daviddlv
1 µW
My company rents bikes. We purchased dozens of Bafang 750W over the past 3 years with no issues. Last week we purchased 10 Bufang 750W mid motors from an Amazon vendor. 5 of them work fine. However, on 5 of the others they cut out every 10 seconds. The display stays on, but the motor just stops working. The only way to get it to start working again is to disconnect the battery and reconnect the battery. But the motor only runs 10 seconds. Only error code on display is 21H as we do not have speedometer installed. I hooked up the Bafang programming software and the motors that are cutting out every 10 seconds have identical settings to the ones that are working. The LVC is set to 41volts. I tested with several batteries charged 100% to 53volts.
Any ideas what could be going on with these 5 motors? Could 5 be defective? I'm stumped.
Any ideas what could be going on with these 5 motors? Could 5 be defective? I'm stumped.