Toilet Flush Pump not working

[kev54]

Hi font-of-all-knowledge funsters. Toilet flush has decided not to work. 2013 Fiat Ducato-base Bessacarr E412.
Just embarking on first trip of the year to northern France and resting at Canterbury P+R before channel crossing tomorrow.
In the grand scheme of things, this is not disastrous in any way - a bottle of SolBio/water will do the biz.

However, I would be grateful for some experience/suggestions about the failure and possible resolution of this issue. It was working fine last October.

 

[Landy Andy]

Are you sure you have a “toilet flush”. Or are you just operating the vans water pump. If you are check the fuse that is on the locker where your toilet cassette is. Are you getting any lights on the toilet flush panel?

 

[kev54]

Thanks Landy Andy. No idea about that differentiation. Not aware of a fuse in the locker. No lights on the flush panel, but I don’t think I ever did. This is the situation. The only lights happen when the cassette is full - and we removed that mechanism 3 years ago because it kept getting disconnected during cleaning. The flush kept working until now. The lights in the bathroom dip slightly (we’re on leisure battery) when I press the button, but no action.
Have removed and re-set the cassette - no change

 

[royandsharont]

On my 2012 Bessacarr E640G I had a separate toilet water tank and therefore a separate flush pump. It was a transverse fixed toilet with a filled tank from outside just above the cassette. If this sounds like yours I’m sure it will be the same. To the left of the toilet seat as you look at it, by the flush button I seem to recall, there’s an oval flap which can be gingerly removed giving access to the actual flush tank. The small blue thetford pump is visible inside of there and connected with waterproof connection leads. You can reach inside and pull the pump up if you have a small hand.

Mine used to seize every winter when not used. I used to run it every month to try and avoid that but in the end it just seized and I’d have to release the impeller manually and lubricate it. It worked like this for 9 years then I couldn’t get it to go.

Also if I tried to get it working when seized I would sometimes blow the fuse which was inside the cassette compartment up the top so I’d have to change the fuse too. In the end I had to replace the pump before I sold the van.

If this sounds like yours I hope this info helps kev54

PS just seen your photo, the handle needs pulling off and then you can lift that flap

 

[kev54]

On my 2012 Bessacarr E640G I had a separate toilet water tank and therefore a separate flush pump. It was a transverse fixed toilet with a filled tank from outside just above the cassette. If this sounds like yours I’m sure it will be the same. To the left of the toilet seat as you look at it, by the flush button I seem to recall, there’s an oval flap which can be gingerly removed giving access to the actual flush tank. The small blue thetford pump is visible inside of there and connected with waterproof connection leads. You can reach inside and pull the pump up if you have a small hand.

Mine used to seize every winter when not used. I used to run it every month to try and avoid that but in the end it just seized and I’d have to release the impeller manually and lubricate it. It worked like this for 9 years then I couldn’t get it to go.

Also if I tried to get it working when seized I would sometimes blow the fuse which was inside the cassette compartment up the top so I’d have to change the fuse too. In the end I had to replace the pump before I sold the van.

If this sounds like yours I hope this info helps kev54

Thanks royandsharont that sounds very much likely! Yes transverse fixed toilet. Yes the flush is filled from outside above the cassette. Will have a poke about tomorrow - but your comments sound spot-on! Thank you

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[royandsharont]

kev54 Did you see the PS re the handle.

 

[kev54]

PS just seen your photo, the handle needs pulling off and then you can lift that flap

Wonderful! Thank you very much for that. Lots of fun ahead!