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Resolved Dometic Macerator Control Board

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DennisT

RVF Expert
Joined
Dec 1, 2022
Messages
963
RV Year
2022
RV Make
Newmar
RV Model
Superstar 4061
RV Length
41
Chassis
FCCC
Engine
Cummins 360
TOW/TOAD
2022 Jeep Cherokee TrailHawk
Fulltimer
Yes
Well, it appears the control board on our macerator has failed.

Similar to older postings there is a delay when flushing.

Bad part is, the fill valve has also stuck open so water has to stay off unless controlled etc to keep from having other issues.

Even unplugging the control cable from the back of the toilet the valve is still open allowing the toilet to continuously fill when water on.

The good news is Newmar emergency number call yesterday called me back writhing a few minutes. Nothing they could do since Dometic is not available on the weekends. They thought it may be the anti siphon until I mentioned the flush delay. They agreed it is probably the control board.

Will keep you all posted as things progress.
 
Edited for correct component, price, and pic.

Update on this one….

Pulled toilet away from the wall to try and get the fill valve to close.

While behind there I tapped on the vacuum breaker that is above the fill valve.

Appears that was stuck since everything is working normally again. Flush delay is gone and no longer continually filling.

Now to pull and clean or replace the vacuum breaker….

Much better than a part for $600 - $800

Vacuum breaker is about $50.

Pic attached

IMG_1016.jpeg
 
Last edited:

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