potterton combi 80

[shellb]

Hi ya,

Any body knows why my potterton combi 80 locks out when I turn on a hot tap ? I also get banging a and a strange gurgling noise for a few seconds then it locks out , pressure seems ok, Heating some times locks out when on for a long time. already Bled air from system .... any ideas

regards

Shell

 

[ChrisR]

Sticking hot water flow switch. Search will find plenty...