Vaillent Boiler VCW T3W - no hot water

[kerrybriggs]

Hello,

I have a combi vaillent Boiler VCW T3W. When the central heating is off I get hot water downstairs but none upstairs.

When the central heating is on I get hot water upstairs but none downstairs.

Any ideas?

Thanks a lot

 

[corgiman]

EH?

Gawd knows that sounds very very wierd

 

[Agile]

That does not sound possible as the boiler does not know where its supplying water to!

Its not the 1st of April is it?

Why not call a competent engineer and tell us what the problem was?

Tony

 

[kerrybriggs]

No its not the 1st April but its driving me mad.

We moved in a year ago and have been using the immerson heater to get hot water upstairs, however just discovered that we do have hot water upstairs when the central heating in on.

However with that finding came the one where we do not get hot water from the taps downstairs when the central heating is on but its ok when the heating is off.

Will call an engineer and update.

 

[namsag]

You must have 2 circuits for HW to be using immersion heater as your boiler is a combi . Sounds like you have 2 seperate faults

 

[Agile]

Right, now we have an idea of your system!

Your boiler is not responding to a demand for DHW to the downstairs so the flow diaphragm may be damaged.

The upstairs water is evidently supplied from a cylinder and the motor valve supplying this is apparently failed.

I wonder what you are going to do now? I have to say that as you seem to have little appreciation of how your system worked I doubt that you will have much chance of fixing these two faults!

Better to call a competent heating engineer!

Tony

 

[kerrybriggs]

Thanks for your advice.

I do not need to use the immersion to get hot water upstairs, as long as the heating is on I get hot water upstairs. When the heating is off I don't.

Will get an engineer to look at it.

K