Hi All
I have recently installed a Honeywell CM927 to control my Vaillant Combi boiler. Few hours later my wife screamed from the bathroom as no hot water in the shower. After switching off & on the boiler, later on everything worked fine. A couple of days later, the same thing happened. No hot water and the boiler was playing silly. The boss (wife) did not want anything to do with controller. When I called a plumber he said this could be due to air in the radiators. I had to disconnect the controller until I understand what causes the hot water to switch off.
Is the problem caused by the boiler or the controller? and how to troubleshoot?
Thanks
Bashir
I have recently installed a Honeywell CM927 to control my Vaillant Combi boiler. Few hours later my wife screamed from the bathroom as no hot water in the shower. After switching off & on the boiler, later on everything worked fine. A couple of days later, the same thing happened. No hot water and the boiler was playing silly. The boss (wife) did not want anything to do with controller. When I called a plumber he said this could be due to air in the radiators. I had to disconnect the controller until I understand what causes the hot water to switch off.
Is the problem caused by the boiler or the controller? and how to troubleshoot?
Thanks
Bashir