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AIR CONDITION COMPRESSOR FAN SHUTS OFF AND THEN THE BREAKER TRIPS AND FOWL SMELL IN AC UNIT

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You have either a fan problem or a capaitor problem either way you may want to call a service tech unless you know about ac unit. There is only so far you can go without the correct tools. Russ

Posted on Jul 23, 2009

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Duo Therm A/C (2009 Sabre RV) won't shut off


bad compressor relay on control board. The relay is not opening the circuit, allowing the compressor to stay running when unit is turned off. This overheats the compressor and opens a thermal disk shutting the compressor off. When thermal disk cools down, the compressor restarts under load and trips breaker.

Jun 06, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

Breaker trips on unit. Fuse in house is ok. As soon as AC unit turns on it trips the breaker outside next to unit.


you have a 'direct short' - most likely the compressor or fan motor.
you could isolate it to one or the other by (be sure all power is off) disconnecting one of them and turning the unit back on.
For example if the fan motor is shorted and you disconnect it - the breaker will hold and not trip and the compressor will come on - which will tell you that you need to replace the fan motor.
If you do this and it still trips the breaker then reconnect the fan motor and disconnect the compressor and try that.
If the breaker holds and the fan motor runs then you know the compressor is shorted.
Note: the fan motor can be replaced with not a lot of trouble depending on how mechanically inclined you are - but the compressor will take a qualified serviceperson.

Jun 06, 2011 | Heating & Cooling

1 Answer

Kenmore central air conditioning unit tripping breaker each time we turn it on.


The breaker tripping when you turn the unit on indicates a 'direct short' and 99 out of a 100 times the short will be either the outside fan motor or the compressor itself. Either way - you will need a qualified serviceperson to diagnose this problem correctly and make the needed repairs.
Best solution is to call AC person.
However, here's a good way you can get it down to either the fan motor or the compressor.
(1) With all power OFF - disconnect the wires to the fan motor
(2) turn on AC unit (a) if breaker trips it means the compressor is probably the shorted component. (b) if breaker DOES NOT trip and the compressor runs - it means the fan motor is shorted.
(3) If breaker tripped with the fan motor disconnected meaning the compressor is probably shorted you can then (with ALL POWER OFF) 'disconnect the wires going to the compressor' and re-connect the fan motor wires. Turn on power - and if fan motor runs (with compressor wires off) you know it's the compressor that is shorted.
After all this you will now know which of the two (compressor or fan motor) is shorted.
If it's the fan motor you can with 'limited mechanical experience' change the motor yourself, but if it's the compressor you will need to call a serviceperson because of the expertise needed to replace the compressor.

Jun 05, 2011 | Kenmore Heating & Cooling

1 Answer

Air Conditioner trips the 110v breaker, only when the outside temp is above 90 degrees. Unit has been checked several time and the circuit board has been replaced, but has fixed the problem of tripping the...


'Breakers' - are tripped because they are exceeding their amp limits.

The 'hotter' it gets outside - the 'harder' your AC has to work - and under normal circumstances this is not a problem - but when you have a fan motor or a compressor that is starting to 'break-down' (electrically) - often the AC's amp draw will exceed the limits of the breaker - thus 'tripping' the breaker.

I would suspect either the fan motor or the compressor is causing your breaker problem.

Eventually - the component (either the fan mtr or compressor) that is 'going bad' will go out completely and your breaker will 'trip' and not stay on when you try to reset it.

At this point you will need a Service Tech to determine which one is bad.

There is a possibility that your condenser coil (the one that blows hot air) is 'dirty' which will also cause a problem similar to the one you have - but it is less likely.

Also - if you've had the AC 're-charged' lately - it's possible you are in a 'over-charged' condition - but again, this is not very likely.

hope this helps.

Jun 06, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Air conditioner shuts off and trips breaker on power cord


It sounds like a short or ground in the compressor. If you have an ohmmeter, unplug the unit and use the meter to check the wires to the compressor. Connect 1 meter lead to the compressor case then to the wires coming from the compressor 1 at a time. If none are grounded then connect 1 meter lead to the Com. Then connect the other lead first to the run wire, then to the start wire reading the resistance each time. neither should be less than 1. You can also check the condenser fan.

May 25, 2010 | Whirlpool ACP102PS Portable Air...

1 Answer

Heat pump breaker tripped now no power to the unit at all


When AC unit trips the breaker it usually means one of four possiblities.

1) the AC unit is causing the breaker to trip, i.e. a shorted fan motor, compressor, or some other electrical component - in which case you will probably need to have a repairman look at it.

2) you've plugged the unit into a outlet that is connected to a breaker which is too small to handle the load the AC unit is putting on it.

3) a defective breaker (not likely but possible)

4) just a 'random' trip and if you reset the breaker it might work fine.

good luck!

May 03, 2010 | Haier Energy Star ESA3183 Air Conditioner

1 Answer

No power to portable air condition


If the filters are clogh with dirt , the unit breaker will shut it off ,it's avery common problem , but if after the filters were cleaned it keeps shutting off , could be a bad fan motor or the compressor itself could be grounded.

Oct 25, 2009 | Amcor Heating & Cooling

2 Answers

Outside unit tripped the breaker. flip the breaker


Check the fan relay or contacts first. If the compressor comes on then your fan may be locked and will need replacing.

Jul 06, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Why is my air handler fan motor tripping the 20


sounds like fan motor is going bad - replace

Jun 15, 2009 | Heating & Cooling

1 Answer

Air conditioner constantly shuts off


Are you saying that you have plugged the aircon into an extension lead then into a socket in the wall and that the smoke was coming from the extension lead part. If so I would suggest checking all your plug in connections and chenge the extension lead. A quick way to check the compressor is a cause is to put the aircon to fan only and see if it fails to trip out the circuit breaker, then put it back onto cooling and see if it trips (if it does on cooling then its a good possibility). Most aircons have a three to five minute time delay for starting the compressor to protect against power fluctuations (ie power cuts). Hope this s of some help.

Sep 11, 2007 | Frigidaire FAC107P1A Wall/Window Air...

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