PDA

View Full Version : Camper toilet Thetford C200 CS d3



muletopia
18th December 2012, 08:39 PM
We recently puchased a camper with a Thetford C200 CS D3 toilet fitted.
I have checked that 12 volt power of the correct polarity reaches the toilet and that pressurised water is at the start of the flush tube of the toilet.
When the "flush" button is pressed you can hear the toilet valve throw (or a soilenoid if that is what they have) But no flushing happens.
Can anyone throw light on this?
Cheers
Muletopia

Nisshead
18th December 2012, 08:51 PM
Is this the system that uses the main water tank and pump for flushing?

Some systems have a flow restrictor in the tube to reduce the pressure of the water(if the pump flow is too high). Check for a restrictor in the tube or in one of the connectors or a t-piece...just a thought.

AB
18th December 2012, 08:52 PM
If you don't get much response here mate I would check out the diagram below for anything that could go wrong....

i.e Electric Valve, etc....Did you check the fuse (part number 21766)

http://www.thetford.com/Portals/0/images/parts/parts_cassette_c200_s-cs.gif
http://www.thetford.com/Portals/0/images/parts/parts_cassette_c200_s-cs.gif

PARTS LIST
Key No. Part No. Description
1 23706 Seat & Cover White
2 N/A
3 16833 Vacuum breaker
4 23709 Electric Valve
5 23710 Flush tube White
6 23713 Valve blade handle Moon gray
7 23714 Reed switch White
8 21766 Fuse 3 amp
9 23718 Warning LED
10 23716 Flush switch
11 21333 Seal cover
12 23726 Float arm
13 33361 Lip Seal (Post-6/15/00)
14 07524 Vent button Yellow
15 33209 Holding tank complete Moon gray
16 25128 Seal automatic vent
17 23788 Automatic vent Moon gray
18 33333 Cap & Spout seal
19 N/A
20 33203 Sliding cover Moon gray
21 25810 Measuring cup Yellow

muletopia
18th December 2012, 09:28 PM
If you don't get much response here mate I would check out the diagram below for anything that could go wrong....

i.e Electric Valve, etc....Did you check the fuse (part number 21766)

http://www.thetford.com/Portals/0/images/parts/parts_cassette_c200_s-cs.gif
http://www.thetford.com/Portals/0/images/parts/parts_cassette_c200_s-cs.gif

PARTS LIST
Key No. Part No. Description
1 23706 Seat & Cover White
2 N/A
3 16833 Vacuum breaker
4 23709 Electric Valve
5 23710 Flush tube White
6 23713 Valve blade handle Moon gray
7 23714 Reed switch White
8 21766 Fuse 3 amp
9 23718 Warning LED
10 23716 Flush switch
11 21333 Seal cover
12 23726 Float arm
13 33361 Lip Seal (Post-6/15/00)
14 07524 Vent button Yellow
15 33209 Holding tank complete Moon gray
16 25128 Seal automatic vent
17 23788 Automatic vent Moon gray
18 33333 Cap & Spout seal
19 N/A
20 33203 Sliding cover Moon gray
21 25810 Measuring cup Yellow

Many thanks AB
I thought that I had checked the fuse, but when I put a multi meter on it it was revealed to be blown. This does not surprise me much as when I first started looking I did not hear the valve throw. I looked at the wiring diagram and as supplied the polarity of the 12 (15) volt supply was reversed, fixed that then I could hear the valve throw.
So next time I go into town I will acquire a new fuse (at least one!).
Cheers
Muletopia

muletopia
18th December 2012, 09:36 PM
Is this the system that uses the main water tank and pump for flushing?

Some systems have a flow restrictor in the tube to reduce the pressure of the water(if the pump flow is too high). Check for a restrictor in the tube or in one of the connectors or a t-piece...just a thought.

Ta Nisshead,
The suggestion of fuse by AB seems at least possible, will try that first
Cheers
Muletopia

Nisshead
18th December 2012, 09:45 PM
Yeah go the fuse,

Another possibility is an air lock so if you ever get this you could pour some water into number 3 vaccume breaker (I think) and try again as that should get it pumping again

muletopia
19th December 2012, 08:30 PM
Thanks AB,
Replacing the fuse after fixing the wiring did the trick.
Cheers
Muletopia