Hoymiles HMS 2000 4T - Dynamic Power Limiter 'sticks' to low limit although max. power was reported in status line

[Ulfnick]

Hi everyone !

Sorry - this one is allready known.

DTU FW is 2025.06.11

I recently updated the firmware on the Hoymiles 2000 4t on my roof - it has 500w peak power attached to all 4 strings -so 2kW peak.
To upgrade i had to use the Hoymiles DTU and the china cloud that I wanted to avoid to let the Servvice Team of HM do the update. Afterwards I updated the FW on the Open DTU on Battery without problems.

But for one ! Now after the dynamic power limiter restricted the power correctly to lets say 632 W following the net demand sometime it doesn't follow the increasing net demand. It states in the status line that it has incresed the dynamic limit to sometime 100% and although the panels are under full sunshine it sticks to a static value (like 632W Output) while the network needs e.g. 300 w more and doesn't change the value over hours.

I can unstick it be deactivating 'dynamic power limiter' and reactivating it.

Netdemand is shown correctly - radio transmission is all 5 seconds and reported 100% successful.

Any ideas ?

[Manos1966]

Old chinese proverb: "If it works, DON'T TOUCH IT!"

#1881 Hoymiles Firmware 2.0.4 und die hängende Regelung

[Ulfnick]

Ah sorry - ich hab nicht weit genug heruntergescrollt... - aber wenn ich nicht fummeln will was will ich dann hier ? (Hysterese runtergesetzt auf 5W)