no hot water to loft en-suite basin

[magico]

hi all i have a problem with my en-suite (situated in loft)basin mixer tap. i just cant seem to get hot water....the boiler doesn`t kick in when tap turned....thats what happens when i turn on any other hot tap in house.
could it be the tap?
i have a combi boiler and its set on economy.
if i run hot tap in family bathroom then run the hot tap in en-suite i get about 3 seconds of hot water then it go`s cold again.
any help please

 

[picasso]

what boiler do you have, ?

 

[magico]

a worcester junior 24i

 

[picasso]

bit of a guess here, these have a flow turbine and a filter, you may not be getting the minimum flow necessary to trigger the boiler, try cleaning the filter and see if it helps.

 

[bengasman]

Check the isolation valve to see if it is fully open.

 

[magico]

just thought i forgot to say its a a single lever basin tap....and when i put it on cold its the same pressure as when i turn it to hot. the cold feed also supplies the toilet and shower which don`t suffer from low pressure.....thus making me wonder whether its the tap. can i strip this type of tap and clean it?cant see a way of taking the handle off though

 

[kirkgas]

can you measure the flow rate at the hot tap, roughly done by counting how many 1 ltr jugs it fills in a minute, very rough i know but will help, then check with other taps to see if you are getting enough water flowing from the tap to activate the boiler

 

[magico]

sorry do you mean other taps around house?kitchen and family bathroom.
i can obviously tell you now that its a hell of a lot slower than the other hot taps in the house.
maybe i have the wrong type of tap as i`ve just been on ebay and seen a similar tap what says not suitable for low pressure....
but i cant understand why the rate of flow from hot or cold doesn`t differ.

 

[bengasman]

...maybe i have the wrong type of tap as i`ve just been on ebay and seen a similar tap what says not suitable for low pressure....

You don't have low pressure.

 

[magico]

meant low pressure to the en-suite

 

[picasso]

on the end of the tap is a small filter, unscrew it and clean it out.

 

[bengasman]

meant low pressure to the en-suite

Not there either

 

[sooey]

Have you got a twisted flexi tap connector?

 

[magico]

picasso....now i feel like a right numpty. was full of junk even what looked like a tiny twig....tap running perfect now.
sorry guys.
thanks for the help
mark

 

[kevplumb]

meant low pressure to the en-suite

Not there either

oooh somebodys in a pedantic mood this morning