[AL]

To clarify I do have Aqua Hot heat and tow kick , but not coach heat . The Prevost heat from the OTR system . Sorry for the confusion .

[George]

Al, Just to clarify, are you saying you are getting heat at the dash, but with the OTR turned on you are not getting heat in the rest of the coach?

[Bernard]

I have the same issue in my 1984. It has been suggested that I rebuild the main water valve by the heater core, but I haven’t gotten around to that yet. They can apparently get gummed up and stop opening when it calls for heat.

[Jeff]

Jon , That is correct . Not sure if connected but 2 months back I had the same issue on the Air condition side . I dont see how they could be connected as one is water the other Freon . Any ideas where to look and thank you both for the rply .

[Jim/Chris]

Well we have an appointment in the morning at Prevost in Jacksonville and will post the repair and cost .

[Dick]

Well after our trip to Prevost in Jacksonville all is well . Turned out there is a 12v wire running from the alternator that was burned . The wire runs to the relay in the front which controls the OTR heat . It did take 2 hrs due to the fact the wire was burned on the back side .

I had no issue with it taking that long because the repair also fixed another issue we had with a battery dash light . It seems we originally thought we had a imbalance issue , however after replacing the Vantare installed voltage balance we still had a issue with voltage readings . Well Paul our Prevost technician said this will take care of you dash light also . So all is well and our experience could not have been better . Thank you to all that offered help .

[Archived]

Any insight into why the wire burned?

[Archived]

It was not protected and was sitting on the alternator . So after the splice he covered it with wire loom .

[Mike]

More stuff to look at.