Issue with Tuya Zigbee Switch (RoomsAI TS0003 - _TZ3000_avky2mvc) on Zigbee2MQTT and ZHA

Configuration Zigbee
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Hi everyone,

I’m experiencing a communication issue with a Tuya Zigbee switch (RoomsAI TS0003 - _TZ3000_avky2mvc) in Home Assistant using Zigbee2MQTT and ZHA. The device is behaving strangely—commands are sent, but it doesn’t always respond immediately, and some responses arrive with significant delay.

Tests I have performed:

:white_check_mark: Checked the Zigbee channel – I set it to channel 20, ensuring there’s no interference from Wi-Fi or other nearby Zigbee devices.

:white_check_mark: Restarted Home Assistant and the Zigbee coordinator – No changes in the device’s behavior.

:white_check_mark: Factory reset the switch and re-paired it – The issue persisted after re-adding the device.

:white_check_mark: Tested different Zigbee coordinators – I tried different coordinators (Sonoff Dongle-E, SLZB-06M, etc.), but the issue remained the same.

:white_check_mark: Tested on both ZHA and Zigbee2MQTT – On ZHA, the device appears and receives commands, but still has response failures. On Zigbee2MQTT, the issue is more frequent.

:white_check_mark: Checked Zigbee2MQTT logs – The device’s response is often delayed and sometimes doesn’t arrive at all. It seems to be a communication problem between the coordinator and the switch.

:white_check_mark: Works fine with the Tuya hub – The switch responds instantly when connected to the official Tuya hub, which suggests that the hardware is functional and that this might be a firmware limitation when used with standard Zigbee coordinators.

Possible causes and questions:

:one: Incompatible Tuya firmware? – Some Tuya devices are known to have issues with standard Zigbee coordinators and may require hacks or specific settings. Has anyone managed to update the firmware for this model?

:two: Zigbee2MQTT/ZHA incompatibility? – Is the _TZ3000_avky2mvc model known to have issues? Would any extra configuration help?

:three: Routing problem? – I tested it connected directly to the coordinator, but the issue persists. Zigbee traffic is normal for other devices.

:four: Is there an alternative firmware for this model? – I haven’t found anything on the Zigbee2MQTT Supported Devices list. Has anyone successfully flashed a different firmware on these Tuya switches?

If anyone has encountered this issue and found a solution, any tips would be greatly appreciated! :rocket:

Thanks!