Why did these SONOFF ZBminis not work?

Hardware
, , ,
1

Simple 1 switch 1 light set up.

I’ve got slightly unusual (for a 25 year old house in the UK) 3 wire system with neutral at the switch - bonus! However when I wired up this SONOFF ZBMini module, I can’t get it to work reliably. ZHA pairing finds it almost instantly. Everything works OK initially but about 2-5 minutes after pairing I get the following events, and the module becomes unusable until I re-pair it, and then it stops working again after a few minutes.

  • SONOFF 01MINIZB Identify became unknown
  • SONOFF 01MINIZB Firmware turned off
  • SONOFF 01MINIZB Identify became unavailable
  • SONOFF 01MINIZB Light became unavailable
  • SONOFF 01MINIZB Firmware became unavailable

Tried with two different modules.

Is it likely to be:

  1. Wired incorrectly
  2. Zigbee network issue
  3. Broken modules (have tried two)
  4. Something else?

Noddy wiring diagram:

image
image1338×1066 81.4 KB

All help and advice gratefully appreciated as I really want to be able to use these throughout my house!

2

Hi thebunk,

Well if you get it paired, then stick it in the metal box in the wall, and it looses it, you have a weak mesh network and need more routing nodes closer to the switch(s).

Here are a few posts about helping your mesh zigbee network with devices that fall off the mesh.

1 Like
3

Appreciate that thank you. I should have said - this is while I’m testing it so all the guts are still hanging out of the wall rather than put back in the box.

Also should have said - this is in the same room as the zigbee gateway (Sonoff Zigbee Dongle-P)!

4

Is your zigbee mesh OK/stable otherwise?

TIP: check this Zigbee network optimization: a how-to guide for avoiding radio frequency interference…
Maybe you learn something new…