position. The furnance don't have a fan on and off switch in the furnance like most. The only way to turn the fan motor off is to turn off thr high power switch. I change indoor fan relay but the problem still exist
Heating & Cooling - Intertherm
Answers & Comments
Try this, disconnect the fanwire (green) on the furnace, if it shuts off then the hot wire from the thermostat is touching the green wire or bad thermostat. Thank-you-very-much!