Water pump running won't turn off.

[PORKSTER]

As title water pump running just fired up on its own. But is pushing water into wc.
Luckily I found this before bowl overfilled.

I have turned pump off on panel for time being any ideas
Thanks

 

[Landy Andy]

Flush button on toilet failed.

 

[Two on Tour]

Sounds like a switch or valve problem on your loo.

What loo do you have ?

 

[glenn2926]

Thermal drain actuated ?

 

[pappajohn]

Tap Micro switch stuck closed if it's a microswitch system or micro switch in pump jammed

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[PORKSTER]

Hi again its a thetford loo taking flush water from main tank.

Now I've looked and the relay was showing signs of corrosion. Unplug it pump Dosnt run.
Son im assuming its relay. As I replaced this some years back. I went to Halfrauds and thought I matched it but the new one. Dosnt do anything.
So I know need to find a partnumber as to get correct part

 

[Two on Tour]

Hi again its a thetford loo taking flush water from main tank.

Now I've looked and the relay was showing signs of corrosion. Unplug it pump Dosnt run.
Son im assuming its relay. As I replaced this some years back. I went to Halfrauds and thought I matched it but the new one. Dosnt do anything.
So I know need to find a partnumber as to get correct part

If it's an automotive type relay, the blade terminals are usually numbered next to each terminal and some also have a schematic of the relay circuit.
Might be worth having a look to see if the terminal layout is the same for the new and the old relay.

 

[PORKSTER]

Pretty sure I messed up tbh

 

[jockaneezer]

What van is this in, I thought you had a Burstner Delfin ?

 

[PORKSTER]

What van is this in, I thought you had a Burstner Delfin

yes I do I found what halfords part number I need now.

Thanks to search function on here. As I wrote about it last time.
For those interested it's HEF 554.

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