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Hi there, I've recently replaced my old mechanical dial type central heating thermostat with a Honeywell CM907 programmalble one. All appeared to be working fine until my wife noticed that the heating would kick in (thermostat would click, pump run, boiler on, usual stuff) and then within...

Hi there, some assistance and expertise is required. I have a standard open central heating system which up until recently has been pretty well behaved. Now I having to regularly bleed the same 3 radiators due to the ingress of air into the system. Coupled with this the small feed /...