I have had this recurring issue as well.
It has always been caused by debris that wrapped itself around the motor spindle and jammed into the height adjust piston assembly.
The way I solved it is as follows.
Remove the blade discs.
Remove the 10mm nut holding the blade disc motor mount and remove the disc mount.
Inspect the motor shaft. Every time I have removed the disc mount I have found an enormous amount of grass and debris wrapped around the motor output shaft. Remove this debris.
Inspect the motor shaft again. Most of the time debris has also worked its way into the spindle shaft as well. Sometimes I have been able to pull it out. Other times I have had to use a dental pick and compressed air to get individual blades of grass unstuck.
Remove the blade guards and spindle mount top plate. On my unit every single bolt was unseated. The blue Locktite simulant goo they use is too thick. So the bolts feel tight when they are not seated.
This allowed debris to accumulate unter the top spindle/blade guard mount. Clean all of that out as well. Again, compressed air and dental picks are your friend.
Inspect the height adjustment plunger assembly. Here too, debris works its way past the rubber seal and jams the assembly. I again have had to use compressed air combined with dental picks to maneuver the seal and remove the debris.
Reassemble the same way it came apart making sure the bolts are all actually seated. And don’t simply feel tight because of the copious amounts of blue goo used on the bolts.
After reassembly move the height adjust full up to full down 10-15 times to work out any additional debris.
Cross you fingers you got enough debris out this time and the overcurrent error is solved and.does not repeat after clearing errors in the app.
If the overcurrent persists, take it all apart again, use more air and dental picks. Rinse repeat until it functions.
I also suggest leaving the metal blade guards off. They do nothing but cause additional problems and provide no protection to the blades or discs.
And double and triple check the 10mm nylock holding the disc mount biscuit is tight. If this nut is not tight and seated properly, the discs wobble and cause motor overheating problems and or shatter when they hit the blade guards (if you reinstalled them).