hymer B524 (2003) flush not working

[n8ess]

My toilet has stopped flushing, just a dribble. I can here the pump in the main tank working and the taps have plenty of pressure. Has anyone had a similar experience and knows how to resolve this?

Thanks

 

[LithiumConvert]

What lights do you have on the control?

Before and after pressing the flush button?

 

[n8ess]

What lights do you have on the control?

Just the red light which indicates when the cassette is full. My flush button is separate from the toilet, it is in the cabinet beside the toilet. I was wondering if it could be an air lock but it is difficult to get access to view the pipework.

 

[LithiumConvert]

Should there not be one green light to indicate power is on?

Usually lights after pressing the flush button. (although on some new Hymers on all the time)

I assume the red is not on at the moment.

So does that mean you have no lights on (before or after)?

 

[ChrisL]

It could be calcium deposits blocking the flush nozzle, try running a pipe cleaner soaked in vinegar through it, that worked on mine.

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[TUCANO]

In a 2006 B584 that l once owned there was a separate pump under the toilet. I had to dismantle the toilet to replace the pump.

 

[n8ess]

It could be calcium deposits blocking the flush nozzle, try running a pipe cleaner soaked in vinegar through it, that worked on mine.

I have a slight dribble, I will give it a go with a pipe cleaner, any what the nozzle size is?

 

[n8ess]

In a 2006 B584 that l once owned there was a separate pump under the toilet. I had to dismantle the toilet to replace the pump.

I think mine operates solely from the pump in the tank as I can here it whirring when I press the button, the taps are fine, which make me think that the pump is working as it should.

 

[ChrisL]

any what the nozzle size is?

I think I used a 3mm pipe cleaner first then a 6mm one. I bought a few different sizes on a key ring from ebay and used a little one first and then a bigger one.

 

[monzer]

If I've had the hot water on I get more pressure out of it. Other times it sometimes reduces to a dribble but usually enough to flush.

Does the water not even have enough pressure to go round the bowl?

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[n8ess]

If I've had the hot water on I get more pressure out of it. Other times it sometimes reduces to a dribble but usually enough to flush.

Does the water not even have enough pressure to go round the bowl?

No, it barely makes it around the rim. Why would it be better when you have the hot water on? Surely the water is drawn from the main tank?

 

[monzer]

No, it barely makes it around the rim. Why would it be better when you have the hot water on? Surely the water is drawn from the main tank?

Yeah I'm sure it is but it definitely makes a difference. I guess some heat must be getting to the pipes and building a bit of pressure.

 

[Lenny HB]

It will be the solenoid failed a common problem, it may just be gummed up with calcium you could try taking it out and running vinegar through it. they are easy enough to replace.

 

[scotjimland]

Have you had a new pump fitted recently ?

Reason I ask, if it's been wired wrong polarity it will still work but with a limited flow .. may not be noticeable at the taps.. but it will affect the toilet flush.. as you described. ..

Hymer 12v cable colours
Brown = Negative
Blue = Positive.

The Reich pump cable:
Brown = positive
Blue = negative.

 

[TUCANO]

My mistake, thanks to Lenny for jogging my memory, it was the solenoid that failed on a previous van of mine, l replaced it.
God, my memory, where have l put it.

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[n8ess]

Just a quick update on the issue. It was indeed the solenoid valve, there is a filter on the valve that was completely blocked with limescale & gunk. Rinsed out with some citric acid solution and it is flushing like niagara falls

l have done the tanks and flushed the system with citric acid at the same time for good measure. l have took it for a slosh round and thinking of leaving it in overnight? I assume this will not cause any damage to the boiler?

 

[Lenny HB]

Just a quick update on the issue. It was indeed the solenoid valve, there is a filter on the valve that was completely blocked with limescale & gunk. Rinsed out with some citric acid solution and it is flushing like niagara falls

l have done the tanks and flushed the system with citric acid at the same time for good measure. l have took it for a slosh round and thinking of leaving it in overnight? I assume this will not cause any damage to the boiler?

Don't leave citric acid in the boiler it will eat it, OK for an hour while descaling it then flush throughly.

 

[scotjimland]

l have done the tanks and flushed the system with citric acid at the same time for good measure. l have took it for a slosh round and thinking of leaving it in overnight? I assume this will not cause any damage to the boiler?

Re Descaling, this is the advice I received from Truma

Dear Mr Allan

The solution we recommend for descaling is 2 litres of white wine vinegar diluted into 10/12 litres of fresh water, introduce via the water system and then leave to work for about 4 to 5 hours and then flush through. We would not recommend using citric acid in the heater.

If you require any further assistance do not hesitate to contact us.

Kind Regards

Nicky Price
Customer Service Administrator

Tel: 01283 586020
Fax: 01283 586029
Address: Park Lane, Dove Valley, South Derbyshire, DE65 5BG

 

[Lenny HB]

Re Descaling, this is the advice I received from Truma

Dear Mr Allan

The solution we recommend for descaling is 2 litres of white wine vinegar diluted into 10/12 litres of fresh water, introduce via the water system and then leave to work for about 4 to 5 hours and then flush through. We would not recommend using citric acid in the heater.

If you require any further assistance do not hesitate to contact us.

Kind Regards

Nicky Price
Customer Service Administrator

Tel: 01283 586020
Fax: 01283 586029
Address: Park Lane, Dove Valley, South Derbyshire, DE65 5BG

I always use white wine vinigar as that is what Truma used to recommend in their instructions until they brought out their own descale.
Even vinigar will eat stainless steel if left in contact too long.

 

[Figaro]

Is white wine vinigar the same as distilled white vinigar ?