We had an issue where a PAC-S1 was “stuck” in Failsafe bootloader mode. The site had experienced some physical damage to the electrical feed from the power company that resulted in a power outage. It is not known if there was any surges before the outage. The controller is on a dedicated 24VDC linear power supply, I think it is 50W.
After power was restored the PAC-S1 came up in Failsafe bootloader mode and would not reset with subsequent power cycling. We were able to hold down Reset button to Restore Factory Defaults.
Anyone else have instances of controllers coming up in failsafe booloader mode after power issues?