Question about Dometic Rooftop RV Air Conditioner

4 Answers

Loud Noise The Duo-Therm roof mount a/c 559 series unit on my 1981 Avion TT makes a very loud noise when running. Somewhat of a vibration or unbalanced type of noise. Any suggestions as to how to repair it? Thanks

Posted by on

  • 4 more comments 
  • 3fishnet Aug 02, 2008

    Comment by ginko, posted on Aug 02, 2008
    If you want to DIY you will have to individuate the noise source, take apart the unit and replace fan, to get replacements contact

    I have only owned this tt for about 1 year and have never taken the hood off the a/c unit on top of tt. How do I individuate the noise source from the "unit" or the "compressor"? How difficult is it to replace the fan bearings?
    Is this unit supposed to run continually when turn on are is there a thermostat inside to turn it off and on?

  • 3fishnet Aug 05, 2008

    My tt/rv refrigerator is a non-defrost type. Lately, I have had to defrost the freezer section but not the refrigerator. What is going on?

    Thanks,

    Lonnie Davis

  • 3fishnet Aug 05, 2008

    I have only owned this tt for about 1 year and have never taken the hood off the a/c unit on top of tt.

    How do I individuate the noise source from the "unit" or the "compressor"?

    How difficult is it to replace the fan bearings?

    Is this unit supposed to run continually when turn on are is there a thermostat inside to turn it off and on?

  • 3fishnet Aug 16, 2008

    The trailer is located in an area that would be almost impossible to get a repairman to come to repair it. The trailer is not moveable, so I want to repair it my self or take it apart and take it to someone to fix it.
    How do I individuate the noise source from the "unit" or the "compressor"?

    Are there speical tools required to take the unit/fan/whatever apart to repair?

    How difficult is it to replace the fan bearings?

    Is this unit supposed to run continually when turn on or is there a thermostat inside to turn it off and on?

  • 3fishnet Aug 16, 2008

    Ok, sounds good...but how difficult is determining if it's the fan bearing and how difficult is it to remove and replace the bearing? Is this something I can do or do I need to take it to someone with speical tools/knowledge?

  • 3fishnet Aug 19, 2008

    Why is it no one answers all of my questions? Such as:

    1. How difficult is it to take the a/c unit apart and determine if it is the fan bearings going bad causing the noise?

    2. How difficult is it to repair/replace the fan bearings?

    3. Is this something I can do with regular tools or will it take specialized tools?

    4. Would it be better to take it apart and take it to an A/C repair shop?

    Thanks,

    ltd

×

4 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,268 Answers

Check the mounting gasket. Make sure they are tightly screwed on. Installing 2nd gasket can also be done.

Posted on Aug 16, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 230 Answers

I think the fan bearing got damaged ,so check that ,if it damaged or not in good condition then replace that

Posted on Aug 16, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 521 Answers

Yes obiviouslyl.

Posted on Aug 14, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Dometic Master
  • 19,396 Answers

Check if noise comes from compressor or from the unit . If it is from the unit is probably a fan bearing in need of replacement.
Check last pages of your manuals for service repair phone number.

Posted on Aug 02, 2008

  • Ginko
    Ginko Aug 02, 2008

    If you want to DIY you will have to individuate the noise source, take apart the unit and replace fan, to get replacements contact

    Dometic

×

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

2001 Suzuki Esteem wagon develops a loud vibrating noise when the engine is under load. When pulling up to a stop light, the noise is quite loud even at full stop. Switching from drive to neutral stops the...


It sounds as if the mounts or trans/engine mounting hardware is becoming loose...Unless the engine is out of timing and running rough ....Take it to the tech that repaired the mounts and have them inspect their work.......

Dec 13, 2014 | Cars & Trucks

1 Answer

After compressor on,Sears/Kenmore ac makes a loud vibration noise


sounds like head pressure problem it is most likely clogged on condenser try washing out really good then try again

Sep 10, 2009 | Heating & Cooling

1 Answer

Roof air unit too loud inside; quiet outside.


When you say loud, do you mean as in airflow noise, or vibration like noise? I take it this is a ducted system as well. Does it have quik cool option on ceiling assy.?

Jul 28, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

I have a 13,500 btu coleman on our 1989 avion camper. It was making a very loud noise for some time, and vibrating then the motor locked up on it. My husband thinks the blower went out on it. It was...


You should be able to turn the fan motor freely by hand. If there is any resistance or the noise turning it by hand, then the fan motor is definitely bad. Is it a wall thermostat unit or manual controls? Wall thermostat, you can use a jumper wire from the 12+ terminal of the thermostat to the HG terminal and the fan should come on, if not, then the motor is bad.

Jun 24, 2009 | Coleman Mach III Air Conditioner

2 Answers

Loud humming noise coming from 360


The loud humming noise is usually the DVD drive. It is very fast but is very loud. If you have the NXE dashboard you can download games to you Xbox 360 to run them from the hard drive (you will still need to put in the disk for copy protection issues). The Xbox should make less noise then. Try to mount the Xbox 360 on a hard surface which is in contact with a soft floor to reduce the noise travelling through your home.
If it is making a loud noise while there is no disk in the drive then take the console to a Microsoft dealer whenever you can to have them take a look at it.

Feb 13, 2009 | Microsoft Xbox 360 Console

1 Answer

Kenmore 90 Series Washer Noise--Won't spin


For Tegres
If the noise is only when there is water flowing, check tighten the screws that mount the water fill solenoid valves to the case. The solenoids operate on line current so they vibrate at 60/50Hz (local suppply frequency) if they are loose at all, the noise is loud the body acts as resonators

For SRONEAL, that symptom describes coupling failure exactly, have you removed the coupling to check, often times the motor side hub is stripped, but there is no visible external damage

Jul 23, 2008 | Kenmore 15864/15862 Top Load Washer

1 Answer

Haier ESA 3185 AC won't cool; makes escalating loud vibrating noise near front panel/ filter


Have someone check the run capacitor of this unit. If the run capacitor is bad over shorted it can cause the unit to run and short cycle on a current overdraw. This makes for an electrical imbalance in the compressor motor. Next step is the compressor is faulty.

May 16, 2008 | Haier ESA3245 Thru-Wall/Window Air...

Not finding what you are looking for?
Dometic Rooftop RV Air Conditioner Logo

347 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

Donni Steen

Level 3 Expert

659 Answers

mike cooper

Level 3 Expert

884 Answers

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

Answer questions

Manuals & User Guides

Loading...