Sideview07
New Member
- Region
- Asia
Getting error 21 when riding a ejoysport Bafang Max 35V250W on the lowest gear (36T x 42T largest cog) when climbing uphill. It gets jerky like power cut in and out. Eventually within secs screen reboot. Changed the chainring to 32T and now even the 2nd largest cog 36T would have the same problem. What could possibly cause this and what config that i can go try to change ?