Question about Ruud UAKA042 Air Conditioner

2 Answers

High side low side pressures don not respond to freon levels

I have a new 2stage Ruud heat pump. It runs well in cooling mode but makes a rumbling noise in heat mode. The rummbling noise is in sync with vibrations felt in the suction line. The freon pressures suggest a little low in freon. The addition or removal of several pounds of 410A have no effect on the highside or low side pressures. Current draw of the compressor is 6.5 amps on stage 1 heating and 10 amps on stage two heating. I would not have looked at it if it were not for the noisy operating when heating. What is going on here? Why does it not respond to freon additions with pressure changes or current draw? I have added as much as 6 pounds in this 3 ton unit.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 334 Answers

Chances are you have a TXV already installed. Thats why simply adding refridgerant is not effecting the pressures.

All you are doing by adding refridgerant is overcharging the unit, and possibly forcing the compressor to try to pump liquid instead of vapor. Not god for the compressor.

If the vibration noise is your only problem, I would try emilinating the vibration.
Find where the lineset is touching other parts of the house and install vibration dampening opads there. If the airahndler is mounted to the structure of the house, install vibration reduxction pads there too. If it is suspended from the floor joists you may have to change that mounitng method.

You can suspend the drain overflow pan and then set the unit in that on dampening pads, or set it on blocks from the floor/crawlspace.

Check your data sticker to find out how many pounds of refridgerant the unit takes.

By now, you are probably way overcharged.

Posted on Dec 24, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 85 Answers

Have you tried to add a txv to the indoor coil? It sounds like there is restriction... Obviously if it's also a new indoor unit it allready has a txv, and if thats the case sorry, just wanted to make sure..

Posted on Dec 11, 2008

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,
a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Why do I have only low fan speed on my Senville indoor units? There are no errors on the screen.


So attempt out a couple of very mouse pad simple improvements. Maybe add a desk mild or two, which can offer a spotlight to the area, and give your pressured eyes a split. AmanStino Lightning Cable Apple MFi Certified 1M Nylon Braided Charging...

Jan 05, 2017 | Heating & Cooling

1 Answer

Why do the fans on my indoor units only run at low speed? And I have no errors.


I watched how they labored and immediately saw that they had been bending back again their fingers as they were typing. Wireless Mouse AmanStino ML11 2 4G Cordless Mouse with USB Nano Receiver...

Jan 05, 2017 | Heating & Cooling

1 Answer

I have a older Carrier heat pump, model 38YKC060. Does anyone know how cold it will continue to work at?


Heat pumps are of little or no value at temps around 40 degrees or below. And if you use the strips it will cost a small fortune if you have relatively high electric rates as most folks do.

Jan 04, 2017 | Heating & Cooling

1 Answer

My Coleman furnace 4322/729 model lights the pilot but won't cut in . What could be problem ? Cleared lines Complete


Gas valve not opening? Does it have the exhaust blower that pulls vacuum switch allowing burner to light?
(1) Thermostat not working? Has to complete the circuit in or gas valve to open.
(2)Can be a stuck or bad gas valve. Try tapping the side of the gas valve body while thermostat is calling for heat. Tapping,not pounding. Like lightly,yannow? don-ohio (:^)

Jan 03, 2017 | Coleman Heating & Cooling

1 Answer

We have royal red furnace to heat our home.The fan dose not stop.


Details.......does the furnace function normally otherwise? Might just be a stuck fan switch. Make sure the thermostat hasn't been set on Fan ON setting or summer air circ. on older furnaces.
Find the fan switch and tap it and see if fan quits. If it does,fan switch is bad.probably. Always make sure your air circ. filter(return air to furnace) is replaced every 3 mo. or so,too. don-ohio (:^)

Jan 03, 2017 | Royal Heating & Cooling

2 Answers

Replaced ac unit with new compressor. Fires up as usual but compressor wont start.No fault code coming on controller. Whats the problem?


possible causes include
excessive gas
low gas
relay not working,
faulty thermostat
faulty start/run capacitor
bad circuit board

Jan 03, 2017 | Heating & Cooling

1 Answer

My oil furnance is running but when it reches temperature it shuts off and will not come back on until we bleed the lines


You have a small leak on the suction side of the pump between the tank and the pump. when this happens the pump looses prime each time the furnace shuts down and when the furnace tries to fire up again the saftey device trips before the oil gets to the burner.

Jan 25, 2015 | Heating & Cooling

1 Answer

Why does home central air conditioner will only cool to 80 degrees?


Because it is low on Freon. Do not run it low or the compressor wont be able to cool and you will burn it up. If it has run more than 1 hour in 90 degree heat the compressor is probably already damaged. Have a HVAC professional look at it, but if you were still using id plan for the worse, a complete replacement.

Jun 29, 2014 | Heating & Cooling

Not finding what you are looking for?
Ruud UAKA042 Air Conditioner Logo

590 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ruud Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Tim Whalen

Level 3 Expert

3069 Answers

Dan Webster
Dan Webster

Level 3 Expert

8205 Answers

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

Answer questions

Manuals & User Guides

Loading...