This has turned out to be a faulty circuit board in the gas boiler which as now been replaced and it appears to be working ok, (at least till I submit this)
Hi The boiler is a standard gas boiler, not condensing or combi, about 7 years old on a three port valve for heating and water. There are thermostatic valves on all radiators and more than one is open fully. The boiler is located in the kitchen. My initial suspicion was a stuck valve but it seems to...
Hi The gas central heating system does not always switch off. The electronic timer switches the heating off but the central heating pump still runs and the gas boiler cycles on and off. the wall thermostat has no effect. At the moment this is happening at night (uncomfortable sleep) but can happen i...
