Frost protection valve (3 Viewers)

[ELIZAMAE]

Hello, I want to ask this question please. I’ve a HYMER Swing 544 2002. The water is draining from both sinks out through a pipe under the washroom instead of via the grey waste pipe. After much reading I gather it’s connected with a frost protection device on my Truma B10 boiler. The EHU was disconnected a few weeks ago and then this began happening. I’m totally at a loss to find this device. I know all about , just can’t find it on my vehicle.

 

[denisejoe]

It will be above where the water is coming from.

 

[rb62]

Sounds like your frost protection valve is one of the older type that needs a 12v supply to keep it closed. What state are the habitation batteries in if the van has not been on EHU ?
You are looking for this which will be close to the boiler and as said above where the water is coming out.

 

[Reallyretired]

If it is grey water draining it has nothing to do with the frost protection valve which releases fresh water. Some hymers have a second drain valve, mine is under a lift up panel in the cupboard under the sink, Make sure its closed if you can find it.

 

[Lenny HB]

As said nothing to do with the dump valve.
Sounds like you have a pipe that is broken or disconnected from the grey waste tank.