Community Forums

n2zon · 03-23-2023, 03:42 PM

I seem to be losing small amounts of propylene glycol solution, a but more than I'd expect from normal evaporation. I've just finished putting everything back together after checking all the inside heat exchangers and lines. There aren't leaks I can see, including the lines into and out of the kitchen slide. All the others are stationary, not in slides.

Guess I'll check the circulator pumps next. I know where those are.

But does anyone know where Tiffin put the wet bay heat exchanger for the AquaHot? As my sig line says, it's an '06 Bus.

If nobody knows I'll give Tiffin a call and see if they know before tearing into things very much.

DFitz · 03-31-2023, 09:29 PM

On my 08 Bus, the basement heat exchanger is located in the same section as the black/grey/fresh tanks. On mine it's the non-door bay ahead of the rear axle. There are two screws to remove underneath and the door lifts up. I prop the door up with a 3' piece of 2x4.
My leaks were around fittings on the PS side of the Aquahot, none on the heat exchanger.

n2zon · 04-01-2023, 07:12 AM

Quote:

Originally Posted by DFitz

On my 08 Bus, the basement heat exchanger is located in the same section as the black/grey/fresh tanks. On mine it's the non-door bay ahead of the rear axle. There are two screws to remove underneath and the door lifts up. I prop the door up with a 3' piece of 2x4.
My leaks were around fittings on the PS side of the Aquahot, none on the heat exchanger.

Thanks! I'll check there when it stops raining...

n2zon · 04-10-2023, 05:33 PM

Quote:

Originally Posted by DFitz

On my 08 Bus, the basement heat exchanger is located in the same section as the black/grey/fresh tanks. On mine it's the non-door bay ahead of the rear axle. There are two screws to remove underneath and the door lifts up. I prop the door up with a 3' piece of 2x4.
My leaks were around fittings on the PS side of the Aquahot, none on the heat exchanger.

Things got a bit busy but I finally got to this today. It was exactly where you said it was...and it's not leaking.

Thanks again.

DRM901 · 04-10-2023, 06:43 PM

Keep in mind some leaks only show up when hot. I had an engine radiator hose that only leaked when the fluid was at running temp.

Did you check everything when it is running?

n2zon · 04-10-2023, 08:18 PM

Quote:

Originally Posted by DRM901

Keep in mind some leaks only show up when hot. I had an engine radiator hose that only leaked when the fluid was at running temp.

Did you check everything when it is running?

I'm looking for evidence of leaking, not necessarily something still wet. Usually, you can see where something has leaked even if it's not leaking when you look. I'm not finding anything so far, but the thing I need to check next is the reservoir and its hose. Once it gets down to a particular level it seems to stay there, and there is no low-level fault displayed on the AH panel.