I have a Coleman Heat Pump, The unit all of a sudden just keeps running, and wont shut off. The only way to shut it off is to turn the breaker off..Will this hurt the unit by running all the time...I need help to figure out whats wrong with it..

thermostat bad.

Coleman Evcon Furnace Error Codes


this will help you

You may have a bad thermostat, keeping the unit on,or the compressor contactor in the condensing unit outside seized shut. When contactors get older they can kind of melt the contacts together.This would also cause it to run in heat mode.

Hi what has happened is, this is a heat pump. The main breaker keeps tripping because the compressor is shorted. I hate to give you this news, but anytime a unit keeps tripping the main breaker on a heat pump, the compressor is either locked up and drawing enough amps to trip the breaker, or it is shorted internally. This is something that you will have to call a tech out on. I am sorry to give you this news, but this is all it could be. If it came on for a minute blowing cold air, the compressor wasn't running due to it being shorted out. This is your only choice is to call someone out to check it. If this is a older unit, you may be better off replacing the outdoor unit. If not, get an estimate on a compressor change out. I wish you all the best on this, and I know this is bad news, but these things always happen at the wrong time of year. Please keep me posted.
Sincerely,
Shastalaker7
A/C, & Heating Contractor.

There should be an overload protection device in series with the low voltage wiring(t-stat wiring) Is it resting on the heat strip or too close to it? It is a saftey device to shut off the heat strips if the fan quits or a fire in the heat strip section. check that or by pass it, if it stays running then ur thermal protector is bad, couple bucks at the parts house.

Hi, something is for sure still energized after it is satisfied. I would think it would be on the control voltage side, like a contactor coil or relay. What I would recommend if you are able, is to go up top to the condenser and remove the cover. With the unit satisfied at the stat, listen to see if you can find the componant that is still getting power to it and you will know. If it is nothing above, my guess it would be in the controls on the indoor unit. More then likely, I would say you will find your problem part up top. Please keep me posted on this. Let me know what you find. Something is still getting power to it. With the unit satisfied, am I right to say the hum is not coming from the breaker its self? Just asking.
Sincerely,
Shastalaker7

well you have it great job! on the out door unit when it will not shut off disconnect the yellow wire on the stat wires coming from inside if unit stops stat bad if not contactor "points' if they look pitted or buzz change them #1 reason for compressor failure high amp draw thru bad contactor hope this helps aboout 15.00 at hvac store seperate wires with zip ties so dont get mixed up if only one set of points then 30amp single pole 24vac coil contactor

In some cases the fan will keep running to remove all the heat from the heat exchanger.It can be set to run shorter or longer.You might check that out.

the laws of physics dictate that what you are saying is impossible.a unit can not run without power so you have done one of three things. the breaker you are turning off has no relationship to the ac. or the breaker is for the indoor , not the outdoor unit , or you have confused the position of the breaker in the panel with on and off.breakers on the left are on when pushed to the right . breakers to the right are on when pushed to the left. take a volt meter and verify you have power to the outside unit when breaker is in either position. then proceed from there.you have not stated if you have a gas, electric or heat pump heater. but if you have succeeded in generating heat without power we are millionaires, cause it has baffled scientist for thousands of years till now.

I would check the hig voltage power supply to the unit. Check the main breaker and make sure it is on. Check the disconnect and make sure there is power at that point to the condensing unit. The contactor will kick in from the low voltage in the control circuit.