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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: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
Balancing is a long process and its possible to mess th...
By JamesPa , 14 minutes ago
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RE: Daikin Altherma 3 LT compressor longevity question
Up to a point yes. However every heat pump (and every ...
By JamesPa , 1 hour ago
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Thanks everyone for the help, Havenwise now diasbled. q...
By Boycey , 3 hours ago
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RE: Advice needed after a successful "leftfield" experiment.....
@pauli Depending on whether you can get an EV tariff, I...
By ChandyKris , 4 hours ago
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RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences
Is that a single pair only? If so it may be part if th...
By JamesPa , 6 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@technogeek I think you are correct, but, it didn’t inf...
By Papahuhu , 6 hours ago
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@batpred, you’re quite right; it does work well. I don’...
By Majordennisbloodnok , 7 hours ago
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@Mars at the time of writing heating oil is £1.28 / ltr...
By TechnoGeek , 7 hours ago
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RE: Ecodan Cylinder Possible Weeping Around Thermostat Port
Update: Mitsubishi sent an engineer around. It was li...
By Gruff2001 , 10 hours ago
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RE: A Smarter Smart Controller from Homely?
@benson Agreed. I believe the COP gains with homely, i...
By Papahuhu , 10 hours ago
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RE: Samsung Gen 7 16kW Integrated unit Modbus monitoring
The setup for this is a Samsung Modbus card. Connected ...
By antonical , 11 hours ago
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RE: Forum updates, announcements & issues
@davidalgarve, if the emails are more than roughly a mo...
By Mars , 12 hours ago
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How to Find All Your Posts and Topics on the Forum – A Quick Guide
If you’ve ever posted something on the forum and then s...
By Mars , 12 hours ago
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RE: If a heat pump can only heat DHW to 50C then what? Issue with 18KW Heliotherm heat pump
Sorry to hear that but I'm not surprised TBH. Stratifi...
By JamesPa , 13 hours ago
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RE: Say hello and introduce yourself
@pt151 welcome to the forums, and looking forward to he...
By Mars , 1 day ago
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RE: Setback savings - fact or fiction?
The answer was in two parts in my reply, the second par...
By RobS , 1 day ago
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Samsung Gen 7 16kW Integrated unit Modbus monitoring
Looking for some assistance to get modbus monitoring wo...
By antonical , 1 day ago
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Ecodan control return to Melpump from Havenwise trial. settings check
Hi, Just got control back after being on the hav...
By Boycey , 1 day ago
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RE: Refrigerant R32, is it now banned in the EU from 1st Jan 2027 for monobloc ASHPs?
I wonder if heat pump manufacturers will tone these sit...
By JamesPa , 1 day ago
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RE: Who’s Caved and Switched the Heating On Already?
@editor yesterday we used 12kW of electricity for heat,...
By Judith , 1 day ago
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RE: Rate the quality of your heat pump design and installation
Loss assessments can be a very serious case of GIGO. I...
By JamesPa , 1 day ago
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RE: Who's your electricity provider and what's your tariff?
@jamespa Just bizarre. This is our data. I really don't...
By antonical , 2 days ago
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RE: Mitsubishi Ecodan 11.2kW review
I think you said its an 11.2kW model and your house is ...
By JamesPa , 2 days ago

