Over the last few weeks my SP9100 has been acting erratic. The issue began with the unit's "memory" setting not working so when I started the car, accessories that were on when vehicle was previously turned off did not automatically return to their previous on/off status even though the memory setting for that switch was activated in the app.
Then the entire unit would not turn on accessories randomly. This would come and go, sometimes on startup, sometimes after driving, and sometimes it would suddenly begin to work again.
It progressivley got worse and other weird behavior started to happen....the backlight staying on even after ignition was turned off, the backlight not coming on at all, accessories not turning on when the buttons were pressed even though the status light on the SP9100 unit was on for that switch. I havent been able to figure out any consistent pattern to help identify why sometimes it works and sometimes it doesnt. Now its basically just throwing the circiut fault error 90% of the time (light on the control unit blinks 3 times).
I have checked all the accessory wires and grounds, everything seems fine. The power wire that goes into my IGN switch in the fuse box is a pain to get to because of the mount tray so I havent actually opened that up but I cant find a reason an issue with that would cause the switch pros to behave like that. I did notice that one my passenger sidemarker light has been going off and on occassionaly, and I do have the white trigger wire tapped into the driver side sidemarker. Could an issue with one of those LED's cause faults to the trigger that would be making the unit completly shut down? Even when both sidemarkers are working the switch pros still doesnt function right.

any help or ideas are appreciated to help me troubleshoot

follow up: ended up being a bad power module on the SP 9100 itself. Sent it back to Switch Pros after filling out thier troubleshooting form which required some pictures, Ohm measurements, and install info. They sent me back a new power module within 2 days and its all working fine now