Question about Ruud UAMB Air Conditioner

1 Answer

High Pressure Shut Down

I have a UAMB-042 JAZ unit. Sometimes the A/C will kick on and within several seconds the outside unit will stop and the inside unit will keep running. If you go outside and push the high pressure reset button the unit will start and continue to run. I have had it cleaned and checked for freon. They also changed the fan motor and drained the freon to see if the expansion oriface may be clogged. The unit still has the same problem. The problem is intermitent and hasn't occurred with gauges attached to troubleshoot. Any ideas or help are appreciated.

Posted by on

  • goldenptl Sep 12, 2007

    We weren't charged for freon. A second company came out and finally realized the outside unit is 3.5 tonne and the inside coil is 4 tonne. They say that this can cause that type of issue. Supposedly you can have a larger unit outside but not inside within 1/2 a tonne.

    I appreciate the reply. Hopefully their diagnosis makes since to all here.

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 75 Answers

Hi, If the outside fan is running when this takes place and the condenser is clean, I believe its the High Pressure Control that is bad. There is a possibility that if the unit was opened and air was allowed to get into the refrigerant part on the system that it could cause this problem but unless the system was worked on just prior to this starting, I don't think this would be the case. The part about draining the freon to check the orifice doesn't sound right, This could be done with a pump down by closing the suction line valve at the condensing unit which leaves the freon in the condensing unit. If they charged you to replace the freon, I would question them about this procedure. Hope I have helped. kstfas

Posted on Sep 10, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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 repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Where is reset button on my outside a/c unit


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.

Aug 13, 2014 | Heating & Cooling

1 Answer

Ruud achiever photos Jakob 042-jaz


thermostat, outside unit bad contactor. inside unit fan relay.

Jun 04, 2014 | Ruud UAKA042 Air Conditioner

1 Answer

I purchaed a used T30 2475N7.5 with a three phase motor. Converted it to single phase. It acts like it is starting under a high load and kicks either the breaker or re-set every time there it pressu


it sounds like the pressure switch needs replacing as this unloads the machine from the check valve up to the heads if pressure present when trying to restart it will cause it to trip when machine stops should get air leaking from under pressure switch for 1-2 seconds then it will stop

Oct 30, 2012 | Ingersoll Air Tools & Compressors

2 Answers

Air Conditioner


Someone will need to find out if the compressor clutch is failing, or if it is loosing power due to a pressure switch or other problem.
A faulty relay or switch could get hot and switch off power to the compressor.

Aug 03, 2012 | 2006 Nissan Altima

1 Answer

My RUUD UAMB-924JAZ keeps shutting off. I have to go and press the red pressure switch reset button and it will resume operation. with the 100 degree plus weather, the pressure switch reset button no...


This is most likely due to ahigh pressure condition , are the outside coils clean> if not you can wah or vacume them out be carful to shut the power down if you wach the coils. and try not ot get the whole unit wet. wash it against the way the air blow out of the condenser, are you certain its the pressure switch that your resting.. ?

Jul 23, 2011 | Heating & Cooling

1 Answer

Bryant 552a model. outside fan starts - then stop, starts then stops on about a 1 minute or less interval? Any idea what's wrong?


The unit is kicking on and off by a pressure switch. More than likely low pressure which means you may need refrigerant. If it is kicking off on high pressure, it may mean your outdoor coil (looks like a radiator) is stopped up with dirt, grass, etc.

May 11, 2011 | Heating & Cooling

2 Answers

Our Ruud achiever heat pump's ac will not kick on?


Hi, there is no reset button for your high pressure switch. You need to see if you have lost power to the unit. Check the circuit breaker. By the unit, you will have a electrical box, disconnect. Raise the cover and pull the plug. You should have 2- fuses there, most do. If you can't see any go one step further by removing the plastic cover and see if they are in there. If so, try replacing both fuses. This is where you need to start. You will have high voltage to the unit such as 208/230 and control voltage from the stat and indoor unit of 24 volts. Find out and make sure you have high voltage first and let me know. Use my user name below, and get back to me, we may have to go into it more.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor

May 22, 2010 | Ruud UAMB Air Conditioner

1 Answer

I have a gulf stream pool heat pump. It tries to start and runs for a few seconds then shuts down. it will do this like 3 times then stops. will repeat about every 10 minutes. was working find 2 days...


Hi, sounds as though you may have several problems, or I should say there are several things that will cause a unit to short cycle and then shut down. First of all, the head pressure in the system if it is getting to high, will cause this unit to shut off on its high pressure switch. When it shuts off the pressure will drop and the switch will reset on auto and start again just to do the same again. Shut the power off to this unit. Take a water hose and give the coil that surrounds the condenser a good washing out. Be careful not to bend the fins down on it as this will prevent air from being released to the outside air. Use a nozzle and adjust it as needed. If the problem was a head pressure problem, this will stop it from short cycling. If I were on site with my manifold gauges, I would no right away if it was a head pressure problem. After doing this, if it starts to do the same thing again, being low on freon will also cause a system to short cycle. If it was fine 2 days ago, I doubt if it is low on charge. Make sure the outdoor fan is up and running as this will cause it to go off on high pressure cut-out. This does sound like your problem. What happens is the coil gets dirty over time and the air can't be removed properly. The compressor will start and the pressures will rise very fast and shut of with in a few seconds. After a few attempts to run, the compressor will lock out on internal overload until it cools off and resets its self. It may take 5 to 30 minutes for it to start and try again. Do the cleaning process I have asked not getting water directly into the electrical control panel, but give this coil a good washing. If this system has a return air filter somewhere, make sure it is clean. Do this and get back to me and let me no if this solved or helped at all. If not, we can go from there. Just look me up with my user name. I do believe its just a plugged condenser coil. The symptoms are as you describe to me. Please get back to me.
I hope the best to you,
Shastalaker7

Apr 10, 2010 | Heating & Cooling

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

284 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ruud Heating & Cooling Experts

Bill Long

Level 3 Expert

588 Answers

Tim Whalen

Level 3 Expert

3074 Answers

Dennis Boxerman

Level 3 Expert

1262 Answers

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

Answer questions

Manuals & User Guides

Loading...