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Subject Topic: Thetford reed switch Post Reply Post New Topic
PersonMick Dundee
08/10/2011 at 7:47pm
 Location: Surrey
 Outfit: Swift Signature 16 2 View Mick Dundee's Profile View Profile   Reply to Mick Dundee Reply   Quote Mick Dundee Quote  
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Hi this afternoon i have dismantled my Thetford 200 CWE toilet. This was to see if i could find the pump as the toilet does not flush i found it after dismantling the whole thing.
I connected pump to 12v and it worked,so not that.
On the exploded diagram it shows a battery compartment in line with reed switch.I have not come across the battery compartment.Do they all have them?
The 12v feed is good to the connector.
My question is could the Reed switch be at fault and can i bypass it?

Mick


PersonG7ACU
08/10/2011 at 9:41pm
 Location: West Mids
 Outfit: Swift Ace Statesman & X-Trail 2.0 View G7ACU's Profile View Profile   Reply to G7ACU Reply   Quote G7ACU Quote  
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Are you refering to item no's 22 and 23 in the drawing?
This reed switch is for the level indicator of the cassette tank only and has no bearing on the flush of the toilet. The Reed switch is activated by a float within the cassette and it's this which causes the red 'tank-full' lamp to come on.

There should be a blade fuse that protects the pump and the common cause for pump failure is generally either the fuse blown or corrosion of the fuse holder. In extreme cases the pump can fail (but you've proven this is ok) or the membrane switch that activates the pump.

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Paul

Every day's a school day!


PersonMick Dundee
08/10/2011 at 10:37pm
 Location: Surrey
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Hi Paul

Yes 22 and 23 in the drawings

I know the fuse is ok but it might be corroded also do you know about the battery pack?

Mick


Personmichael
08/10/2011 at 10:57pm
 Location: Lancashire
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http://www.campingrus.co.uk/Thetford-C-200-CW-/-CWE-Spares

the battery pack should be visible on the inside of the opening (left) where the toilet cassette is located and removed.if not there it is possible it could be wired direct to the caravan wires as later one were.



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


Personbirdman101
09/10/2011 at 9:33am
 Location: Milton Keynes
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Have you checked the switch pos 34 under the push button at top of tank.My neibours packed up earlier this year and when i repaired it for him i found the rubber cover that should protect it from water had come off and the switch had corroded.Renewed switch and replaced cover putting silicon sealer round and a cable tie so it cant come off again.


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PersonG7ACU
09/10/2011 at 11:51am
 Location: West Mids
 Outfit: Swift Ace Statesman & X-Trail 2.0 View G7ACU's Profile View Profile   Reply to G7ACU Reply   Quote G7ACU Quote  
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Hi Mick.

The others have beaten me to it. Batteries as per Michael's response (supply could be hardwired in as it only powers the top tank full lamp as explained) or the top switch as I'd already mentioned too and also covered by Birdman.

As you've measured voltage, I assume you've a suitable meter to use so just check out for supply at switch (once you've checked the fuse holder) as there really isn't much else in the equation for a non-working flush.

Let us know how you get on.

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

Every day's a school day!


PersonMick Dundee
09/10/2011 at 3:57pm
 Location: Surrey
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Thanks all

Repaired it this morning corroded wire at switch replaced that.
All working now i now know the toilet inside out

Mick


Personmichael
09/10/2011 at 5:18pm
 Location: Lancashire
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well done

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


PersonG7ACU
09/10/2011 at 6:51pm
 Location: West Mids
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Ditto

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Paul

Every day's a school day!



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