@SarahH Many thanx for all your help and checks and clear answers to my questions, highly appreciated!
@SteveSpanners I get the aspect of turning off certain functions while learning to control this water law. But my question is, specifically for the DHW turning off bit, won’t I risk giving my familiy cold showers? Water output for heating is about 30 degrees it seems, water for DHW is 45. I’m afraid that by turning it off, the showers will be cold as max temp for the water will be around 30-ish degrees while I’m experimenting on the water law settings.
Concerning legionella, I’ve found the same post that @Timbones found. I’m sticking to 60°C as that seems te be a public consensus (even with the differtent installer manuals). Thnx Tim for linking anyway!
@MikeJH Thanx for your help. I’ve tried to change the setting from water outlet to indoor but immediatly after I received the error code E121. Any idea what this means or what I need to do to resolve this?
On top of that, my water outlet just started skyrocketing to almost 42 degrees (pump going full monty-1.5KWH energy use) even though my set temp of 21 is achieved (it says it’s 25.5 degrees indoor). When using the water outlet option (previous setting - samsung standard) I kept the water around 30ish degrees and the house was plenty warm. EDIT: water outlet dropped to 29°C 10mins later. 27 20 mins later. When I check ‘operations’ in the options to see what bits are working or not, there’s nothing ‘on’. Only thing that is showing is ‘Eco 4/5’. Is this normal? Jezus this HP is giving me stress like no other machine in the house.
I think that this occasionally occurs when you change standard temperature, but I think it can be ignored or you may have to power the controller off and back on again to fix it.
However it looks as you are now using the indoor temperature mode
But I cannot explain the rise in water outlet temperature and the rise in indoor temperature well above your set room temperature. Very strange!
If your water outlet temperature of 30ish degrees was keeping the home warm, then you need to reduce your 202* high target down to 35-40C when in indoor temperature mode. You should see very good efficiency. The Eco setting value is meaningless. Just ignore it.
Hi Emanuel, I run the same Samsung set up 6kw+200L indoor. Change water law to 25-35 of flow temperature at outside temperatures +14 to -15. This works best to me so far. And we had -10 this week. All open system of underfloor heating A++ house.
This isn’t quite correct, but I struggled with this for a while too. To be able to adjust the WL -5/+5 from the home screen you need to set the mode to Auto instead of Heat. This can be set in the schedule or on the home screen (I think).
As others have suggested, it sounds like you need to lower your WL settings, especially if your house is getting up to 25 degrees.
I would also suggest setting 2093 to 1, this seems to settle my heatpump and allows it to get to it’s minimum electricity draw much more readily. Although my testing hasn’t been extensive. When i had 2093 set to 3, it wouldn’t drop below 800W of electricity draw even when it was 13 degrees outside. With 2093 set to 1 it drops to 340W.
E121 comes up when you change the temperature mode. You can ignore this.
In water outlet mode, you are overriding WL and setting a flow temperature. This is only useful if using automation or a 3rd party controller (like Homely) to control the flow temperature.
@jakeymd1 That’s very interesting and not something that I have come across before. Have you managed to set the mode to Auto on your own Samsung? If so, can you post a photo of what the screen looks like and what you can adjust (indoor temperature and WL+/-5C presumably). Also what steps did you follow to select Auto? I have tried - in heating mode press OK and select mode with arrows - but auto is greyed out and unavailable.
I can actually alter WL +/-5C via my phone or laptop as I have an ESP32 connected to F1 and F2, which extracts data from the ASHP and displays it in a web page. However, the ability to adjust WL +/-5C while using the wired remote controller’s thermostat would be useful for other users.
Hi Mike, I have set mine to Auto, but I’ll have to double check when I get home tonight whether it can be set on the home screen. I usually set it in the schedule to come on as auto instead of heat.
My system is “AUTO” and “WATER LAW”. The system is ON all the time and there are no additional sensors. I spent quite a while getting the WL correct, and now it maintains an inside temp of 20 degrees. I can adjust the set +/- 5 degrees, but I have only done this over Christmas when we were cooking more and had more people in the house, when I turned it down a couple of degrees.
The indoor temp on the display is higher than 20 degrees because the wired remote controller (with internal sensor) is in the plant cupboard which is hotter than the rest of the house.
There is a setting somewhere that says whether the heat pump is working in heating or heating&cooling. I wonder if that has something to do with it. I just can’t remember where it is.
In service mode there is a setting called “Indoor Zone Options” and there is another setting “Standar Temperature”.
This can be either “Indoor” or “Water outlet”. In indoor you can set only target roomstat temperature. E.g. 22C. The pump starts heating at 22C and stop at 23C. Then it waits until it drops back to 22C to start heating again. So hysteresis 1C.
What is bad on this settings is that there is no possibility to change water law offset.
In “Water outlet” there you have two possibilities - to set flow temperature (weather compensation is then not used) or you can set water law offset by +/- 5C. Then your temperature curve is moved in this direction at given outside temperature.
What is bad here that you can’t set target room temperature how it is in indoor mode.
What I wonder is that if in this “Water law” offset mode there is still a previously set target temperature in place or when the pump turn on and turn off. This is a mystery for me in case you have no possibility to set target temperature in this mode. How thermostat knows when to stop heating ?
I would like to have a mode loke water law when I can offset my water law curve in case of need and at the same time possiblity to set target room temperature so it still works like a thermostat.
