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

[IgorYbema]

Ok then it is clear that the 124 byte doesn't work as was tested by @MiG-41 more than a year ago

[MiG-41]

Ok then it is clear that the 124 byte doesn't work as was tested by @MiG-41 more than a year ago

@IgorYbema Service claud it self read byte 124 as a status confirmation of SG. Only HP is not setting this byte correctly ( at least gen.H , maybe K, L ,M or even J do it correctly ). Someone with newer HP have to veryfy this ( have Optional PCB , turn on SG Ready , and log byte 124 ...)

[ElVit]

I have a J-series (IDU:WH-SDC0709J3E5, ODU:WH-UD09JE5).
For me byte 124 is also not changing.
See #660 (comment) .

[MiG-41]

Ok , You forced me to reapeat the tests :)

So lackly ,still my CZ-TAW1 has soldered USB-Serial adapter soldered to HP side , my Node-RED flow still exist.
So only changing byte 124 i get such result in Service Claud:

So i still keep my statement, Byte 124 acc to Service Cloud is for SG Ready status ( No matter what generation is , i use pattern for my 12kW T-CAP genH ) . Only case is the HP , with is not willing to present it on byte 124.... If J also not do it , then perhaps newer gen. will (otherwise Panasonic made a big bug here....)

[IgorYbema]

Yes probably it is only in new generations

[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

[ElVit]

Hi, today I tried also the same but made no progress.
I have a J-Model Heatpump with CZ-NS4P (IDU:WH-SDC0709J3E5, ODU:WH-UD09JE5).

1. I measured the voltage between the PINs when they are open:
   • VCC --- Bit1: 11,4 V
   • VCC --- Bit2: 11,4 V
   • Bit1 --- Bit2: 0V
2. In the Display Menu I activated SG-Ready:
   • Turn heatpump off
   • Main Menu --> Installer setup --> System Setup --> SG ready --> Yes
     • Capacity [1-0]: DHW --> 120%
     • Capacity [1-1]: Heat --> 120%
     • Capacity [1-2]: Cool --> -2°C
     • Capacity [2-0]: DHW --> 140%
     • Capacity [2-1]: Heat --> 140%
     • Capacity [2-2]: Cool --> -4°C
   • Turn heatpump on
3. I tried to connect VCC to Bit2:
   • VCC --- Bit2: 0 V
   • No change of target temp of DHW or Heat
   • No change on Bit 71-74 or 124
   • No change on the display
4. Tried the same as in (3.) but with VCC and Bit1 but also no success.

Am I missing something?

[ElVit]

Ah ok I found a byte change.
Byte 153 (TOP7) has changed from 0xA5 to 0xBB.
So the "Main outlet water target temperature" has changed from 37°C to 59°C.

But shouldn't also the "DHW target temperature" (TOP9, Byte 42) change?

The follwing bytes have also changed but thats probably because the heatpump started running:
111, 116, 169, 170, 171, 172

[IgorYbema]

There is no reason to use the SG ready. You can easily change all temperature requests yourself already (using heishamon commands) so why use SG ready for this?
But indeed if you use SG ready anyways the set temps should change so you can detect it already

[IgorYbema]

I think the SetSmartGridMode result isn't visible in a value. This is an optional pcb command and it emulates a signal on two inputs (00, 01, 10 or 11).
The only visible values are if SGmode is enabled or disabled and the capacities you can set in the menu.

But it could be we didn't decode this yet. Please compare a hexdump (http://heishamon.local/debug) from before a SetSmartGridMode and after and see what changed

[sigma415]

OK, understood, SetSmartGridMode seems to be also one of these "write-only" parameters.
Meanwhile I also realized that SG-ready is not really the best way to feed the heat pump with the surplus energy from the photovoltaic system.
Glad that Heishamon offers more and better alternative ways. :)

[sigma415]

Addition:
command SetSmartGridMode has no effect, as long as the optional board is installed in the HP. Looks like the only way is to connect the two relays in Heishamon to switch the both HW inputs.
SetSmartGridMode can only be used, when no optional board is installed and Heishamon emulates the optional board.
There could be no override of the HW inputs by Heishamon.

[blb4github]

Since a couple of weeks I have the optional board installed (main reason is to setup 2 zones for cooling) and I'm experimenting with SG ready as well. Is there still some debug information needed to see if the SG ready state can be shown via HeishaMon/MQTT?

[MiG-41]

Since a couple of weeks I have the optional board installed (main reason is to setup 2 zones for cooling) and I'm experimenting with SG ready as well. Is there still some debug information needed to see if the SG ready state can be shown via HeishaMon/MQTT?

As mentioned above , please observe byte 124 (or place a full hex answer with marking with state it is , if you can't count with is byte 124...) . Please give also what HP you have (especially generation).