Worcester 28 CDI water goes 5 second hot and 5 second cold

[surman]

Hi

I have got a problem and i don't know how to solve. Water is 5-10 second hot and than it goes cold for about 5-10 seconds and than go back to hot again and goes like that...

I would appreciate if anyone can help.

Thanks Surman

 

[corgiman]

blocked water 2 water heat exchanger



the primary side is either blocked or partially vlocked and this is causing the boiler to overheat and shut down then cool fire up overheat etc etc

and this means sparodic hot water

 

[surman]

Thanks Corgiman, much appreciated.

Surman

 

[corgiman]

Thanks Corgiman, much appreciated.

Surman

no problems

Good luck with it