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Last seen: Dec 18, 2025
The system was installed as a 3 zone system with programable thermostats in each zone. The zones were set up by the installer to turn on and off with ...
I have now implemented the WC curve/line in HA that @TomC shared, but I'm not sure if the heat pump is running efficiently with this setup? I...
Unfortunately I don't really have any experience of trying to control the unit with minimal modbus. The only thing I used on Linux was mbpoll to initi...
Thanks very much Ian, I changed FSV 2091 to "Not Use" but it didn't have any effect. I then also changed FSV 2092 External Thermostat Application #2 (...
@iancalderbank I have come back to this a number of times but always thought I was doing something wrong. My system was initially set up to use Water ...
@kocta This is my configuration.yaml code which is very much based on the work of others here # Samsung Heat Pump Modbus Connection modbus: - name...
I came across this video which is an interesting example of heat pump control within Home Assistant
I have added the UI config and the YAML config of the script here. The main part is "modbus.write_register" and the payload associated with that. As...
@derek-m I only heat the water twice a day (at the moment it's to 50 degrees from 02-05:00 during the cheap night rate and to 42 degrees from 15:45-16...
@derek-m I am on a variable tariff so I'm turning heating and hot water off from 17-19:00 and upping the hot water set temperature from 2-5:00 I'm u...
I meant to credit Glyn Hudson for the hidden registers PDF which I found on his GitHub page
I had converted the Samsung Modbus MIM-B19N section on registers from PDF into Excel just to make it a bit easier to understand for myself. The sectio...
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The corrosion problem was never resolved. I filed a law...
By phowardstutterheim , 1 hour ago
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RE: Aerotherm 12+12kw cascade huge power utilisation
This is spot on. For all of MCS’s shortcomings, insta...
By Mars , 2 hours ago
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@cathoderay I agree the baseline set is tricky and I ha...
By Judith , 3 hours ago
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RE: Heat pump Surge protection
I’d love to get your input here @transparent… this is a...
By Mars , 3 hours ago
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RE: NIBE Heat Pump Warranty: What's an Adequate Engineer Attendance Time?
@hughmark, great to hear. Fingers crossed that it’s sor...
By Mars , 3 hours ago
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RE: Daikin high temperature heat pump
I’ll check in with Daikin to see if they can help answe...
By Mars , 3 hours ago
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RE: Samsung Gen 7 16kW Integrated unit Modbus monitoring
@johnnyb HI,I have an integrated unit with all componen...
By antonical , 5 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@papahuhu Ironical isn’t it? The last few days, the ‘Ag...
By Toodles , 7 hours ago
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RE: Setback savings - fact or fiction?
I answered that days back, I even provided a summary of...
By RobS , 7 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
I must say that this install is sounding more and more ...
By Mars , 11 hours ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Thanks, that’s a fair point and I agree th...
By Eliuccio , 1 day ago
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RE: The law of unintended consequences....
Oh Thank you Major, I was just beginning to wonder wher...
By Toodles , 2 days ago
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RE: Forum updates, announcements & issues
I know that the notifications are being delivered now w...
By Mars , 2 days ago
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RE: Advice needed after a successful "leftfield" experiment.....
@pauli I have sent a direct message with the financial ...
By ChandyKris , 2 days ago
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RE: Octopus Cosy 12 Heat Pump Regret: Incredibly Loud, Poor Heating & Constant Hum - Help!
Does it disappear when the heat pump is off? What abou...
By JamesPa , 3 days ago
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RE: Fitting heat pump plumbing and pipes in advance?
Great tips, thanks. The PEX/Al/PEX option sounds much m...
By Jonatan , 3 days ago
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RE: Struggling to get CoP above 3 with 6 kw Ecodan ASHP
Those control valves on the UFH manifold could be an is...
By Travellingwave , 3 days 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 , 3 days 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 , 3 days ago
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@batpred, you’re quite right; it does work well. I don’...
By Majordennisbloodnok , 3 days ago
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RE: Ecodan Cylinder Possible Weeping Around Thermostat Port
Update: Mitsubishi sent an engineer around. It was li...
By Gruff2001 , 3 days ago
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RE: A Smarter Smart Controller from Homely?
@benson Agreed. I believe the COP gains with homely, i...
By Papahuhu , 3 days 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 , 4 days ago

