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The pump has kicked back in twice since I powered it down earlier. Both times as it has kicked in there has been a tiny dimming of the lights. Barely noticeable, but enough to tell me the pump is back on. Sure enough, when I go to check it has fired up again. Looks like I'd better call the...

It's a Grant Aerona HPAW85, full user manual available as a pdf here: http://www.grantuk.com/downloads/Grant-Air-Source-Heat-Pump-manual-DOC87-Rev05-January-2011.pdf I've been playing around a bit tonight and here's what happened. Came in and light on meter was blinking at 2 times a...

There is indeed. The stat is currently set to 40deg. Just had a look and the pump only outputs 8.73kW. Is that low for a 4 bed house, albeit a well insulated one?

Thanks for the reply. It's an air to wet system, which I probably should have mentioned, so going to some big radiators in all the rooms and underfloor heating in the bathrooms. The heating has been on constantly for the past few weeks (glad I'm not paying the bill) and the house feels warm...

Hi there, I'm due to start renting a new build house this week and have been allowed in for the past few days so we can move our stuff in. It's a four bedroom detached house with an air source heat pump system, which I have absolutely no prior knowledge of whatsoever. There's also solar for...