My central air stopped working. It makes a humming noise like it will go on then it doesnt keep going. Could I need a new thermostate? It was working great before that. It just happend all of the sudden. Also could weak batteries cause the thermostate not to work?
It sounds like you have a bad capacitor to the compressor. The humming noise is the compressor not starting up but is trying. It is either the capacitor or the compressor form your description. If you had a lightning storm or power surge about the time this happened it is most likely a bad capacitor. You can have the capacitor tested to see. Disconnect power before working on unit!
Having problem securing the red wire in terminal. also installed new thermostat and ac won't come on??
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Great question regarding weak batteries possibly causing the thermostat to not work. I'm sorry to hear that your air conditioning unit isn't working properly. I've noticed something similar happening at my house. It might be time for me to call a professional who can specialize in this sort of thing. The heat is making it pretty difficult to sleep at night. https://vicsheatingandcooling.com/
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