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Last seen: Aug 8, 2026
Welcome to the forums. If the thermostat shows it’s calling for heat but that circuit isn’t warming up, an airlock could definitely be the culprit, ...
From what you describe, it sounds like you’ve done a solid job troubleshooting so far, especially replacing the motorised valve and experimenting with...
I was supposed to write/comment about this last year, because I was in touch with all major manufacturers towards the end of last year regarding weath...
@mairia, I'm staggered that NAPIT have not been in touch yet. Absolutely ridiculous! Please keep me updated on 'progress'. I'm really looking forwar...
We have three rads at the start of the heating circuit that get the bulk of the hot water. I've 'throttled' the FRVs down to 0.5 litre/minute. Even wi...
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Degrees of Separation
Latest Posts
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Does minimum system volume matter in the context of sim...
By Tony.Stolz , 3 hours ago
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RE: Electricity price predictions
yes, same with the IOG tariff which is even a bit harde...
By Batpred , 4 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
I had a quick look and they are a little vague. They ...
By BlizzardGreen , 5 hours ago
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RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 13 hours ago
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 24 hours ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 1 day ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 1 day ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
One of the other mods has just reminded me that @ashp-b...
By Majordennisbloodnok , 1 day ago
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RE: PV and battery long payback - sense check query
@old_scientist I have now drafted 2 replies - both have...
By DavidB , 3 days ago
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RE: Air source heat pump roll call – what heat pump brand and model do you have?
Forum Handle: adrian Manufacturer: Appliandirect.co....
By Adrian , 4 days ago
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RE: Acond heat pump failed after four years - diagnostic quote £940 plus VAT
@downfield Thank you Downfield. This sounds potenti...
By Mia , 4 days ago
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