Unit stopped running. T-stat just makes a clicking sound

Check on t-stat that you are on fan auto setting not fan on if you are on fan auto either t-stat failing or fan relay at indoor unit is stuck on .first turn high voltage off to indoor unit go to t-stat and remove wire from
the G terminal should be green in Color.make sure it is not touching any thing turn high volts back on if fan stop need t-stat if fan still runs need fan relay hope this helps

Check the 24 volt wiring from the T-stat to the outdoor unit. Make sure the T-stat is actually calling for cool.

Sounds like the fan relay is getting voltage bleedover from the 24 volt wire. Could be the thermostat also but most likely there is a bare spot on the wire going from the fan relay to the terminal marked "G" on your thermostat that is touching the wire that goes to the terminal "R". Easiest way to fix this is to run new T-Stat wire from thermostat to the indoor unit or the blower motor if it is a package unit, making sure that the "R" and "G" wires have good insulation on them and are not touching. If you have an 8-wire T-stat wire you can sub out the wires marked "R" and "G" with different color wires that are not being used, just pay attention to how they hook up and you will not have to pull a new wire through the wall. Good luck!

make sure the filter is clean. make sure the evap is clean. sounds that you may have a defective t-stat or unit is under charged if filter and evap are clean. or you can run a freeze stat or a higher fan speed hope this helps you

Hi, sounds to me like the thermostat is at fault.You have done nothing wrong to it but cover it up. The t-stat is what controls it, turns it on and off. The only other thing that would keep it on all the time would be that the thermostat wiring could be touching together from the stat up to the unit. You might check that before replacing stat. I have seen this many times.You can start the unit and go up top and disconnect the stat wire and it should stop the unit.Then its either the wire or stat.Let me know what you find,
Sincerely,Shastalaker7

Heat-Pumps can be temper mental. Sounds to me like your air handler is running on emergency heat, due to a problem with the condensing unit.You have heat strips in the air handler in case the outdoor temp. gets to cold and the heat pump cant keep you're home warm.Also, if you loose a compressor, it will go into emergency heat. If you have lost the compressor for one reason or another, lets say a locked rotor, the compressor would draw L.R.A. (Locked rotor amps) and cause the circuit breaker to trip. Check this.As for the air handler running all the time, you said you replaced the stat? When you removed the control wiring from the stat, did the fan shut off? I wish I were on site to help you, but all I can do is offer you some advice. With the power off to the air handler, go to the stat and remove the red and green wires. Turn power back on and see if it stops running. If it stops, then it sounds like the new stat is also faulty? If it continues to run, check the wiring in the air handler to make sure the red and green are not touching somewhere, and also check the control wiring on the outdoor unit for the same problem. Do you have any dogs that may have chewed into wiring? If so, check all outdoor t-stat wiring. There are so many things it could be and I hope very much I have helped you with solving this online, which can be difficult. You may also have a faulty defrost board. Try to do what I have asked of you.
Good Luck, Sincerely, shastalaker7

Sounds like the 2 wires from the t-stat are touching somewhere. when you unplug it the low voltage is broken. Check the wires very closely to make sure they aren't touching. Even check in the t-statOne wire goes to red and one to white.

i can help with this. call 1-888-855-9987. The problem is on the board.

Sounds like a bad start run capacitor. The exhaust fan motor may be bad too. Be careful, this unit delivers 220volts of electricity.

check the fan timer if equipped. check stat wireing and make sure it is on auto. remove wire on g from stat and motor should stop.check for power to motor and remove on control or wire at a time unit it stops running