All my Tradfri lights strobing for a few seconds then fully losing connection

Configuration Zigbee
1

Hi, i have a really weird problem which started around 3 weeks ago.

At random moments in the day (Not more than once a day, some days not), all my tradfri (around 15) bulbs and outlet switches strobe very fast for a second or two, turn on, then they fully lose connection to zigbee2mqtt after which i cannot control them any more. My Hue bulbs do not show this behavior.

I just caught it happening again at 18:30 local time, and i grabbed the zigbee2mqtt log around that moment. This is all logging that happened directly after this event:

zigbee2mqtt:info  2020-04-03 16:26:50: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"bedlamp_<redacted>"}}'
zigbee2mqtt:info  2020-04-03 16:29:03: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw03"}}'
zigbee2mqtt:info  2020-04-03 16:29:03: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw01"}}'
zigbee2mqtt:info  2020-04-03 16:29:03: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw04"}}'
zigbee2mqtt:info  2020-04-03 16:29:03: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw04"}}'
zigbee2mqtt:info  2020-04-03 16:29:04: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"werkkamer_jeffrey_bureau_links"}}'
zigbee2mqtt:info  2020-04-03 16:29:04: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw04"}}'
zigbee2mqtt:info  2020-04-03 16:29:04: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw02"}}'
zigbee2mqtt:info  2020-04-03 16:29:04: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"werkkamer_jeffrey_bureau_links"}}'
zigbee2mqtt:info  2020-04-03 16:29:04: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw01"}}'
zigbee2mqtt:info  2020-04-03 16:29:05: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw01"}}'
zigbee2mqtt:info  2020-04-03 16:29:05: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw03"}}'
zigbee2mqtt:info  2020-04-03 16:29:05: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw03"}}'
zigbee2mqtt:info  2020-04-03 16:29:06: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw01"}}'
zigbee2mqtt:info  2020-04-03 16:29:06: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"werkkamer_jeffrey_bureau_rechts"}}'
zigbee2mqtt:info  2020-04-03 16:29:06: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw04"}}'
zigbee2mqtt:info  2020-04-03 16:29:07: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw01"}}'
zigbee2mqtt:info  2020-04-03 16:29:07: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"werkkamer_jeffrey_bureau_rechts"}}'
zigbee2mqtt:info  2020-04-03 16:29:08: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"werkkamer_jeffrey_bureau_rechts"}}'
zigbee2mqtt:info  2020-04-03 16:29:09: MQTT publish: topic 'zigbee2mqtt/bridge/log', payload '{"type":"device_announced","message":"announce","meta":{"friendly_name":"tsw04"}}'

Now this shows that the bulbs/switches have probably powercycled and are re-announcing to the network. After each event, maybe one or two becomes responsive again, the others i have to re-pair to the network after which they work fine (until the next time this happens).

I have tested a lot of things. I run on the latest version of zigbee2mqtt (1.12). I have tried a different CC2531 stick, have upgraded the firmware on it, even tried the source routing firmware which also had the same problem. I have tried starting from scratch with zigbee2mqtt repairing all devices in the house. I have checked and my zigbee channel is the zigbee2mqtt default channel, and this does not overlap with my 2.4GHz wifi networks. My house has 3 layers of brick so interference from neighbors should not have much of an effect, while inside the house i receive no other wifi networks as my own, though there may be other kinds of interference, but that would be difficult to detect.

I did not yet try moving to another zigbee channel, but i wanted to check here first. Is there anyone who has experienced the same or something similar? This setup has worked for a year without any problems. I maybe suspect some kind of power issue in my area, but here in the Netherlands the power is really reliable and i never have outages or weird brownouts. Voltage is always around 230V, at least always between 220V and 240V. I hope anyone can give more insight on this as i’m afraid i am not going to find the cause on my own.

2

The strobe (7 times flashing) is resetting Trådfri. So that they are not connected anymore afterwards is logic.
The reason for the strobe I don’t know?? Something wrong with your electricity?

3

Yeah but 7 times switching the power does not reset the outlet switches, who also have this problem. Also, if my power was causing the strobing, i would have had other devices in the house acting weird.

Also, the lamps are strobing so fast, i cannot replicate that speed with a power button. The tradfri bulbs take half a second to turn on.

I have been sniffing some zigbee traffic to look into the problem. I see a lot of Network Status, 0x0000: Address Conflict messages in wireshark when switching on/off a bulb or control socket that is affected by this problem. Zigbee2mqtt logs ‘no network route’.

4

Do u have automations running? I had 3 automations running and that whas causing a conflict that it would make 2 lamps strobing. I then needed to take it out in order to stop. Otherwise I couldn’t turn it of. And then my home assistant wouldn’t recognize it. So I needed to change the lamp. And after a day of 2 when put it back my hassio would recognize it automatic again. Very strange behavior.

5

bye…!!! anne anne