Smart Grid functionality monitoring

[rvdgaag]

I have the optional CZ-NS5P board in my K series, switching from cooling to heating and vise versa works perfect (I do this with a relay from my DigitalStrom smart home system). Also the heatpump seems to react to the off signal based in the following bit1 and bit2 settings:

bit1 Open bit2 Open -> normal working mode
bit1 Short bit2 Open -> both Heatpump and DHW off

When switching off nothing is shown in the heishamon monitor (or I don't know where to look) but the external pump switches off.

Now I need the other bit1 and bit2 setting to activate capacity mode 1 and 2 which settings I made in the installer menu.
bit1 open bit2 short -> capacity 1
bit1 short bit2 short -> capacity 2

But the big question is how can I see if the heatpump works like requested, I see no values in the heishamon monitor changing ?

[MiG-41]

True, There is no TOP with read SG status.
You are the first one , who use it :)
Please ask @IgorYbema ,so he could add it.
But first you can also confirm , if bytes 71-74 are really represent it , how we decode it long time ago: https://github.com/Egyras/HeishaMon/blob/master/ProtocolByteDecrypt.md

[rvdgaag]

Happy to check but how can I do that ?

[MiG-41]

Bytes 71-74 just store the values , with are presset in HP (procentages) , not gives status....
So we have to find out with bytes represet it.
Do you familiar with Console and Hexdump log ?

[MiG-41]

Ok got it , byte no 124:
Value 0x01 - Normal
Value 0x02 - HP Stopped
Value 0x03 - Capacity 1
Value 0x04 - Capacity 2

[rvdgaag]

OK cool, can take this up to Igor ?

Since "saldering" is going to disappear this feature will become a big issue next year for all Dutch Panasonic Heatpump users. Saldering means you receive a 100% money return for the PV energy you produce and feed to the grid, same as what you pay. This will stop so you need to find ways to use you excess PV energy.

[MiG-41]

To be honest , you will do it better with your external automation....
Here are only two settings ( Capacities) , where you give by procentage factor Target temperatures for Water and DHW....
That is very simple way ,and with home automation you could take much more data to set this temperatures....

But anyway this feature could be implemented anyway ( if there is somone for test :) )

[geduxas]

Yes pump by it's own have very limited capabilities for SR.. with automations you have unlimited power to use your exceed solar.. check out node red implementation