Last seen: Dec 10, 2025
In this case, it uses the NASA protocol rather than modbus, but the register addresses are the same as far as I know. This is what it looks like on my...
I spoke to Homely about doing that, but he said that I would need to be a qualified electrician to become an approved installer. I have since installe...
@ashp-bobba Thanks very much for your detailed reply. That is really helpful. In situations where the flow rate can deliver heat at a DT of 5 C or les...
I suppose that might be true at a stretch if you were doing space heating throughout the summer, but who does that? I would dig your heels in until yo...
@ashp-bobba Welcome to the forum. I would be interested to understand the reasoning behind your statements. What was your experimental set up? I would...
Can you explain the mechanism for this effect? Could it just be coincidental rather than causal? System volume may prevent short cycling, but there ar...
With your 2091/2092 settings, the heat pump will only cycle off if your 3rd party thermostat is no longer calling for heat. If your home is warm, t...
Those settings exclude frequent cycling as the cause of poor efficiency. With 2091/2092 set to 'Use(Signal only ON/OFF)', FSV 2093 is inactive, so it ...
@raiph I apologise for my incorrect assumption. A PWM pump should maintain your delta T, so I am not clear why you are experiencing problems with a lo...
@raiph You seem to want a Delta T of 5, but your water pump has a fixed speed / flow rate which is currently 15 l/min. Your heat output is determined ...
@dinhp I will try and upload an audio file as it is difficult to describe how it sounds. The noise level will vary depending on how hard the heat pump...
@dinhp Thanks for the extra info. Your COP of 2.49 for today is not great if OAT is 9C, although it was probably colder overnight. Does this include a...
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RE: GSHP WOES! Midland based engineer recommendations?
@johnbroome perhaps, does it rise in pressure when heat...
By ASHP-BOBBA , 11 minutes ago
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RE: Ecodan Pump Issues… Circulation pump turns off when heat pump compressor turns off
can you see here it not like a set of steps every 20 mi...
By ASHP-BOBBA , 13 minutes ago
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So I hear the export MPAN that UKPN assigned should be ...
By Batpred , 2 hours ago
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RE: Recommended home battery inverters + regulatory matters - help requested
From what I read, the Solis has a very long list of err...
By Batpred , 2 hours ago
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RE: Ideal HP290 14kW ASHP - how to optimise
Roughly this should cost you £250-£300 per peak month a...
By ASHP-BOBBA , 3 hours ago
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RE: Installer Fitted 9kW Instead of 11kW Heat Pump and Changed MCS Paperwork - What do I do?
@jamespa thank you again. I know using the offset to tr...
By MairiA , 4 hours ago
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RE: New Daikin 11kW Altherma 3M install - is it working as it should?
@toodles Thank you for your input. As the days have got...
By Synthbuilder , 6 hours ago
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RE: Advice for a novice on Mitsubishi Ecodan 6kW
Frost Protect/Freeze Stat is an operation mode, where D...
By F1p , 7 hours ago
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RE: Fan unit Making terrible noise HELP!!
@gutoffowc Oh no, sorry to hear that, are you in the Ke...
By ASHP-BOBBA , 8 hours ago
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RE: Sunsynk Whole House Backup Issue
@sheriff-fatman - could you please re-post that in the ...
By Transparent , 9 hours ago
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RE: Running my new Nibe ASHP efficiently
I didn't. I spent a while manually messing around with ...
By jamieheatpumpnew , 11 hours ago
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RE: I’m glad the cold spell is over!
I comparison with the 65kWh used above yesterday was on...
By Judith , 11 hours ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
I should think so, I thought that pretty much universal...
By JamesPa , 12 hours ago
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RE: Setback savings - fact or fiction?
I'm also inclined to look into how a defrost is actuall...
By cathodeRay , 12 hours ago
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MLCP (Multi-Layer Composite Pipe) for ASHP
@editor nope. The info you reported was sufficient for ...
By iotum , 22 hours ago
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RE: Experience - New Build / Complete New Heating System
@vincro I would be surprised if it is much above 5 to 6...
By ASHP-BOBBA , 23 hours ago
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RE: Post-Traumatic Heat Pump Stress Disorder
Yes bang on and maybe I can illustrate that by way of e...
By iotum , 1 day ago
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