So i had a zbt-1 installed (new since a month) and device on the network worked ok.
Since yesterday, no device responds anymore on the network, all unavailable.
Tried a lot of things:
trying to pair an ikea bulb that i remove first and factory resetted.
nothing seems to be able to communicatie with the stick anymore. Any chance the radio is broken?
Any other thing i can try?
First check your logs.
it was on debug, but dont see any errors or warnings, alle seems fine, except communicating with devices (also pairing new devices)
2025-06-04 08:30:39.396 DEBUG (MainThread) [zha.application.helpers] Device availability checker interval starting
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.application.helpers] Checking device availability
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0x08CC](TRADFRI bulb E27 WW clear 250lm): last_seen is 52608.25660443306 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0x08CC](TRADFRI bulb E27 WW clear 250lm): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0x086B](SP 220): last_seen is 48573.863291978836 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0x086B](SP 220): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0xB34F](RWL021): last_seen is 53909.2830991745 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.397 DEBUG (MainThread) [zha.zigbee.device] [0xB34F](RWL021): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xE4BD](ZBMINI-L): last_seen is 50502.70054650307 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xE4BD](ZBMINI-L): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xE069](DS01): last_seen is 51487.52171206474 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xE069](DS01): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0x0CD9](DS01): last_seen is 52423.13079857826 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0x0CD9](DS01): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xFC3C](TS0601): last_seen is 50201.59996986389 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0xFC3C](TS0601): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0x658B](TRADFRI on/off switch): last_seen is 90406.6038236618 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.398 DEBUG (MainThread) [zha.zigbee.device] [0x658B](TRADFRI on/off switch): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0x2670](OSP 210): last_seen is 52484.1695022583 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0x2670](OSP 210): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0xB259](TS011F): last_seen is 52517.720083236694 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0xB259](TS011F): Update device availability - device available: False - new availability: False - changed: False
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0x44F3](TS011F): last_seen is 49896.9887907505 seconds ago and ping attempts have been exhausted, marking the device unavailable
2025-06-04 08:30:39.399 DEBUG (MainThread) [zha.zigbee.device] [0x44F3](TS011F): Update device availability - device available: False - new availability: False - changed: False
got some error showing in the log when looking for new devices, which seems just to confirm the behavior, no responses from any device
zigpy.exceptions.DeliveryError: Failed to deliver message: 70:b3:d5:2b:60:05:a0:d9-1-1794-summation_delivered: skipping polling for updated state, available: False, allow polled requests: True
Failed to send packet, attempt 1 of 3
Traceback (most recent call last):
File "/usr/local/lib/python3.13/site-packages/zigpy/application.py", line 844, in request
await self.send_packet(
...<14 lines>...
)
File "/usr/local/lib/python3.13/site-packages/bellows/zigbee/application.py", line 936, in send_packet
raise zigpy.exceptions.DeliveryError(
f"Failed to deliver message: {send_status!r}", send_status
)
zigpy.exceptions.DeliveryError: Failed to deliver message: <sl_Status.ZIGBEE_DELIVERY_FAILED: 3074>
Max concurrency (8) reached, delaying request (5 enqueued)
Previously delayed request is now running, delayed by 1.66s
Failed to send packet, attempt 1 of 3
Traceback (most recent call last):
File "/usr/local/lib/python3.13/site-packages/zigpy/application.py", line 844, in request
await self.send_packet(
...<14 lines>...
)
File "/usr/local/lib/python3.13/site-packages/bellows/zigbee/application.py", line 936, in send_packet
raise zigpy.exceptions.DeliveryError(
f"Failed to deliver message: {send_status!r}", send_status
)
zigpy.exceptions.DeliveryError: Failed to deliver message: <sl_Status.ZIGBEE_DELIVERY_FAILED: 3074>
so i tried something else: I have a 2nd zbt which i planned for Thread radio. But after switchting to that device and setup a new network, all old devices are being listed again. I think something is stuck within HA/ZHA which makes this behavior stick.
Any ideas to fully remove all settings from the system and setuup ZHA from scratch?
So i did two things more:
deleted ZHA and installed Z2mqtt. There i could pair devices straight away. ZHA still didnt when reverting all.
So i dropped the zigbee.db and setup new network and started pairing all devices. No fun job, but it seems to get things moving again.