#Zigbee devices not responding

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candid imp
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I have a smlight SLZB-MR3U as my zigbee coordinator. zigbee specifially is running on the Radio 2, CC2674P10 chip.

Completely randomly today all devices became unavaliable. I have since tried the following repeatedly and in different orders:

  • restarted home assistant
  • reconfigured the zigbee adapter (migrate adapter)
  • restarted the SLZB-MR3U, disconnected from PoE for 30 seconds

The logs are showing that i am not getting any ACK messages, other than that i see no errors. debug logs enabled for the smlight integration and for the zigbee network.

It happened randomly, nothing has changed recently.

HAOS: 17.0
Home assistant core: 2026.1.3
SMLight zigbee firmware: 20240716

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using dev tools to issue commands do not work either

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attemting to migrate to my old slzb-06

candid imp
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it's back! managed to move to the 06 and it's now working again. HOWEVER, i was during this migration process seeing RF interference errors. so i relocated the 06 and then it finally managed to connect up everything

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going to try to migrate back to the MR3U

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everything is working again now. seems to be some RF interference issues

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lost my matter network in the process 🤦‍♂️

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so now i gotta fix that