Last seen: May 6, 2023
@allyfish thanks for that. ”This is well known for both Li-Ion and Ni-Cad batteries.” Wish it was. Nothing about charge rate vs temperature in any...
@iancalderbank It's an interesting problem and far from straightforward. The risk reward balance is massively skewed towards not undercharging as that...
@iancalderbank Time-based improved in a software update last year - the one where you could enter the unit costs for the different time periods. Bef...
sorry for any confusion - it was the only reference I could find to charging and temperature! I don’t think you are alone @dunlorn there are two peo...
@dunlorn sorry really don’t know, temperature was just speculation on my part. The way I think it works is that the battery sends info to the invert...
Yes our Mitsubishi let’s us control the heating and hot water separately. That said we probably won’t turn the heating off - it is controlled by a w...
@davesoa don’t blame you. we don’t have gas and were about to need a new boiler and a new oil tank so went the ASHP route. it’s a massive fail by ...
@dandee 😀 Installation was ok. It was the commissioning that was terrible!
Batteries controllers may limit their charging current when they are cold - this could be a factor depending on where your batteries are located. A ...
A bit more... Last summer we ran in self powered mode - once the heat pump isn't heating the battery is plenty big enough to keep us going from day ...
The Powerwall has two modes - Time based control and self powered. Self powered mode will only charge from the sun - in summer that may be the righ...
Our Heat Pump installation went smoothly - 14kW Zubadan ASHP, conversion of HW system to mains pressure, new 250L tank, 18 radiators replaced - took l...
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Heat Pump Dramas?
Thinking about installing a heat pump but unsure where to start? Already have one but it’s not performing as expected? Or are you locked in a frustrating dispute with an installer or manufacturer? We’re here to help.
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Latest Posts
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RE: Newbie out of her depth – Samsung AE120RXYDEG 12kW heat pump
@bami yes. 8kw = 8000w I would change the areas in th...
By bontwoody , 7 minutes ago
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RE: Towel rails. An unexpected final hurdle
I had a similar issue but convinced the installer to le...
By Pie_Eater , 50 minutes ago
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Cliff, welcome to the forum. You’re running into one ...
By Mars , 57 minutes ago
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RE: What is the best strategy for operating a very oversized heat pump?
This whole discussion highlights just how much of a mes...
By Mars , 1 hour ago
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RE: NIBE F2040 12 kW heat pump and 100 liter buffer tank
@cheshirejohn thanks for the update and for sharing. I’...
By Mars , 2 hours ago
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RE: Setback savings - fact or fiction?
Here's the same plot, less the R squared values, done q...
By cathodeRay , 4 hours ago
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RE: SolarPV tables / online calculator
We've only had our solar since last June, but so far fo...
By Old_Scientist , 4 hours ago
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@robs useful thread! Thanks for sharing - Octopus are c...
By big_si , 4 hours ago
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?
@jamespa Agreed. I think it’s a case of much over muchn...
By Mars , 6 hours ago
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@eliuccio Unfortunately, whilst I agree with a lot of...
By JamesPa , 7 hours ago
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RE: Samsung Gen 7 R290 12kW is not behaving how I expected
Definitely its in the 20xx FSVs. Conversely it may be...
By JamesPa , 8 hours ago
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RE: Heat Pump Sizing & Installation Costs
Perhaps useful to have installed date too? To get conte...
By Tim441 , 12 hours ago
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RE: F.788 Building circuit pump reports internal fault - Vaillant Arotherm
Guess I have to wait for engineer visit. I really hope ...
By jeegnesh , 1 day ago
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RE: Act now to defer the UK road tax increase on EVs
@majordennisbloodnok Damn right sir. my attempt at iron...
By Jancold , 1 day ago
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RE: ASHP and heating issues in new build house
That’s good gives you more capacity. It made me think, ...
By Terry1812 , 1 day ago
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RE: Seewet manhole cover within r290 exclusion zone
Thanks! I asked Vaillant, and they say I should be fi...
By dbrb2 , 1 day ago
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Looking for the Grant Aerona 3 setting to turn off completely at 20 OAT
I'm running my Aerona 3 on WC and the 'warm end of that...
By damonc , 1 day ago
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RE: Do I just go with the lowest quote for my heat pump?
So after signing in Sept in two weeks the install may s...
By Jancold , 1 day ago
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RE: Victorian Semi Retrofit / Extension ASHP and UFH Advice
When you are renovating is always a good time, as it ma...
By JamesPa , 2 days ago
Latest Topics
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By cliffhanger 1 hour ago
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Heat Pump Sizing & Installation Costs
By Mars 14 hours ago
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Volumisers in Heat Pump Systems: Does Placement Matter?
By Mars 15 hours ago
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SolarPV tables / online calculator
By MichelleC 22 hours ago