Geyserwise - Power element and pump separately

greg_SA

greg_SA

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Hi,

I am looking into how to power my Geyserwise for a pumped system, using my inverter. The idea is to run the geyserwise all the time, on my inverter essentials circuit, because it needs the pump to circulate water through the collector. But I'd only like heating via the element when I have excess solar (via the Aux Load port on a Deye/Sunsynk inverter).

So, I was hoping to use the element output of the Geyserwise to switch a contactor/relay that is powered via the Inverters Aux Load port, when I have excess solar. So the Geyserwise will potentially be trying to power the element, but it will only switch power when there is excess solar.

I believe that this might cause the Geyserwise to give an E4 error (Heating Loss)? As the Geyserwise is expecting the water to heat (when there might not be any excess solar power).

Is it possible to disable or change the settings regarding the E4 error?

Not sure if you can access those types of settings via TUYA controller?

Thanks,
Greg
 
Thanks - I'll look into that.

I found someone that has tried my initial approach, of powering the element with a relay, and he does get the E4 error. That requires the power to the GeyerWise to be power cycled. So not ideal.

So another way to do it would be to keep the "program timers" on the GeyserWise all off, then have a routine to check (using Tuya on the GeyserWise) to check the temperature at certain times, and then enable the "boost" option to turn on the element. Just have to ensure that you switch it off again if "element power" is lost.

In general I am trying to avoid complicated programming and scripting via systems like HA, etc. The routiens in google home, etc. are very limited. Is there a cloud based system that I can use to for e.g. check the temperature and switch something accordingly?
 
The Geyserwise ECO controller will achieve what you need

Their ECO kit is well worth the money. You'll need to add 2 PV panels and an STC dual voltager geyser element to achieve maximum saving

Did this in 2021 and its working 100%. No mains electricity needed, except for the display
 
greg_SA said:
Thanks - I'll look into that.

I found someone that has tried my initial approach, of powering the element with a relay, and he does get the E4 error. That requires the power to the GeyerWise to be power cycled. So not ideal.

So another way to do it would be to keep the "program timers" on the GeyserWise all off, then have a routine to check (using Tuya on the GeyserWise) to check the temperature at certain times, and then enable the "boost" option to turn on the element. Just have to ensure that you switch it off again if "element power" is lost.

In general I am trying to avoid complicated programming and scripting via systems like HA, etc. The routiens in google home, etc. are very limited. Is there a cloud based system that I can use to for e.g. check the temperature and switch something accordingly?
Click to expand...
I use a very simple approach with my Geyserwise Tse system. I have an extensive PV system with virtually 100% off grid capacity. The geyserwise device is linked to my tuya app (Smart Life app). With the Tuya/Smart Life app I used 2 configurations. No 1 worked Ok but I prefer to use No 2 as it gives me better temperature control.
No 1: set up 3 scenes as follows: a) when local weather changes to Sunny, set block 2 temp to 65. Ditto for block 3 b) when local weather changes to Rainy, set block 2&3 temp to 50. When cludy, set block temp to 55.
only 1 timer is set in geyserwise 09:00 to 15:00 to ensure sunshine conditions.
Config No2: i set up several temperature scenes in Smart Life/tuya app for the geyser. For instance, when geyserwise temp > 65 then set geyserwise power to off and send notification. Another is when geyserwise temp < 65 then do the following : set block 2&3 (max) temp to 70, set geyserwise power on, send notification. This scene executes between 09:00 and 15:00 everybday. In addition I have duplicated these 2 scenes with 2 more temperature settings, 55 and 50 deg C. All together therefore 6 scenes. Then I created 3 weather scenes, Sunny, cloudy and rainy. Thus, when weather changes to Sunny, disable 50 and 55 deg scenes, enable the two 65 deg scenes. In this way i can control the temp to within 2 deg C during daylight hours.
 
greg_SA said:
Thanks - I'll look into that.

I found someone that has tried my initial approach, of powering the element with a relay, and he does get the E4 error. That requires the power to the GeyerWise to be power cycled. So not ideal.

So another way to do it would be to keep the "program timers" on the GeyserWise all off, then have a routine to check (using Tuya on the GeyserWise) to check the temperature at certain times, and then enable the "boost" option to turn on the element. Just have to ensure that you switch it off again if "element power" is lost.

In general I am trying to avoid complicated programming and scripting via systems like HA, etc. The routiens in google home, etc. are very limited. Is there a cloud based system that I can use to for e.g. check the temperature and switch something accordingly?
Click to expand...
Why are you avoiding HA? If I were you I'd give it a go, you might be surprised how useful (and easy) it is.
 
Islay said:
I use a very simple approach with my Geyserwise Tse system. I have an extensive PV system with virtually 100% off grid capacity. The geyserwise device is linked to my tuya app (Smart Life app). With the Tuya/Smart Life app I used 2 configurations. No 1 worked Ok but I prefer to use No 2 as it gives me better temperature control.
No 1: set up 3 scenes as follows: a) when local weather changes to Sunny, set block 2 temp to 65. Ditto for block 3 b) when local weather changes to Rainy, set block 2&3 temp to 50. When cludy, set block temp to 55.
only 1 timer is set in geyserwise 09:00 to 15:00 to ensure sunshine conditions.
Config No2: i set up several temperature scenes in Smart Life/tuya app for the geyser. For instance, when geyserwise temp > 65 then set geyserwise power to off and send notification. Another is when geyserwise temp < 65 then do the following : set block 2&3 (max) temp to 70, set geyserwise power on, send notification. This scene executes between 09:00 and 15:00 everybday. In addition I have duplicated these 2 scenes with 2 more temperature settings, 55 and 50 deg C. All together therefore 6 scenes. Then I created 3 weather scenes, Sunny, cloudy and rainy. Thus, when weather changes to Sunny, disable 50 and 55 deg scenes, enable the two 65 deg scenes. In this way i can control the temp to within 2 deg C during daylight hours.
Click to expand...
Thanks! I'm keen to get the Tuya PCB for my Geyserwise.
 
Speedster said:
Why are you avoiding HA? If I were you I'd give it a go, you might be surprised how useful (and easy) it is.
Click to expand...
Hi, I think it is probably inevitable to get HA running. Seems like the integration with Sunsynk Inverters, etc. is great. So when I have my new Solar/Inverter system, I'll give it a go.
 
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