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If you are talking about the condensor that sits outside,there are high pressure and low pressure devices that have a red button on the top of them, turn off power and push the button. They are sometines located inside the unit under the fan. Generally there are none and the unit has internal overloads that kick it out. they reset themselves after the compressor cools down. If it resets after cooling down then ask yourself why it got hot. use a hose and clean the coils around the unit.sometimes helps. make sure fan is running on the condensor outside. It should come on first.
If the fan is not running is the compressor not running also...if neither is running the possible reasons are 1..no power to outside unit...2..bad contactor on outside unit.is this buzzing if it is this indicates no power...3 bad capacitor,do both compressor and fan humm then quit humming and hum some more...4 high pressure switch has shut unit down because fan wasnt running if compressor was running but not fan....if your unit has this there will be a manual reset button where the lines come out of unit...if compressor was running and fan was not...1 bad fan...2 bad capacitor.. if you do not have any electrical knowhow i would recommend calling a hvac tech to come and fix unit...Thanks
Due to very low ambient temp, the fan will not run. Once the pressure build up, it's automatically run for some time and again cut off. But if you keep Heat mode and still tem not raised in your room means the reversable valve not working and hence the compressor and out side fan also will not work. Keep "Heat" mode and temp setting +29 to get better heat. Hope is it helpful?
Your out door unit fan motor not runs due to pressure not build up at Heat mode. If its cool mode only fan runs with compressor when thermostat calls for it.
Without having technical knowledge, don't press any reset button. Hope it's helpful?
I was leaning towards a bad contactor. Either sticking sometimes or not making good contact. I would inspect the contactor for pits or burn marks near the contacts. DO SO WITH POWER OFF of course...but, what's the reset button you are referring to?? I'm assuming this is a heat pump, please send model number!!
The thermostat has a timer on the on- cycle (5 min delay for the outside unit and blower inside) if you are not gonna call a service guy then ( for $25) you can go to homedepot (whatever you got out there) and buy a honeywell vertical digital heat and ac t'stat.
this one doesnt require you to set it up for a particular application. this may solve your problem. but as for warm air out of the registers you need a service guy to check that
Two things; outside does the compressor try to come on? If not you may have a switch\Thermotat problem. Also make sure the breaker to the outside unit hasn't tripped. If it has tripped there may still be a problem after you turn the breaker back on. If it's only the fan that's not coming on outside you will need a new capacitor or fan motor and compressor(if the fan motor is replaced you should have a new capacitor also. If it has been intensely hot your unit might have just gotten overworked. Then resetting the breaker is all that is needed. If you have continuos resettings you MUST call a qualified HVAC Tech.
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