Recent content by bogenbroom

Thanks ChrisR, I'll check the wiring best I can but nothing has been changed since first installed - could it have been setup to run hw all the time?

I would be grateful for any advice on this before I contact a local heating engineer. I have a Baxi Bermuda 51/5 back boiler, room thermostat and Honeywell ST6400C programmer and I believe it is a fully pumped sytem. The problem is that with everything in the off position the pump is...