Tecma Macerator toilet - back flow problem

[pflightnut]

What would cause some of the flushed water and ground up TP to flow back into the bowl about 5-10 seconds after the flush? And how do I repair it? Thanks for your help...

[pflightnut]

Question: What would cause some of the flushed water and ground up TP to flow back into the bowl about 5-10 seconds after the flush? Any suggestions on how to repair it? Thanks for your help... I'm learning one system at a time.

[US1]

Worn out Joker valves. They are a maintenance item. Very easy to replace. I can change the 4 in my boat in minutes. depends on access

[Old-Biscuit]

TECMA Toilet doesn't use 'duck bills' (joker valves)
Toilet bowl goes to inlet of macerator which then discharges into a Loop Drain line that connects to waste tank

Backflow from macerator to toilet bowl ----check inlet to macerator for obstruction



Service Manual
See pg 3 Fig C.1
See pg 18
https://www.entegracoachforum.com/in...a=media;in=256

[Old-Biscuit]

Asked/answered in your post from yesterday
https://www.irv2.com/forums/f54/tecm...ml#post6006741

[Knightadvent]

Originally Posted by pflightnut

What would cause some of the flushed water and ground up TP to flow back into the bowl about 5-10 seconds after the flush? And how do I repair it? Thanks for your help...

I am having the exact same issue. Did you ever determine the cause or fix? Thanks.