One day suddenly the Z-wave communication to most (but not all devices) have turned red "no ack". I have done zero upgrading, zero changes. The affected devices are BeNext dimmers, Fibaro dimmers and Wall plug swithces.
My battery operated Danfoss thermostats are only partially communicating.
Only exception are the door sensors (I have two).
Devices very close to the Z-wave stick are equally affected.
I am clueless how to go about trouble shooting this.
The below excerpt from log-file shows that the Danfoss (TERM) units seems to repeating their status several times.
Any suggestions? I have not seen anything like this in several years of usage.
Z-Wave received "033 - Spisestue V TERM" status update battery level 64%
Z-Wave received "033 - Spisestue V TERM" status update battery level 64%
Z-Wave received "033 - Spisestue V TERM" status update battery level 64%
Z-Wave received "033 - Spisestue V TERM" status update battery level 64%
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalia plug dimmer" set brightness to 100 failed
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalias alment lys" off failed
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalia plug dimmer" off failed
Z-Wave received "Subwoofer plug" energy total to 75.50 kWh
Z-Wave received "Subwoofer plug" energy total to 75.09 kWh
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalias alment lys" set brightness to 100 failed
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalia plug dimmer" set brightness to 100 failed
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalias alment lys" off failed
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (057) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalia plug dimmer" off failed
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error no ack/nak/busy reply (055) for setMultiLevelValue (re-sending)
Z-Wave Error send "Natalias alment lys" set brightness to 100 failed