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Egyras / HeishaMon

Panasonic Aquarea air-water H, J, K and L series protocol decrypt
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Solarpump #193

Closed BazemanKM closed 3 years ago

BazemanKM commented 3 years ago

Possibility to start/stop the solarpump who is connected to expansion board.

Start/stop is automatic in Panasonic when solar temp is higher than SWW sensor temp.

MiG-41 commented 3 years ago

Probably there is no direct way to do it. Perhaps it would be possible to switch off solar system on the fly.... Please join slack ,so we could see posibilities.

EDIT: Yes , just checked , Byte 24 , Bit 3&4 responsible for that b01 solar off , b10 - solar on buffer tank on , b11 - solar on dhw tank on. So when you do sollar off also solar pump stops , and it is possible to do it on fly ( so HP don't have to stop it self).

IgorYbema commented 3 years ago

Possibility to start/stop the solarpump who is connected to expansion board.

Start/stop is automatic in Panasonic when solar temp is higher than SWW sensor temp.

Can you please explain a bit more your use-case?

BazemanKM commented 3 years ago

Can you please explain a bit more your use-case?

The temp. sensor is on 2/3 of SWW tank. When temp. sensor is < solar.temp the solar pump starts pumping.

I have also a sensor at 1/3 of SWW tank, combined withe HeishaMon.

I want to start solar pump if 1/3 sensor temp is < solar. temp.

When this is possible. it should also be possible to start solar pump for buffer CV tank.

IgorYbema commented 3 years ago

These pumps are installed on the optional PCB I think? There is no way to control the pumps. The panasonic main pcb talks to the optional pcb and requests a pump start depending on its logic. We can simulate to be a optional pcb but only if the real optional pcb isn't installed. Then we receive the 'start pump' command just like the real optional pcb does. This will allow you to control a pump yourself but requires additional hardware (like a relay).

In your setup, I understand that you want to override the solar logic from the heatpump. Why not remove the solar configuration completly from the panasonic and control the pumps with your own logic. This again requires some relays (like sonoff or something like that) but that is not that hard to implement.

MiG-41 commented 3 years ago

Maybe you could change solar destination to buffer ,and then influance on buffer sensor ( without enabling bufer tank it self). I don't know what consequeces will have this on HP behavior it self ( like high temperature in buffer , but buffer it self not enabled).

Easiest way is to disable solar logic in HP and do it externaly ,like @IgorYbema mentioned. And beter use SSR relays instead traditional ,like sonoff have , since inductive low current from pump can kill traditional realay after some time.

BazemanKM commented 3 years ago

These pumps are installed on the optional PCB I think? There is no way to control the pumps. The panasonic main pcb talks to the optional pcb and requests a pump start depending on its logic. We can simulate to be a optional pcb but only if the real optional pcb isn't installed. Then we receive the 'start pump' command just like the real optional pcb does. This will allow you to control a pump yourself but requires additional hardware (like a relay).

In your setup, I understand that you want to override the solar logic from the heatpump. Why not remove the solar configuration completly from the panasonic and control the pumps with your own logic. This again requires some relays (like sonoff or something like that) but that is not that hard to implement.

Yes, pump is installed on and controlled by optional PCB. If it was possible and easy to override the solar logic from the heatpump that was a great option.

The bennefit when the setup is changed doesn't weight up to the costs i think.

IgorYbema commented 3 years ago

So yes this is not possible. Can you close the case?