Vaillant Arotherm Plus heatpump stops several times a day when running ebusd with adapter shield v5 and homeassistiant

[HenningAust]

Hi,

I have recognized that my heatpumpt stops a couple of time per day for about 5min when having ebusd running to monitor the system. I recognized this when looking at the power consumption where I have a 5 min dip to 0W occassionally. At first I thought I have normal defrost cycles which also causes a dip (but not to 0W), but sometimes there I are two dips in the power consumption following each other in a short amount of time.

I was running ebusd 23.3 on a rasperry pi and updated to 24.1 in a docker container on my Odriod running homeassistant, but this did not fix the issue.

My setup is:
Arotherm Plus
HMU in hydro station
VRF720 controller
ebus shield V5 running standalone, wifi connected
ebusd with MQTT publishing to homeassistant, poll rate 60s, autoscan, read only
I have setup 5-6 read requests in homeassistand via mqqt-publish

basically everything works fine for monitoring the heat pump, but I have this random stops. Yesterday I disconnected the adapter shield. Now I can only check in the power consumption of the smart meter, but it looks like the random stops are gone.

Any ideas what can cause this?