I bought Sonoff TRVZB thermostatic radiator valves to be paired with a dongle of the same brand via Zigbee2mqtt Unfortunately I have a problem, they do not want to enter pairing mode and remain blocked with an alternation of “FA” codes " and “12”. I tried a factory reset but I’m still stuck on this configuration. Has anyone had the same setbacks?
Problem solved, it seems that these thermostatic radiator valves do not work with rechargeable batteries!
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not true. I have mine operating with eneloop and ikea rechargeable batteries.
One thing that got me in the beginning — the valve must be mounted before you switch it on so that the actuator calibration finishes. Otherwise when you turn it on, it’s actuator senses void and the device won’t really start.
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How on earth do you pair it then? In my experience, new zigbee devices need to be really close to the controller to pair.