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Last seen: Aug 5, 2026
@editor thank you for moving this thread, I was getting concerned it was way off topic and needed to move 🙂 @jamespa From the symptoms descri...
@iantelescope After seeing your system and hopefully have understood it correctly, if I was in your position then I would consider the followin...
@iantelescope unfortunately your last post does not really answer my question. If you do not know the exact configuration that is understandable. Ho...
@iantelescope I am trying to put a picture together of how your heat pump, 2x PWM water pumps, heat exchange, buffer tank and radiators are connected ...
@iantelescope I follow what you are saying however the issue is the Samsung controller is only capable of controlling one PWM pump not two. That means...
@iantelescope there is no embarrassing questions! Pulse Width Modulation (PWM) pumps are a special kind of water pump that has a control signal t...
@mike-h sadly due to installation and system design (bivalent system) constraints I have had to use an external thermostat which has the (#2091/#2092)...
@iantelescope I briefly switched my system on yesterday to give you some comparison figures. In this warm weather my system ran for 2 cycles of 5 mins...
@mike-h I cannot speak for other Samsung models but I have a Samsung Gen 6 controller connected to a 12Kw HT Quiet. Standing in my plant room observin...
@iantelescope with the set up you have and like mine, the thermostat will cycle up to 3 times an hour. I do not believe this is an issue and potential...
@iantelescope Unfortunately the electrical interface on the Samsung is only binary for external thermostats. These are terminals B22 (WL1) and B24 (WL...
@iantelescope To be honest you are fairly limited with a binary ("on" / "off") thermostat and I actually think this model is good for what it do...
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Latest Posts
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
Thanks for sharing that. Your objective seems very sen...
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Very nice. Ours was the opposite, about 10%...
By Papahuhu , 3 hours ago
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RE: Adding additional Solar Panels to a DC coupled battery system
A couple more points about placing solar panels at low ...
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv definitely a larger inverter will help and m...
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
Agree with Major. And even if I was very happy with ...
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
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RE: To re-pipe or not to re-pipe? Moving from oil boiler to air source heat pump.
@penval, really useful update. After all the discussion...
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RE: Who's your electricity provider and what's your tariff?
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RE: New Vaillant Arotherm controls link to existing thermostats ; wired vs wireless
Nothing attached! I have rads but UFH makes the case ...
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