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Subject Topic: Thetford C250 CWE toilet repair Post Reply Post New Topic
Message posted by snagz17/4/2011 at 2:36pm
Outfit:  sold van so looking for a nice tent     Location:  Wiltshire
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We drained the system properly, to the letter as per instructions when we wintered our van, but when we used it first time this season, I filled the flush tank and it promptly emptied itself straight away!!it seems the design of the toilet means a little water is held in the pump over winter and freezes, breaking it.In our case it had popped the bottom of the pump off.
Luckily I was able to superglue it back together which seems to have worked. Otherwise it's a 35 replacement.
When I had it apart, I noticed the feed pipe to the pump is held by a spring clip, so when we winter it at the end of this season, I will be emptying it from that pipe as well as the main drain tube.
I think that will cure this problem as it allows you to drain the pump too.
I'm hoping my findings will help others who have had this problem or will alert them to the possible design flaw.

Message posted by rushallmanor17/4/2011 at 3:44pm
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This is a known problem and my dealer replaced it under warranty.

Message posted by snagz17/4/2011 at 8:36pm
Outfit:  sold van so looking for a nice tent     Location:  Wiltshire
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Quote: Originally posted by rushallmanor on 17/4/2011
This is a known problem and my dealer replaced it under warranty.


as I have seen while trawling the forums, maybe thetford should add something to their instructions to allow peeps to drain down thoroughly.
(or maybe not, they're probably making a killing on replacement pumps!! LOL)

Message posted by Pickled Onion17/4/2011 at 9:58pm
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Quote: Originally posted by snagz on 17/4/2011

(or maybe not, they're probably making a killing on replacement pumps!! LOL)

There may well be more than a modicum of truth there snags, however its never good for a manufacturer to get a reputation for unreliability and I believe they have admitted that by giving out free upgraded replacements. My feeling is that new designs aren't thought through enough before being released on to the market and that we tend to do in-the-field testing for them.

Dave.


Message posted by littlebasher17/4/2011 at 11:31pm
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My pump had cracked in exactly the same place

A quick call to Thetford and they sent me a replacement in the post FOC

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Message posted by geoff+emmy18/4/2011 at 8:41am
Outfit:  swift conqueror 645+jeep commander     Location:  Huddersfield
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Mine did the same

 I got the full, watering can two shots of pink stuff filled it only to watch it drain on my feet

I complained/moaned about it on swiftalk and i got a reply from thetford saying if i rang their customer services with model number/,s/n and code number (they are under cassette at the front) they would replace with their new modified pump f.o.c their phone number is customer sevice 0114 273 8157


Message posted by winnieone23/6/2011 at 7:12pm
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My pump also suffered in the big freeze, even though properly drained. But I only found out early this week on our first time out this year. Luckily, if you can call it luck, it dripped rather than poured out, and I managed to empty the tank.I took the toilet out and found the problem straight away.

when at home today I searched the Thetford site for the product but could not find it. Instead googled C 250 CWE and it brought up this forum. phoned the number given by geoff+emmy and Thetford are sending me a pump, no charge, great service..They did ask for my caravan vin code, so have that handy if your phoning. The caravan is about a year and a half old. Thetford told me their products are guaranteed 3 years. Thanks for the number, thought it was going to cost me a packet.


Message posted by michael23/6/2011 at 10:47pm
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is it this one/click on

 

135 Submersible Pump for all Thetford 12V Toilets



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the only silly question is the one you do not ask.

Message posted by Pickled Onion16/7/2011 at 11:24am
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I thought that I had been lucky enough to avoid any frost damage last winter but it must have weakened it sufficiently to fail last week whilst on holiday in France.  I managed to bodge it with silicone sealant to get bye till we got home. I phoned Thetford in Sheffield after we got back, they were very helpful and said I was due a free replacement. As the van was going into dealer to have a replacement centre window yesterday, they fitted it at the same time and all is well again.

Strange that frost damage reared its ugly head so long after the event, so keep an eye out for pink stuff leaking when you go to empty your thunderbox!

Dave


Message posted by mked17/7/2011 at 1:28am
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I use my van all year round but when it is not being used in winter I put car radiator anti- freeze in the toilet flush tank.  It doesn't need any in the system when the van is in use as the heat in the van stops the tank getting too cold.

It doesn't cost much as it's only used when the van isn't being used and it isn't necessary to use a high concentration to protect the system.

Mind,the flushing water is a funny colour!

Regards

Kev



-------------
Regards Kev.

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Message posted by michael17/7/2011 at 5:21pm
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i asked in 2008 and this was there reply.

Thank you for your e-mail.

Any antifreeze used should be non acidic and non corrosive. Generally any non toxic anti freeze that is mono propylene glycol based should be ok. If using anti freeze please adhere to the manufacturers instructions at all times.

Please refer to your Thetford Users Manual with regards to using the toilet in the winter. Please be aware that Thetford accept no responsibility for damage caused by any anti freeze products.

Kind regards,

Thetford Customer Care.



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the only silly question is the one you do not ask.

Message posted by Terry Dadd0105/11/2017 at 9:55pm
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Hi. Where having problems too with the thetford 250 cwe flush button, sticking and flushing till empty. I've taken the fuse out now. But I don't know how to get to the switch to replace it. The button is blue on a silver background pad if that helps. Could you tell me how I get to the switch please. Thanks

Message posted by G7ACU05/11/2017 at 10:11pm
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Quote: Originally posted by Terry Dadd01 on 05/11/2017
... But I don't know how to get to the switch to replace it. The button is blue on a silver background pad if that helps...


This fault is often caused by condensation from the flush tank, damaging the switch board. Access is easy enough by carefully peeling off the silver pad (this is basically a thin membrane sticker) to reveal the button/control board. On some models the board is simply clipped into the top of the tank, but on most there will be a few obvious screws you remove, then lift out the board. Carefully pull off the edge connectors then refit a replacement board, which you'll get at any decent accessory shop. Carefully replace the bezel sticker to finish, or you can even replace that too if you prefer.


-------------
Paul

Every day's a school day!


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