Hi all, new here so first posting.
I had a completely new central heating system fitted 15 months ago. Every time combi boiler cuts in (but only when towel rail and radiators set to provide heat) I get 20 or 30 ticks over less than 5 minutes till boiler cuts out when sufficient heat provided. If I am downstairs, the ticks sound like they come from downstairs, if I am upstairs, they sound like from upstairs. They are metallic clicks. The installing plumber has been back twice but can't solve it. Any ideas, please? Not a problem in summer months when system only provides hot water to taps.
I had a completely new central heating system fitted 15 months ago. Every time combi boiler cuts in (but only when towel rail and radiators set to provide heat) I get 20 or 30 ticks over less than 5 minutes till boiler cuts out when sufficient heat provided. If I am downstairs, the ticks sound like they come from downstairs, if I am upstairs, they sound like from upstairs. They are metallic clicks. The installing plumber has been back twice but can't solve it. Any ideas, please? Not a problem in summer months when system only provides hot water to taps.