Question about Dometic Rooftop RV Air Conditioner

1 Answer

Unit hums when turned on no fan

Switched on wall thermstat to cool, unit hums. Flipped fan to hi and changed power from auto to on and unit with fan turns on and starts to cool but turns off after about 15 seconds. Tried this a few times and gave up before I burned something out.

Posted by on

1 Answer

  • 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.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 713 Answers

,Hi,the problem is from the thermostat or the relay fuse,one of them is malfunctioning,seems they are weak and needs a replacement,i will suggest you contact an AC technician to do the replacement,so you don't end up blowing the whole unit as a result of bad connection.

Thanks and good luck

Posted on Jun 01, 2010

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

Goodman air handler ARUF036-00A-1A does not blow air in heating or cooling mode only hums/buzzes, what could it be?


Looking at the wall thermostat, you will see the fan switch that has two settings: fan auto, fan on.
You will need to place the fan switch in the fan on position for testing purposes.
This will make the indoor fan run continuosly, and never cycle off.
In the fan auto position, the fan will turn off when the thermostat temperature setting has been satisfied.
Remove the air handler access panel.
Is the air handler fan operating?
If the fan isn't working see if you can listen closely if it is humming, or can touch the motor to see if it is hot.
If it is humming and has a bad capacitor, you can tell this without having an electrical tester by spinning the fan wheel by hand.
Be very careful... making sure your hand won't get cut by the fan wheel spinning when it starts up.
If the fan spins and picks up full speed, replace the defective fan capacitor.
It is the shiny silver metallic cylindrical object with electrical wires attached to it.
Make sure you write down where those wires attach and turn the power off before removal as they carry 240 volts to the fan motor.
If you find that the fan wheel doesn't turn freely when you try to spin it by hand, the bearings have seized and you will need to find another fan motor of the same size, shaft length , speed , and horsepower to replace the defective motor.
Keep in mind that a humming sound in the air handler COULD be from the transformer instead of the fan motor.
The transformer is a black cube shaped device with electrical wires attached to it.
If the 24 volt transformer goes bad, your thermostat will not function and nothing will come on.

Dec 01, 2014 | Goodman Heating & Cooling

1 Answer

Fan wont run on auto


Make sure your tstat is programmed for electric, not gas. Or in the settings you want that the TSTAT CONTROLS THE FAN.

May 23, 2017 | Dometic Rooftop RV Air Conditioner

2 Answers

Circulating fan is running continuously.


indicates that either the fan setting is on FAN or there is a error code stored in the circuit board. Look for a blinking light through a small viewing port in the front panel door.

Jan 16, 2011 | Ruud Heating & Cooling

1 Answer

I have thru-wall PTAC Amana PTH093B35AM unit. I


see if you can find a new board the power failure fried it

Jun 19, 2010 | Amana PTH093B35AM Thru-Wall/Window Air...

2 Answers

RVP 8000 A/C just experienced slight power surge. Compressor on.


I'm leaning toward sticky relay as well, but if you want to confirm it's not thermostat, remove thermostat from wall, and temporarily disconnect the yellow wire from thermostat (compressor) when/if, it happens again. If compressor stays running, I'd say relay for sure.
Just for future reference , Gray wire from thermostat is low fan, green wire is high fan, yellow is compressor, blue is ground. ( For cooling side) The red is 12 v + to furnace and white is negative to furnace.(heat side)

Jun 10, 2010 | Coleman Mach 15 Air Conditioner

1 Answer

I have a propane furance in a mobile home. When I turn the thermostat up the furance comes on a heats the room to the set tempature. after the room cools back down the thermstat clicks but the burner will...


if you are getting power to the gas valve, then all of the safety switches should be closed. if you have any drain lines off of the inducer fan and at the bottom of the heat exchanger, make sure they have a trap and have water in them. the pressure switch may be the culprit.

Dec 09, 2009 | Coleman Propane Forced Air Heater...

2 Answers

Unit will run if the thermostat is switch on ON, but if left on AUTO unit will hum and won't run.


For most Thermostats on and auto is for the fan switch function. There s usually another button for heat off cool. When you turn a\c or heat on , the fan switch should be on auto.

Jul 10, 2009 | Heating & Cooling

2 Answers

Bought a used Martin Logan Dynamo subwoofer a couple days ago and have a very loud hum when the ac cord is plugged in, even if the speaker is not connected to an audio source. The "hum" can be heard in any...


Neither the amp or the sub have grounded power cords.

I have discovered the ML Dynamo takes about 30 minutes to switch to standby in auto mode.

With speaker level inputs connected to the Onkyo A807 amp, both units powered from the same wall outlet, Dynamo sub on Auto, the sub hums for about half an hour after the Onkyo is switched off, then the sub goes quiet. Not so good.

I connected a bonding wire between the two units on 3_7_09. If I smoked some old audio gear I could just look at that as an opportunity, right?

Works fine. Now I have the ML powered from the wall and working normally.

Jun 30, 2009 | Dynamo MartinLogan Subwoofer Speaker

1 Answer

Heat doesn't work on ac


You need to check if the heat strip is still good on it or that it is receiving power. If its getting power, then the strip is bad.

Apr 01, 2009 | Fedders AEY18F7G Y Chassis Heat/Cool Room...

1 Answer

Fan hums


go on top the RV to the unit and take out the screws holding the cover on and the fan motor is under it

Jan 26, 2009 | Dometic Rooftop RV Air Conditioner

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

Related Topics:

50 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...