I received a call from a senior with a Bruno SRE 2010 with a flashing F2 code. I am an Acorn dealer and there is no Bruno dealer within a reasonable distance to make a service call. He wants to buy a new Acorn from me, but I told him I would take a shot and see if it is a simple fix before we toss the Bruno out.
Just repaired a Bruno elite curve with f2 code. Disconnected the 14 pin plug from aux board with power off, tapped on the two black ice cube relays on main pcb, plugged the aux board back up, turned unit on and ran fine. Need to replace board.