Last seen: Jul 25, 2025
@skyecraig I've had our FTC7 wireless thermostat lose connection to the controller a few times, does yours display 3 in the top right where the temp...
@trebor12345 I'm pretty sure Viessmann use an energy integral algorithm like Vaillant, so what we are seeing is that at a near constant outside temp...
@heatgeak It's good to talk about mild temperatures and heat pumps, they don't get discussed very often. It's a 8kW unit. It does prove that ...
As both Vaillants do DHW but the Samsung doesn't, you'd expect the daily mean COP of the Vaillants to be less. Also the first Vaillant does a defrost ...
@gary We've got the FTC7, maybe older controllers didn't have that setting? It's under Operational Settings on the FTC7.
See my post- it's called summer mode and is in the service menu.
Mitsubishi has a separate setting, like Samsung, to turn the heat pump off above an outside temperature. And turn the heat pump on below an outside te...
It's from:/p> Suggest you use the menu (top right) and download the PDF - it's a big document as it has all of Mitsubishi's air to water heat pumps....
A few comments that might be helpful. As James mentioned, usually the biggest source of over estimating heat loss is the ventilation rate (air chan...
Unfortunately for your argument the best performing Daikin on heatpumpmonitor is the one owned by matt-drummer and from how he explained his control s...
There have been several people on the OpenEnergyMonitor forums who have persuaded Octopus to replace their 9kW or 11kW Daikin with a smaller 6kW or 8k...
@heatgeek Sorry if I miss attributed that. Yes, the same CH flow rate is maintained at all OATs. Here's the same heat pump running at lower OATs: ...
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Delighted to hear this went well. It looks very neat ...
By JamesPa , 27 minutes ago
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RE: No-code, plug-and-play monitoring for your heat pump
The issue with the Grant is that you have to wire direc...
By Grantmethestrength , 4 hours ago
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RE: Is this just haze or something more?
I am not a scientist nor a meteorologist and I know the...
By Toodles , 4 hours ago
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RE: Benefits of an extra horizontal loop for GSHP
It will improve performance, but by how much depends on...
By Brendon Uys , 9 hours ago
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RE: The good, the bad and the not that great β my heat pump installation
Said I would pop back with a update. Only Mr Jesus h...
By Burtis , 23 hours ago
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RE: Buffers, hot water and cooling
Thats presumably heat pump DT, what about radiator DT a...
By JamesPa , 24 hours ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Exactly the same here. We now have 13.5kWh ...
By Old_Scientist , 1 day ago
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Compressor and Evaporator Stratification
I have had a few issues with my Hitachi spilt heatpump ...
By trebor12345 , 1 day ago
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RE: Wood burner with ASHP - direct air?
This depends on the size of your wood burner and size/t...
By Lucia , 2 days ago
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RE: Difficult positioning of air source heat pump
@rikiarn It's a not a buffer it's a volumiser which is ...
By Lucia , 2 days ago
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RE: Is your heat pump insured?
To make things clear, lots of insurance companies cover...
By Lucia , 2 days ago
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RE: Boxt Heat Pump Installation Experience
@adrian any updates since installation? How is it perfo...
By Ashfp , 2 days ago
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RE: Say hello and introduce yourself
Hi @seatonian - Yes, I know Seaton, and I have the Nat...
By Transparent , 3 days ago
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@seatonian got your email. Will connect you with a reco...
By Mars , 4 days ago
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@downfield and @toddles, this isnβt in the settings cur...
By Mars , 6 days ago
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RE: Homely launched for Grant Aerona ASHP control
I haven't bought the Aerona Smart Controller (Β£700!) bu...
By Prunus , 6 days ago
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RE: Antifreeze top up for my heat pump - is this a rip off?
For the record, Grant supply ethylene glycol for their ...
By Prunus , 6 days ago
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RE: Compressor attempts start but fails - Nibe Fighter 2005 8kW
@skyefarmer amazing. Well done!
By Mars , 6 days ago
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RE: Air source heat pump roll call β what heat pump brand and model do you have?
Ebac 5kw - Monobloc R32. Developed and made in UK - Mit...
By marcinwloch69@gmail.com , 1 week ago
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RE: Is a Valliant Inline 6kW heater a BUS buster?
Just another thought - it might be worth thinking about...
By JamesPa , 1 week ago