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High ampere compressor - Dometic Rooftop RV Air Conditioner

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Not clear on this post. If you are stating that the compressor is pulling high amps, you probably need to clean your outside coil. Shut the unit off, remove the housing, and use a regular garden hose to wash all of the dirt out. DO NOT USE A PRESSURE WASHER.

Posted on Oct 04, 2009


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Taking high ampere and tripping

Remove the belt and test motor for amp draw. If motor runs normal, most likely problem with compressor or check valve. If still high amp could be short in windings or motor start switch stuck on. If motor does not turn (loud hum) try spinning by hand to see if it starts. If motors runs after spin by hand, bad capacitor. Good luck

Oct 29, 2015 | Ingersoll Rand Air Tools & Compressors

1 Answer

My york chillar model number mmts45sbad46/240g going high ampere

Identify what is drawing over amps, a blower motor or a compressor. The ac unit rated boltage needs be checked and compared to supply voltage and needs to ne within + - 10%

Sep 05, 2015 | Heating & Cooling

1 Answer

The compressor of my split a/c stops working but will pick again after some time

If your A/c is non-inverter type, then its normal.
another cause of stopping compressors are due to high amperes comming in to the compressor. (power surge or high ampere)

have your unit cleaned first, then check the amperes from your compressor using a clamp ameter.

another cause is the starting assist (a small box-like thing beside the starting capacitor). this prevents your compressor from running even if it has to. you can by-pass that starting assist thing.

Jan 09, 2015 | Heating & Cooling

1 Answer

About once a week the compressor get hot and shuts off. I have to leave hom for 12 hours then turn unit on and it cools for another week and shuts off again?

If compressor starts, check the running current of the compressor. If amperage is too high together with the discharge pressure, try cleaning the condenser fins and then after cleaning test the amperage and pressure again. If the pressure is still above the normal operating of 300psi, release some freon. If the discharge is too low below 200psi and running ampere of compressor is below the rated ampere of the unit add some freon from the suction line until it reaches 60-65psi. If still suspicious with the unit, try removing all freon charge and evacuate the system to 30 in. Hg to remove any moisture from the system and hold the vacuum for 30 minutes. If no increase in system pressure, recharge and check pressures and amperage.

Aug 31, 2011 | Frigidaire FAH085N1T Air Conditioner

1 Answer

Compressor will not start, keeps on tripping with high amperes

Check the starter relay. If that's not it then the compressor is bad.

Feb 11, 2010 | Sub-Zero 642

1 Answer

Fuse Blows quickly?the moment I turn swith ON


Check the ampere rating of your compressor, which is indicated in the nameplate. you can size up your fuse from there. the ampere rating of your fude should be bigger than the compressor amp rating.

Hope it helps

Apr 28, 2009 | Air Tools & Compressors

1 Answer

Compressor motor run in high ampere and then shut off

Check compressor capacitor to see if it’s good then check the contactor points and see if they are burnt or discolored if so then replace and make sure no wires are loose or burnt, then check the condenser coil to see if it’s dirty. Check to make sure outdoor fan is running and at full speed, if not then check the fan capacitor,and with the power and unit off spin the fan blade to see if it spins freely, if not the bearings are bad in the motor and it needs to be replaced.

Apr 20, 2009 | Haier hwr10xc6 Air Conditioner

1 Answer

Freezer not working but motor working

hi! that symptom correspond hizzing sound on evaporator.factors are to be check before you can diagnose insusfficent cooling effect check your actual opearating current using clamp ammeter,set to amperes rating,clamp to one line source take thereading,compare reading on the tag locate at the backside of freezer there is rated ampers indicated.if you got low amper rating your system is under charge,thats the time you recharge your system by qualified ref/ac technician.but if you got high amper rating your filter need to replace as well as your refrigerant.check also the high side pressure by service pressure gauge manifold or the compressor discharge pressure if can compress to 300 to 500 psig.if not your compressor has loose compression.compressor is worn out.

Mar 17, 2009 | Kenmore 61042 Top Freezer Refrigerator

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