It is an older Carrier with a mercury thermostat, the fan doesn't send heat most of the time, the heat and fan rarely go on auto.. AC is normal. It may turn on auto if it is warm, but it is way below freezing now. Thanks.
SOURCE: Need a quick fix for a Carrier that won't heat. Ac works, fan works, auto for heat doesn't.
Filter has nothing to do with anything.
What you can do is take wire out from thermostat and put W and R together and if heat comes on then thermostat is bad .
Testimonial: "Thanks, appreciate your reply! Thermostat seems to be stuck around 70 degrees but that is not actual temperature, what does that mean? Is there a way to get it working temporarily? Below freezing, need heat! Thanks."
135 views
Usually answered in minutes!
Hi Anonymous, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
Hi Andy, thanks for your help, what type of details do you need? Not sure of model numbers, etc. it was already here.
what size heater? how many amps is it pulling?
It is housed behind an upper wall vent, cannot get to that information, it was already here (not recently installed). It is a small central air type.
×