roof airs

[Busnut83]

I am working on a 98 prevost,,, it has 4 roof airs,,, my problem is only 2 have controls...
the coach has 2 wall thermostats but they must not be connected...  question- the roof air with no controls are the vents or are they air conditioners?

[Nick Badame Refrig/ACC]

Hi Busnut83,

You may just have dometic penguins that are controlled by the dometic comfort control center t-stst..

If so, each t-stat [comfort control center] will control two roof units via the zone button on the bottom

of the t-stat. Push the zone button and either zone 1 or zone 2 will display set points.

Without more info, this is all I can offer.

Good Luck
Nick-

[Joe Camper]

Agree with Nick but all the motorhome prevos would not be like that only entertainers.

ALSO

Are you sure the 2 thermostats you are looking at arent for the webasto or the aqua hot to control the 2 different cabin zones?

Who did the conversion

[Busnut83]

dont know who did conversion.... bus sold as a team bus...

[Joe Camper]

I can only asssume by that answer that it is probably an entertainer coach and you did not get any documentation on it.

Did you figure out the thermostats or not??

[Busnut83]

wall thermostats dont control any...  they are dometic pinguins... one controls the nearest one without any controls..  ..

[Joe Camper]

They have to have d/c 12 volts to the thermostats or they will not work.

Are the displays blank or are they reading something. That will verify if they have d/c.

[Busnut83]

thermos are blank.

[Joe Camper]

OK then that is actually good news it will be easy to fix there is a d/c fuse to them that is burnt.

I would guess the dc distribution panel is up above the driver over the drivers side window/door. Open up that compartment and look for a spade fuse that is blown it will most likely be a small one 8amp or so. Usually they have things marked pretty well if you have what I think you do.  If they are not marked go thru the fuses with a continuity tester till you find a bad one.

Are the tanks level sensors working or are they out too. I have seen them on common circuts with the thermos.

Once you get 12 volts to the thermostats your a/c's will begin to work. That is of course,  unless that the a/c circuts powering them are not on or functioning correctly either. But they probably are just make sure you have the a/c breakers for the air conditioners on.  

[ruthi]

Tom, your funny, ha ha. Ed, I have been really good this yr, and I talked to Santa, he said you all can forget it, you been baaaaaad!