Vokera Linea switched on every half hour + cold tap

[Russ649]

Hi,

I have a Vokera Linea combi boiler.

Every half hour or so it fires up for about 30 seconds.

Also, it fires up when I turn the cold tap on!

Ideas appreciated.

Thanks.

Russ

 

[ChrisR]

Also, it fires up when I turn the cold tap on!

That would be the general idea?


Does it have a keep-hot mode to reduce hot water delay?

 

[Russ649]

Hi Chris,

I don't think the boiler should fire up when I turn the COLD tap on, like just to fill the kettle ..

I'm not aware it has a keep hot mode but good idea, I will check..

Thanks,

Russ

 

[kevplumb]

I don't think the boiler should fire up when I turn the COLD tap on, like just to fill the kettle ..

could be a dead leg in the pipework

 

[East Kent Coastal]

If it's just a Linea, pre-heat can't be turned off. If a Linea HE then the pre-heat will only work when in Winter mode.

 

[Russ649]

Thanks All,

I just read the manual and like GeeGas says, there is a pre-heat mode that can't be switched off. Seems like a big waste of gas to me.

Still not sure why it fires up every time I run the cold tap though ..

Cheers.

 

[nickso]

If it's just a Linea, pre-heat can't be turned off. If a Linea HE then the pre-heat will only work when in Winter mode.

pre-heat certainly can be turned off on the linea 24-28 and 7 series. remove one of the main board jumpers.....jp9 off the top of my head.

 

[nickso]

.

Still not sure why it fires up every time I run the cold tap though ..

Cheers.

kevplumb told you the possible reason.

 

[Russ649]

Hi,

I there were a dead leg, how would this be causing the boiler to fire up when I turn a cold water tap on ?

Many Thanks,

Russ

 

[Russ649]

pre-heat certainly can be turned off on the linea 24-28 and 7 series. remove one of the main board jumpers.....jp9 off the top of my head.

Thanks, will look into this.

Russ

 

[kevplumb]

Hi,

I there were a dead leg, how would this be causing the boiler to fire up when I turn a cold water tap on ?

Many Thanks,

Russ

if its full of air it fools the boiler into thinking the hot water is being ran

 

[Russ649]

Thanks Chaps.

Just removed JP6 from main PCB. Should stop the pre-heat.

Will check for air..

Cheers,

Russ

 

[Paul Barker]

most common dead leg is to old airing cupboard.

Boiler isn't firing it just starts pump, probably doesn't even start fan. SO noise is the only inconvenience.

 

[Russ649]

Hmmm. Will check, thanks