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Last seen: Aug 5, 2026
@iantelescope you cannot sort your control system out until you have sorted your hydraulic issues out and you are happy that it is running as efficien...
@jamespa You are absolutely correct and my point exactly. By using the correctly configured heat pump weather compensation you can match the h...
@iantelescope the honeywell thermostat was initially designed to control fossil fuel boilers but is compatible with heatpumps. If has the following ...
@derek-m @iantelescope You are almost correct. Option 2, the water pump is switched on and off by the room thermostat but continues running for 1...
@iantelescope I think Samsung intended this option to save energy however this should never be used especially when trying to achieve a continously ...
@iantelescope This #2091 option information is straight out of the Samsung user manual (which your installer should have left you a copy). I can cop...
@derek-m by applying 240v to the thermostat input terminal (which the honeywell does) then depending on which mode is selected in the Samsung controll...
postid="31563"] Disadvantages: The Thermostat minimum cycle time of twenty minutes, with a PWM Run time of between 3 and 8 minutes, the Grundfoss ...
As I have mentioned in a previous post, if you are in mode 3 field option #4091 if I remember correcly, you can increase the run time of the compresso...
@iantelescope I have managed to find a little wifi where I am. If you have the ability to isolate the buffer tank why not try this first? As @derek-...
@iantelescope Given the performance of your past installers, what are the reasons for concluding the PWM section of the Samsung board is faulty? ...
@derek-m I appreciate what you are saying and in an ideal world it would be best to remove everything and start again however I get the impression tha...
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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...
By JamesPa , 1 hour ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@toodles Very nice. Ours was the opposite, about 10%...
By Papahuhu , 2 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 ...
By Transparent , 3 hours ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@kilgorexv definitely a larger inverter will help and m...
By AndrewJ , 1 day ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 1 day ago
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RE: Surface mount or bury primaries for heat pump installation?
The installation is almost done! I've written up two ...
By tomasmcguinness , 2 days ago
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RE: Glass lined Cylinder for private water supply
This has turned into a fascinating little rabbit hole. ...
By Mars , 2 days ago
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RE: Switch suitable to change between two inverter CT's
Last winter my battery ,32KWh, could run the house com...
By Jancold , 2 days ago
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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 ...
By Batpred , 2 days ago
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RE: Is the "divide by 2900" rule still valid?
There is another estimator that you could use, a formul...
By Rob of York , 2 days ago
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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...
By Mars , 4 days ago
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RE: Who's your electricity provider and what's your tariff?
@papahuhu I prefer to look at it simplistically. We d...
By Old_Scientist , 5 days ago
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RE: Questions about A2A for heating as well as cooling
@rob-of-york I would concur with the underfloor insulat...
By Toodles , 6 days ago
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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 ...
By JamesPa , 6 days ago



