Help! No hot water in kitchen... Ok elsewhere??

[Jakey786]

Hi I have a combi boiler which til now has worked great. The problem I have at the moment is there is no hot water coming from mixer tap in the kitchen. Although I have hot water in bathroom upstairs and also downstairs toilet sink. Have a feeling the pressure may not be enough to trigger the boiler to heat the water, tho there hasn't been too significant drop in the pressure. Having been reading that it may perhaps be the diverter valve diaphragm that needs replacing?? Have increased flow to mains to full and cleaned washers etc on mixer tap! Any advice would be most welcome

 

[Derek Hardman]

If the other taps fire the boiler up, then the issue has to be with the tap?

 

[Jakey786]

Hi Derek, thanks for ur reply. I can only assume then that the pressure isn't sufficient to trigger the heating switch from the boiler... But I've increased it to full and had a look at the mixer tap to ensure it opens to full (only quarter turn).

Any further advice??

 

[jam1979]

it could be worth while getting a new cartridge for the tap

 

[jam1979]

it wont be the diverter valve if u still get hot water to all other draw offs

 

[Derek Hardman]

I would probably replace the cartridge as said in last post, or replace the taps.

 

[Resolute]

Do you have a service valve under the tap? If so, disconnect the hot and then using a flexi and a bucket open the service valve and see if it triggers the boiler.

If so then you need a new cartridge/tap.

 

[Jakey786]

Do you have a service valve under the tap? If so, disconnect the hot and then using a flexi and a bucket open the service valve and see if it triggers the boiler.

If so then you need a new cartridge/tap.

Clever... Will try that tomorrow!




Thank you!

 

[Jakey786]

Hi all... Well couldn't get access to the service pipes properly so bought replacement cartdridges and after replacing the old ones found the same problem!

Any other ideas please?

 

[Mike Jackson]

Could be a split diaphragm in the diverter. Will actuate when the flow is good but if the flow is restricted at the kitchen tap it may not be enough to operate the micro switch.

 

[Jakey786]

Could be a split diaphragm in the diverter. Will actuate when the flow is good but if the flow is restricted at the kitchen tap it may not be enough to operate the micro switch.

Hi Mike thanks for ur reply. Is there an easy way to check the state of the diaphragm ... Is it something a novice can do?? Any instructions would be great .. Thanks

 

[Mike Jackson]

Unfortunately no. You need a gas safe registered engineer to look at the boiler. Perhaps book a service visit and mention the problem you are having.

 

[Dotty]

Not really a job for a novice. Also, depending on what boiler you have, you would also be breaking the law by removing the case.

You need a gsr in to look at your boiler. We cannot and will not give advice on the installation or repair of boilers for your own safety.

Please go to Gas Safe Register | Ensure your gas engineer is registered. or post a thread in the 'I'm looking for a plumber / gas engineer' section of these forums remembering to include your location. [DLMURL="http://www.ukplumbersforums.co.uk/im-looking-plumber-gas-engineer/"]I'm looking for a Plumber or Gas Engineer[/DLMURL]