Bbshd new controller error 10H

[Joris G.]

Hello everyone,


I am trying to solve the well-known "phantom" Error 10H issue after installing a brand-new replacement controller on one of my BBSHD motors.


Symptoms
The motor is completely cold, but Error 10H (overheating protection) appears immediately as soon as I power on the system.


After some research, I suspect a firmware/hardware incompatibility between an older BBSHD motor and a newer controller.


Motor

• Bafang BBSHD 48V 1000W
• Year of manufacture: 2016
• Serial number: 1611090286
• Controller that works perfectly:
  Model: BBS3
  Hardware Ver: V1.3
  Firmware Ver: V0.0.1.1
  Nominal Voltage: 48V
  Max. Current: 30A
• Manufacturer: HZXT

New controller showing Error 10H

• New replacement controller purchased via AliExpress
• Likely a production version from 2023 or newer

Manufacturer: SZBF


Model: BBS3


Hardware Ver: V1.5


Firmware Ver: V1.0.0.4


Nominal Voltage: 48V


Max. Current: 28A


The original controller works perfectly on the same motor. As soon as I install the new controller, Error 10H appears immediately.


From what I have read, newer controllers may interpret the temperature sensor values differently than older BBSHD motors. As a result, the controller incorrectly assumes that the motor is overheating and immediately switches to protection mode.


I have a laptop and a Bafang programming cable, so I would like to try flashing the controller with an older firmware version that is known to be compatible with pre-2020 BBSHD motors.


Could anyone help me with:

1. A download link to a stable, older BBSHD 48V firmware version.
2. The correct software to flash the firmware (STC-ISP or Bafang Firmware Update Tool).
3. Firmware versions that are proven to be compatible with BBSHD motors from the 2015–2018 period.
4. A repository, forum thread, or archive containing BBSHD firmware files.

I have come across references to firmware version CRR10E4830E105027.1_190927, but I have not yet been able to find a reliable download source.


Any advice, files, or links would be greatly appreciated.


Thank you very much in advance!


Kind regards,


Joris Goegebeur

 

[MarcHDdoc]

The only solution for your combination is the open source firmware. It is compatible with your controller and you can turn off the faulty sensor and set it to controller only. Do your research please.