I am replacing my bed axis stepper motor, any advice would be greatly appreciated!
Need to replace? Are preparing to replace? The old motor is removed and you powered up just to see?
I don’t know for certain without digging into the stepper driver documentation but I’d interpret those 3 errors together as an open circuit on the A coil of the stepper motor. Unpluged, broken wire between the main board and the motor, or a burnt out motor coil.
I find it amusing the error checking routine sends all 3 errors. Seems to me the OpenLoad would set the other 2 every time. Why confuse the operator with 3 errors that all say “hey I sent volts but not enough current went through”.
Edit:
otpw = Overtemp prewarning. Not an error just a warning the driver chip on the mainboard is getting close to shutdown. Set to allow the system to slow down to avoid hard shutdown
ot = overtemperature. Driver chip has reached maximum safe temperature and is disabled until reset
ola = = open load A circuit. Open load indication, Not an error. Diagnostic information. May be set with no fault present. See https://www.analog.com/media/en/technical-documentation/data-sheets/TMC2209_datasheet_rev1.09.pdf for additional details.