mary

OK thanks - next time I hear it I’ll go out and check! Another stupid question / if it’s the fan why would it be producing heat if I’ve only programmed it to heat water (no heating on)?

Thanks - not sure if it’s the fan running or just a noise to be honest - it just seems to happen randomly so maybe it’s the circulation thing. I’ll try a local a local geek! I’m in Sheffield so must someone around here

Sorry I mean I can hear the pump making a noise outside

OK I can check that information I just don’t understand why the pump is ‘pumping’ when I don’t have anything scheduled to be on

Thanks everyone - I’ll get some advice. It’s all just so different coming from a combi boiler set up !

Thanks I've turned off the cylinder immersion but can’t really see any difference One other thing I’m unsure about is that I can hear the air pump coming in sometimes randomly? Is this normal? For example, this morning when I got up at 7am the heat pump was going outside and meter showed 50p a hour. We only have only git hot water scheduled 4am for 30mins and no heating scheduled? The air pump stopped after a hour??

That’s all! yes it’s been serviced every year and we have all the docs I’ll try and few things - not even tried the heating yet so lord help me!! 😅

OK I’ve no idea what’s going on to be honest - we have got a smart meter and it randomly goes up when we aren’t doing anything different. For example, it keeps going from 0.15p a hour to 0:22p a hour without anything being turned on or off The instructions refer to controlling the secondary hot water loop which is optional but this isn’t on the controller so we don’t have that anyway I just don’t understand the immersion part to even check unless it’s the plug saying cylinder immersion? The instructions say the buffer tank is to prevent the pump from short cycling so not sure if that needs to be on (it’s a plug labelled buffer immersion)? this is probably a daft question but are there trades people who actually deal with helping getting the system set up to suit you?!

I’ve checked and it’s a NIBE 8kw F2040 so maybe 30mins a day isn’t enough to warm water to 45 each day and it’s using an immersion to keep warm as the shower is still hot now at 5pm and the water goes on at 4am?

Thanks everyone / I’m used to a combi boiler so this is a whole new world (of pain 😅)

This is where I have no clue about things likeCOP! I’ll check the manual and try to work it out Would it be safe to turn off both immersions to check?

Yes I thought about it but I’m a bit scared 😂🥴

Thanks all bit confused as PhilT seems to be think it’s OK but JohnMo seems to think 30mins won’t be enough to get it heated i have the instructions so I’ll try to work it out - I think there are 2 switches saying cylinder immersion and booster immersion / both are on The system was put in 8 yrs ago and previous owners didn’t really give us much information but they had a teenager so their usage would have differed I guess we have it set to 45 degrees and the Legionnaire thing is currently off which was done by last owner I guess

I know this is an old post but I have a related question. I have just moved to a house with a Nibe ASHP and it’s all very new. I am just concerned we are using it wrong as our leccy costs seems high. we have not used the heating part as yet. The hot water is scheduled on 4.30-5am on the lower tariff. We have never run out of hot water or had a lukewarm shower (usually shower at 5pm ish) Does this mean we are somehow re heating the water as I’ve read other post ls where people have to heat during the day to keep the temp? sorry for the basic questions but it’s all new! We are 2 people in a 3 bed house and use washer 3x a week and have 2 very quick showers a day!