Performa 30 HE, hot and cold showers

[Tony Cornwell]

Domestic appliance engineer by trade (no gas ticket) but trained monkey on central heating stuff. Shower is a pain in the harris, goes cold roughly once every minute unless I run (even a trickle) another hot tap and then it's fine. Central heating no problems....any ideas??

 

[Dunlopplumbing]

Just google for an answer, it's probably just a blocked plate heat exchanger, and you should find plenty of help on-line. Good luck.

 

[ShaunCorbs]

Flow issue / lack off

 

[Tony Cornwell]

Just google for an answer, it's probably just a blocked plate heat exchanger, and you should find plenty of help on-line. Good luck.

Is this something I'm allowed to do? More than competent but aware of Gas Safe limitations.

 

[oz-plumber]

Could also be the boiler hasn't been calibrated properly.
Maybe over gassed on the low side, causing boiler to overheat and shut down intermittently when hot water is running.
Is it only the shower or all taps - could be flow issue with shower head

 

[EvilDrPorkChop]

Is hot water same everywhere else or is it just the shower?

 

[Tony Cornwell]

Far as I know just the shower. Fitted a new mixer unit for the shower earlier this year (old one same prob but scaly) but didn't change the problem. Been doing it for ages now second tap on always cures the problem.