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We have a air conditioning unit wired into the ceiling. Does not work. Every time we switvh it on it trips the electrical switch. Not sure what size and model number it is. Want to know what size fuse goes into the air con units and any other ifo would also be useful. Thanks

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Look for a swollen capacitor that is shorted out out a burnt compressor terminal.

Posted on Dec 18, 2008

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2 Answers

Air conditioner trips breaker on start


Question incomplete. Start manually or automatically? 120 V or 240V, nominal? If 240 then it will (or should) be hard wired, alone on its circuit. If 120, then it should not share outlet with too many so as to overload a loop breaker. So if these conditions are met, next step is to replace the breaker itself. Those do wear out, especially were there are frequent on-off (peak current draw) cycles such as an ac unit.

Jan 03, 2015 | Intertherm P3RA-036K Air Conditioner

1 Answer

Split ac of "LG " will run in normal condition for 3 to 4 hours but when the i switch off the unit ELCB will suddenly tripped, i have checked the pressure and current drawn by the unit it found normal,...


hi there this problem is normally caused bye a bad or should i say dry joint in your DB board check that especially your neutral wire isnt loose

Mar 05, 2014 | Haier Heating & Cooling

1 Answer

I HAVE A FEDDERS AIR CONDITIONER MODEL AED24E7F-C THIS UNIT TRIPS THE RESET BUTTON ONCE IN A GREAT WHILE IT RUNS FOR HOURS OR DAYS ON END AND THEN TRIPS. IT TAKE AWHILE AFTER THAT BEFORE I CAN RESET...


The reset button is part of the cord. The cord has built in arc detection. This is a complex circuit that monitors the unit and senses potentially dangerous sparks or arcing inside the internal components of the A/C (motors, switches, etc.) It sounds like the problem is getting worse - as they usually do. Sparking and arcing happen when dirt, corrosion, etc. accumulates and can result in pitted contacts. All of these conditions only make the sparks and arcs worse. Page 1 of the manual (left column) says this:

If the Arc Detection Device has tripped, the
reset button will pop up.


Follow these steps to reset the Arc Detection
Device:


1. Unplug unit from electrical outlet
2. Press the reset button
3. Plug the unit back into electrical outlet
4. Check to see if power has returned to the unit

Testing


You should test the Arc Detection Device
equipped power cord monthly, after every major
electrical storm, or if power to your Room Air
Conditioner has been interrupted.

Follow these steps to test the Arc Detection
Device:


1. Unplug unit from electrical outlet
2. Press the reset button
3. Plug the unit back into electrical outlet
4. Press test button. Unit should trip and reset
button will pop up.
5. Press reset button again for use
If above test fails, stop using the air
conditioner and contact customer service by
calling the following toll-free number:
1-800-332-6658 or email:
customerservice@fedders.com

I hope this helps & good luck!

Aug 30, 2011 | Heating & Cooling

1 Answer

Air conditioning continually working electric fan running, cab going cold. Have tried controls set to floor not screen


AC unit work best the higher they are, the cold air will drop to the floor and heat will rise to the ceiling. If you have a 20 degree split between the supply air and the return air your good.

Jul 04, 2011 | Heating & Cooling

2 Answers

Split ac runs for 2 hrs and MCB TRIPS


The most common reason is that the electrical power is not supply to the air conditioners. If the air conditioner operate for period of time then only it trips. Then , it could be possible that the MCB is under-sized. Please check the recommended MCB size.
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Mar 02, 2010 | Heating & Cooling

1 Answer

I have 60 amp circuit breaker on my electrical a/c heater with a 45 amp fuse. I had the unit for 7 years with no problem. This month the 60 amp circuit breaker keeps tripping when the heater goes off. The...


You're unit is a 31/2 ton according to the numbers.Normally, breakers will only be in a half way posistion when tripped. Yes, under most conditions, the fuse will blow before the breaker trips. I have seen this many times, the breaker may be weak, burned, loose wires and so tighten wires, check the condition of the breaker.It sounds like the breaker even though it is 60 amps, is the problem and you should replace it with out hesitating. This will solve you're problem. When you pull the breaker out, look at the metal clips that snap in on the buss bar to see if they have been overheating.And the buss bar its self. You will know. I am sure this will take care of you're problem. Good Luck,
Shastalaker7

Dec 07, 2009 | Goodman CKL42AR42 Air Conditioner

1 Answer

No air flow from duct on forced air unit


If there is no air coming through all of ducts, there are several things to consider. If you turn your thermostat to fan on, does air come out? If so you may have a switching|thermostat problem. May need to change out, not really hard you just have to turn off electric mark wires as you remove and turn back on. If nothing changed, make sure the circuit breaker has tripped, sometimes its hard to tell so flip it all the way off then back on. Now try to turn on again. If it comes on you need to find out why it's tripping the breaker, merely resetting it can pose a danger for the future. Professionally servicing the unit is important to the longevity of the unit. Now if you find out that unit is coming on but no air is coming out, it could well be that a duct has blown free and is spilling into attic or crawl space. Sometimes the unit forms an ice block in the evaporative area of the unit. In this case it would need quite some time off to thaw. Also the fan motor may be burned out. In that case you would hear part of the unit working with no output. These are a few of the most common problems with this condition.Most of which needs to be addressed by a Tech

Jul 15, 2009 | Whirlwind FH-778 Air Conditioner

2 Answers

Air condition problem


What type of thermostat do you have? If the fan is not coming on and neither is the compressor, then is more than likely a problem with the thermostat of control units of the Air Conditioners. The fan will come whether the compressor does or not if the thermostat and control unit are working correctly. Check for twelve volt at the control unit of the air conditioner ceiling unit. (Red Wire, should be labeled)

Jun 30, 2009 | Dometic Rooftop RV Air Conditioner

2 Answers

Central air conditioner doesn't turn on... Any suggestions?


If the compressor turns off and won?t come back on during a very hot day, the unit may have built up a high "head" pressure and the high-pressure limit switch may have tripped. This is usually located right inside the access panel on the compressor unit. Simply push the button to return it to operation. If your central air conditioner doesn't go on automatically: 1) Be sure the thermostat is set to "cool" and set below room temperature. 2) A central air conditioner should be on a dedicated 240-volt circuit; check the main electrical panel and any secondary circuit panels for a tripped breaker or blown fuse. If you find the problem here, reset the breaker or replace the fuse. 3) Make sure the furnace power switch is turned on and that the outdoor condenser's power switch, mounted on the outdoor unit, hasn't been shut off. Also be sure the 240-volt disconnect next to the compressor (in a metal box, usually mounted on the house wall) hasn't been shut off. 4) Turn off the power to the air conditioner and check the thermostat. 5) Remove the thermostat's cover and unscrew the wire from the Y terminal. 6) Turn the power back on. 7) Holding the wire by its insulation, touch the bare end to the R terminal and hold it there for about 2 minutes. If the compressor kicks on, the thermostat is faulty; replace it or call an air conditioning technician. If the compressor doesn't go on when you hold the two wires together, turn the power back off and call a service technician.

Jan 18, 2006 | Haier Energy Star ESA3183 Air Conditioner

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