Question about Ruud UPMC036 Air Conditioner

2 Answers

Compressor is showing ground fault

Today I had some plumbing that was done at my home and the AC unit had to be disconnected and moved. The plumbing contractor hired an AC contractor to move it. After completion of the plumbing work, the AC unit was installed and the breaker kept tripping. The AC contractor said that the compressor went out. There was no prior problems before this action.

I firmly believe that something was done wrong. Do you any suggestion or comments as to what could have caused this?

Posted by on


2 Answers

O.K. a breaker is hard to say cuz your facts are brief.does the breaker trip immediately when you try to reset the breaker? if so...the contractor's employee probably got the 2 "line" legs going to the same side of he disconnect. OR the high volt wire may have short to ground.if the existing wire is xtreamly old, the sheathing can crack and ground out tripping the breaker, quite possibly water may be in the conduit "finding" a crack and shorting out( the reason i bring this up is because a plumber was there.)

breakers often go bad over time....trip and reset the breaker at your panel. it should feel hard to move.there is a spring in there that has to be tight.if it doesn't make a good snap typr action.replace the breaker.they are cheaper than a new machine and they just go bad over time.

you'll have to get another qualified tech to check it out.i would try isolating the high volt circuit and go from there.

good luck.BEWARE OF THE SALESMAN IN TECH CLOTHING.make sure he is old, has dirty nails /uniform.that is a good indicator of a real tech.he may even be slobby too.

Posted on Jul 13, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 828 Answers

Things happen, how old was the compressor that failed?

Posted on May 01, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Airconditioner will not work

Defective compressor clutch, or ground fault in the ac switch circuit.
Disconnect lead to compressor from ac switch.
Run a fused line from the battery to the compressor, if it works without blowing the fuse, check for fault in the AC switch circuit.

Nov 09, 2013 | 1999 Cadillac DeVille

1 Answer

Jaguar XJ8 runs perfectly until today when a message said "restricted performance" what does this mean?

run a fault code check as it appears that the cpu has gone into limp home mode (restricted performance). The cpu runs checks of all sensors and when one gores out of parameters it restricts the engine to protect the unit and accessories.

Aug 11, 2013 | Jaguar 98 99 00 01 02 03 Xj8 Ac Compressor

1 Answer

Why does my 40 amp breaker for my 5 ton Rheem AC keep tripping? Not my air handler

Hello, usually if the compressor is shorted to ground it will keep tripping t he breaker. One way you can check yhis is disconnect power to the outdoor unit and use a ohmeter to check each winding of the compressor to ground. You can use the discharge line from the compressor as a ground, you should not read any resistance, if ou do the compressor is shorted to ground and will need to be replaced.

May 10, 2012 | Heating & Cooling

1 Answer

I have an lg split system airconditioner. The unit starts up fine and runs for a few minutes. After a few minutes it trips the circuit breaker. Could you tell me what causes this? Thank you

Sounds like an electrical problem.. or the compressor is beginning to fail. Check the wiring connections on top of the compressor for burning etc ... If OK, the compressor may be shorted out.
Make sure the power has been switched OFF before any testing is done.. Usually an LG will show a fault code on the display on the internal unit but a dead short on the comp will happen to fast for this to occur. One way to isolate a compressor fault is to disconnect it.. If the unit runs ( fans etc) with the comp disconnected and does not trip the breaker , then you have narrowed down what the fault is.

Jul 14, 2011 | Heating & Cooling

1 Answer

Problem is that the AC CUT OFF relay energised permanently. therefore electric clutch of compressor swicthed off permanatly, because current to compressor clutch goes through NC (Normally Closed) contact...

check for the cut off switch or sensor on the a/c plumbing to see if normally closed or normally open, and if it is causing the the AC Cut of relay to be energized permanently.

See if disconnecting the switch on the plumbinug changes anything. Or if using a test light to ground out the terminals does anything different on the AC system.

Feb 03, 2011 | Ford Econoline Cars & Trucks

2 Answers

Fault lite blinking

Make sure the ground from inverter to frame is intact. Make sure the positive and negative connections are clean and tight. If this all checks out, disconnect power to the unit for 1 hour and let is reset. If it still shows a fault then you really need to send it back to the manufacture for repair.

Jul 23, 2010 | RoadPro AC/DC Power Inverter 2000/5000w

3 Answers

The car has been sitting for almost a year. I started it today to drive out of necessity. The A/C clutch does not engage. How do i jumper across the pressure switch to add freon? Thanks, Ken

dont!!! an you start to add freon, itll start to cycle the compresor clutch until within safe operating pressure and then it will hold clutch in constant. charge liquid(with can upside down). if wont take freon in this manner than your more than low on charge. running low on charge will quickly destroy pump, especiallt those old harrisons. the refrigerant also cools the compressor. good luck and wear gloves-

Sep 04, 2009 | 1994 Chevrolet Camaro

2 Answers

The compressor on my home ac willnot kick on

The fan and the compressor both run off of the same circuit. Have your husband remove the cover on the condenser coils and check for power at the leads that go to the compressor off of the latching relay. If there is power there, then he needs to check the start capacitor or possibly the thermal overload switch (mounted on side of compressor)

Jul 11, 2009 | Heating & Cooling

1 Answer

Sub woofer

It is possible, but very rare that I have seen this, the unit's AC plug is not making good contact in to the wall socket. The extension cord's AC plug may be making better contact to the wall socket, and the socket on the extension cord is making better contact to the unit's AC plug. It could be something this simple.

In my mind however, I sort of think that there is a very intermittent fault, and it does not show up too easily. Sometimes moving a device can disturb it in such a way that its fault may not show up (fault gets to be masked). The fault may come back to haunt you. Time will tell which scenario is the right one.

Jerry G.

Jul 07, 2008 | Panasonic SC-PT1050 System

Not finding what you are looking for?
Ruud UPMC036 Air Conditioner Logo

Related Topics:

278 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ruud Heating & Cooling Experts

Donni Steen

Level 3 Expert

659 Answers

Bill Long

Level 3 Expert

588 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Are you a Ruud Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides