Question about Dometic Rooftop RV Air Conditioner

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Manual? Did you ever get your hands on a manual for the roof top unit to replace the fan? I need a manual too...for same reason.

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  • edcone Sep 08, 2008

    The outside fan on my Duo Therm model 57915.531 has not been used in a year and is frozen. I can not even turn it with a vice grip. What is the problem? with it and if I need to repalce the motor, where can I get one without paying an arm and a leg?

    Ed

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  • Dometic Master
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Why are you replacing fan, what was original problem? Make & Model?

Posted on Aug 16, 2008

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1 Answer

Unit vibrates bad and is not fan or fan motor on roof top


need to check squirrel cage on evaporator end of fan motor shaft.

Aug 19, 2015 | Heating & Cooling

1 Answer

I purchased a dometic roof top ac unit mdl#641515.301c0, however on the website i cannot find install manual or user manual


What part about installation are you having problems with, and what are you installing it on? Do you have both upper (roof) unit & lower ( at ceiling) ? Is it a ducted system or blowing directly from ceiling assy?
Check this link as well , you may find 6300 series is same install.
http://www.dometic.com/enus/Americas/USA/RV-Products/Manuals-and-Instructions2/

Jun 02, 2012 | Dometic Rooftop RV Air Conditioner

1 Answer

Intertherm ac roof top ac fan want turn


Try turning it by hand to make sure it isn't seized up. If it won't turn replace the motor. If it will turn, check the capacitor for the fan motor and replace if necessary. You can also verify you have power going to the fan motor.

Sep 06, 2010 | Dometic Rooftop RV Air Conditioner

2 Answers

Fan not blowing in coleman trs rv roof air


well check a few things first....have someone remove the cover and reach in with a hand and try to manually spin the blade...free spinning?....then tell the person below to click in the on postion while someone views from up top.....is it humming? or even trying to spin?....if not check the fuse on the RV that protects the A/C unit.....good?.....now replace the capacitor ( it the silver or gray can looking thing that the motor wires run to) only the correct size will work w/o causing further motor damage.

Jul 08, 2010 | Dometic Rooftop RV Air Conditioner

3 Answers

Fan does not run. Compressor is running. I can spin the fan, just doesn't run.


If the fan motor is getting the proper voltage and the capacitor is good the motors bad.
Either open windings or overload is open.

Mar 15, 2010 | Dometic Rooftop RV Air Conditioner

2 Answers

Roof Top air conditioner makes too much noise


Hello; Those roof tops can be noisy. Are you able to determine what is causing it? The fan? The A/C pump? Over tume, the vibration isolators that are rubber cushions the pump is mounted on, get weathered and hard and they no longer absorb the vibrations of the running pump. Those are easily chked and changed. The next point of excessive noise is the unit as a whole is tranmitting the combination of all the vibrating parts including its own housing. Here too we have a remedy. The roof unit has a seal between it and the camper roof around the hole it is fitted in. The seal is foam rubber and reasonably thick enougth to serve a purpose more than to seal out water and air. After and over time this seal ends up crushed from the weight of the a/c unit. Then the A/c unit comes in contact and is actually resting on yhe roof with what is now a very flat hard gaske. The roof unit is now vibrating the roof. This is as destructive as it is annoying. Ok? Now let's get rid of 80-90% of the noise. Check and replace compressor vibration isolator mounts. There are 4 bolts holding down the A/C unit. Sccess them from the inside by removing the ceiling trim and cover.There should be one on each corner. Bolts removed, one person push up on the unit and another on top lifting the unit. There are wires going to the unit and those may need to be disconnected. Clean the roof and the a/c where yhe seal goes.You can get a new seal from camping world or rv supply. Have your measurements, Unit make and model when you go.Assembly is just backtracking. On assembly, thinhs to pay attention to are:
Put the new seal on the A/C unit, not on the roof. It takes two people to ligft and set the unit back into the hole and center it in the hole. Don't slide it on the seal. lift it if it hs to be moved or the seal may roll over..
The wiring disconnected earlier must be dealt with and put in place for reconnecting.
Now start the bolts that hold the unit down.
Make sure-- Unit is centered
Wires can be reconnected
The four hold down bolts have their washers.
Someone go topside and verify the seal is properly in place. Measureing the for corners fo even height is one way to ck and looking under the unit is another. Now tighten the four bolts evenly. corner to cross corner. measuring again will help confirn its pulled down evenly. Pull it down no more than 1/4 to 5/16 of the seal thickness. Wire it up and put the trim and plastics back on and light it off. (run it and ck for noise and vibration. NOTE!!! The A/C unit cannot touch any solid part of the roof. Reason it was centered. Always ck the unit before each trip as you would any other psrts on the exterior of the camper. Good Luck Angie.

Sep 15, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Replacing fan motor on a roof top unit, has a thru shaft and was sent both replacement fan blades, can not get the squirrel cage off the evaporator end, not enough room to get your hand in there. this is...


If I have both blades and double ended motor, I just use a hacksaw and snip and cut the old one out. If inaccessable you can probably hammer the shaft from the other end, I can't recall if this one has a belly band or not but normally you can tap the shaft right through the armature.

Jul 14, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

10yr Vulcan Central Heating unit. Had tech come out and said main fan unit was faulty. I replaced myself and still not working. I discovered the O/Temp manual switch had cut off power. When I reset the...


I have the same problem, heating unit will not ignite, it trips out, i go into the roof cavity and remove the top of the unit (4 screws) and there is a motherboard, it has a Green light flashing what tells you the type of fault it has, mine has 3 Flashes telling me it a combustion air pressure system failure, ithen push the reset switch and it starts to initiate, a red light comes on and then it ignites and it will work for about 30 minutes to an hour and a half.

Hope this helps
Shane

Sep 08, 2008 | Heating & Cooling

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