Thermostat reads -AC

Maren's Avatar (by Gravatar) by Maren in  Climate Control » Heating 

Our air conditioning has been out for a couple years but the heater still worked... Tonight we tried turning it on and the thermostat reads-AC and the the heater shuts off.

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Answer by homeowners

This is probably a silly question but did you simply check which mode it's on - heating or cooling?

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