I’ve been struggling for a while trying to find why some of our IKEA TRÅDFRI LED bulb E27/E14 806lm or 1055lm lamps of the 2100 & 2200 series will randomly turn themselves on (last state) or blink briefly and other IKEA devices, TRÅDFRI bulb E14 CWS 470lm lamps & original TRÅDFRI outlets that go offline, with a reset or power cycle required to bring them back.
I’m not new to HA, everything up-to-date running ZHA with a mix of 50 Zigbee devices (IKEA/Hue/Lumi/Belkin), set the home 2.4Ghz WiFi to Channel 1 away from the default ZHA Zigbee Channel 25. I’m on my 3rd coordinator (HA Connect ZBT-2) and the problems followed from the Sonoff ZB Dongle-E , ZBT-2 is positioned 4m from my WiFi router and centrally located in the home.
I configured for OTA IKEA updates but reluctant to universally upgrade the LEDs to latest firmware (e.g. 0x01000042), given I have some on this version that misbehave and some don’t…
So I’m looking for some wisdom from the collective
Sounds to me like your have fluctuations in the current, so the bulbs may drop out and end up in an unresponsive state or if they are lucky restart completely and go to the last on state.
No issues with supply, especially now we on a home battery.
Blinks are only seen on IKEA lamps, seemingly random and not on other (older) Zigbee lamps (Belkin). Groups of them will also blink together.
A home battery is not a garantee for a stable power grid.
The home battery complicate ty setup and can also be a cause and so can other heavy power consuming equipment, like an electric water heater, a pump or similar.
The reason some bulbs blinis and others dont are due to the internal design. Some designs use a capacitor to make sure the power is stable and the bigger the capacitor the better it can cope with fluctuations.
The fact that multiple of them experience the symptom means it is not just a faulty bulb.
Thanks Wally, the issue had existed before the home battery (10kWh) so sorry maybe a red herring. We’ve low power use home, rarely drawing more than a continuous 1kW, helps to also have passive solar hot water (gas boost), evaporative AC, it’s currently early Autumn and so no/minimal need to heat or cool.
Understand the electronic design and the capacitors role but if it’s design flaw I’d expect to find more mentions of IKEA Tradfri lamp problems from others…
The home ZigBee network has been otherwise very stable and responsive with my current HW & ZHA.
At this point I would start higher level and move down from a diagnostic point of view to isolate what it is vs what it isn’t, and specifically is it HA related:
If you look at the device in HA in Devices, there’s a panel that shows device activity. Does HA reflect activity for the affected devices when that is going on? Nothing?
What happens if you pull the usb cord from ZBT-2 and whatever its plugged into? Does the problem stop?
What happens if you delete the devices (or at least one) from HA. Does the problem stop?
Having worked with a Thread product vendor and having a different kind of electrical problem (ended up being my own)… they made me jump through hoops proving it was not HA and related items. The point being if this doesn’t work, it infers that the bulbs are faulty or incompatible as @WallyR suggests and you can explain how you’ve tried to eliminate the automation system as root cause.
Thanks for the reply, I see no messages in the device activity when these blinks occur, I shutdown HA completely (rpi4) and we still had random blinks. Before power up, I remove the USB connection to the ZBT-2, let HA come up and whilst booting, we were still seeing blinks.
Connected the ZBT-2 and ZHA happily started up.
Next step I think is to one-by-one power off a device and wait…
, ZBT-2 is positioned 4m from my WiFi router and centrally located in the home.
