Multi-sensor with the Blues (or rather without...)

I have 20 multi-sensors all which were working fine. This morning ALL of them had blue LED off and only responded to IR. All still had Indicator Brightness set to Fixed in Global tab.

Voltage to all units was fine, tried resetting, powering off everything, deleting from DB and re-adding (then transferring newly added over unit to network to try and 'wipe' any stubborn residual settings) but no joy.

Then added (to every unit) a GA to the Occupancy tab's enable/disable option and selected Enables radio button, turned on the GA and presto all back to normal. Have now reset Occupancy Enable/Disable back to unusedin all units and everything still ok.

Anyone have any ideas what might have happened? Very strange that ALL units got the same sickness unless the network sent out some weird command.

 

The most likely thing is that group address 255, the 'unused' group, became turned off by something on the network. Something, somewhere has turned off group 255. As you've done, you've assigned a known group address and turned the PIR enable/disable group address back on.

All our units are designed so that when a group address is set to 255 then they don't transmit commands on the network. It is quite possible however that a piece of software connected to the network through a PCI/CNI has sent an off command on group 255.

 

Thanks Newman. I am running Homegate connecting via a CNI, so maybe it did something.