Hi, I wondered if anyone had any advice for this problem. Our boiler has worked fine for the last couple of years. However for the last 3 days, when the heating goes off at night, the pump carries on running. The boiler itself is off - there's a display showing the water temp, and the temperature drops over time (about an hour after the heating turned off, the display showed 45C), plus the green light showing when the boiler is on, is off. Previously, once the heating was off, the pump turned off. But now it runs for at least 3 hours (after that I fell asleep, so I don't know if it ever stopped!).
Any ideas why this would be, and/or how I can work out what the problem is? The boiler feeds hot water, heating and underfloor heating. The underfloor heating can trigger the boiler, as can the timer for heating/hot water (there is a wireless room thermostat). However when the pump is running at night, both the main timer (heating/hot water) & the underfloor timer are off, and all the pipes under the boiler are cool to the touch. It's a worcester greenstar boiler.
I'm not aware anything has changed, but we've got builders in - they aren't doing anything with the heating or water, but it means the electricity has been off a few times, although I don't see how that could have affected anything.
Thanks!!
Any ideas why this would be, and/or how I can work out what the problem is? The boiler feeds hot water, heating and underfloor heating. The underfloor heating can trigger the boiler, as can the timer for heating/hot water (there is a wireless room thermostat). However when the pump is running at night, both the main timer (heating/hot water) & the underfloor timer are off, and all the pipes under the boiler are cool to the touch. It's a worcester greenstar boiler.
I'm not aware anything has changed, but we've got builders in - they aren't doing anything with the heating or water, but it means the electricity has been off a few times, although I don't see how that could have affected anything.
Thanks!!
