Support Cooling mode in EHP geotherm VWS 83

[mikopp]

my cooling capable geotherm VWS 83 reports 1 when its in cooling mode for the Status

[hemagi]

How can the cooling be started?

My VWS 83/2 can only be set to cooling mode using a quick command, where one have to provide the number of days.
But in 50.ehp.mc.csv unfortunately only the quick commands

w,,,Party,Quick - Party,,,b505,05,value,,UCH,0=off;1=on,,
w,,,Load,Quick - WW Speicherladung,,,b505,06,value,,UCH,0=off;1=on,,
w,,,Save,Quick - Sparen bis,,,b505,07,value,,TTH,,,

are available

[mikopp]

I turn on the cooling mode via CoolingOperatingModeHc2. It still only reacts if condition applies. I have the cooling temperature of my remote low, the 24h average temp low. (Tot24hHc2) and the desired temperature of the heating itself lower than I really want it (21) and turn it on/off via loxone.

[hemagi]

My VWS 83/2 does not support the parameter you mentioned. I only have the possbilty to switch on cooling for some days, w/o time period support or any dependencies on temperatures.

Now I changed the lines

[SW>=220]r,,CoolingDay,CoolingDay,,,,"7C00",,,UCH,,,
[SW>=220]r,,CoolingActive,Kühlung aktiv,,,,"8300",,,onoff,,,

in 15.uih.csv in order to be able to write the regarding parameters via ebusd, resulting in

[SW>=220]r;wi,,CoolingDay,CoolingDay,,,,"7C00",,,UCH,,,
[SW>=220]r;wi,,CoolingActive,Kühlung aktiv,,,,"8300",,,onoff,,,

By writing a number > 0 of days to CoolingDay and set CoolingActive to "on" I am able to switch on cooling via MQTT. Writing "off" to CoolingActive ends cooling.

It would be nice if the changes could be made available in the repository so that others could also use them

[mikopp]

I have the cooling days to be 24 h every day. I then use the CoolingOperatingModeHc2 to explicitly turn it on/off when needed via automation. if CoolingOperatingModeHc2 is on auto it follows the schedule. I don't have any feature that say cool the next X days....

mine is Vailant geotherm 83/2 maybe yours is different. I think the VWS is not explicit enough

[hemagi]

Probably it depends on the software version. Our pump is 18 years old.

The lines I have changed are obviously valid or available since version 2.20. The release number of my i/o card is 3.44, of the UI is 2.26.

Your CoolingOperatingModeHc2 I can find in 50.ehp.mc.csv in the line

[SW>=350]r;w,,CoolingOperatingModeHc2,CoolingOperatingMode_HK2,,,,"8C01",,,hwcmode,,,"Kühlungsbetriebsart: Verfügbare Einstellwerte:3=Auto, 1=An, 2= Aus"

That means, one needs to have at least release 3.50, which I don't have, neither i/o nor UI.