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Last seen: Jun 10, 2026
With that drop its clear that very little hot water is getting from the primary into the secondary so either pump problem or piping problem. Has he p...
Really sorry to hear this, I was expecting no change not a deterioration and I must therefore eat humble pie following my comment that swapping a smal...
made of brass not plastic, proper square hole same shape as bleed screw. I did a quick search and they seem relatively rare, most seem to be a (pres...
Definitely. 8C DT is higher than the default design DT for most heat pump systems which is 5 This has the effect of reducing the average flow temp b...
Thats a great analysis and |I doubt any heat loss calculations adequately deal with this. Put another way there is an (probably) unaccounted for loss...
Thanks. I had forgotton that particular feature. I presume the call for heat switches secondary pumps on/off not the heat pump. All of this is goi...
Its the heat pump, more specifically the compressor, cycling on/off quickly. The most important parameter is the on time, anything less than about 1...
It will inevitably. If your heat pump capacity is perfectly matched to your house loss you can expect the heat pump to cycle from an OAT of roughly 1...
re 'enforced night mode running constant at 60%' are you saying that the heat pump was previously forced on (at 60% modulation) at night. If so thats...
With the expanded view you can see it ticking along at about 300W other than during the DHW reheat and between 4.30 and 5am. The spikes are very narr...
OK, couple more questions At these relatively mild temps, how certain can you be that its not just a WC setting problem that would be resolved by le...
Hmm The spikes are very short (so quite possibly very little energy and thus of little significance) but too low to be just the water pump....
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