Blower constantly running. will not shut off even if thermostat setting has been lowered
A lot of units have a switch by the blower unit. It switches left or right. One way is automatic running from your thermostat and the other stay running...You can alway turn the blower off from your main breaker box..But that want fix the problem...If I had to guess..You have a small wire loose or disconnected in your thermostat...Take the cover off and look for small wires.. Sometimes these wires get broke moving the settings up and down...Find the lose wire and reconnect...You can replace the thermostat but you will still have to connect the wires to the new one...I have seen people with weed eaters cut a outside wire by the units that caused the blowers and units stay on...Hoor this helps
When you say door are you referring to the front door or the furnace door? If the unit kicks on AND off by itself I would say it's in the tstat or the tstat wire. If it were internal I would think the blower relay or heat contactor/relay were getting stuck AND THE FAN WOULD NOT TURN OFF until you flipped the breaker. Good luck
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