hello & need help with BBS02 display issue

[Lazygti]

Hi all. New to the forum. In fact, I've never used any forum before so not sure of the proper procedures.
This may have been covered before somewhere but, at the moment, I can't find any answers. Please bear with..
I have a Bafang BBS02 750w mid kit with a 500C display.
This kit has been on 2 different bikes and I've never had any issue with it.
I use 9 assist levels and used the USB cable to set each assist level to what I wanted.
Again, it's all working, and has previously worked absolutely fine including the thumb throttle.

I bought a new EKD01 Bluetooth enabled display 2 weeks ago.
Connected it all up & when I turned it on it immediately showed an ER04 error code.
Searched & found this to be a throttle position issue.
Disconnected the throttle but when I click the button to move it to level 1 assist the motor activates.
It does this when the throttle is plugged back in but when I turned it off & on I got the ER04 code again.
To make things more tricky, it would not connect to any of the apps I had downloaded - Bafabg Go plus, BikeGo & egg rider.
The Bafang Go plus app actually said 'not compatible'!
I sent the unit back & bought another one from a different retailer.
Connected it up and I have the very same issues.
To add insult to injury, my wife has the same kit on her bike with an 850C display.
I connected this EKD01 display to her bike and it worked fine!
All the time, when I plug my existing 500c display back in everything works as it should.
I am so sorry for this hugely long novella but I am thoroughly confused by this and near defeated.

Any help is much appreciated?

 

[guerney]

To add insult to injury, my wife has the same kit on her bike with an 850C display.
I connected this EKD01 display to her bike and it worked fine!

On your wife's bike kit, is the controller version and firmware version the same as yours? If the settings are the same too, the only differences would be wiring harness, throttle, speed sensor distance from magnet, speed sensor... Whatever the difference is, I hope you pin it down. If you must have the EKD01 display on your bike, swap over the motors (with controllers) or controllers?

 

[saneagle]

Hi all. New to the forum. In fact, I've never used any forum before so not sure of the proper procedures.
This may have been covered before somewhere but, at the moment, I can't find any answers. Please bear with..
I have a Bafang BBS02 750w mid kit with a 500C display.
This kit has been on 2 different bikes and I've never had any issue with it.
I use 9 assist levels and used the USB cable to set each assist level to what I wanted.
Again, it's all working, and has previously worked absolutely fine including the thumb throttle.

I bought a new EKD01 Bluetooth enabled display 2 weeks ago.
Connected it all up & when I turned it on it immediately showed an ER04 error code.
Searched & found this to be a throttle position issue.
Disconnected the throttle but when I click the button to move it to level 1 assist the motor activates.
It does this when the throttle is plugged back in but when I turned it off & on I got the ER04 code again.
To make things more tricky, it would not connect to any of the apps I had downloaded - Bafabg Go plus, BikeGo & egg rider.
The Bafang Go plus app actually said 'not compatible'!
I sent the unit back & bought another one from a different retailer.
Connected it up and I have the very same issues.
To add insult to injury, my wife has the same kit on her bike with an 850C display.
I connected this EKD01 display to her bike and it worked fine!
All the time, when I plug my existing 500c display back in everything works as it should.
I am so sorry for this hugely long novella but I am thoroughly confused by this and near defeated.

Any help is much appreciated?

That error code means that the controller is receiving a non-zero throttle signal at the time of boot-up. Possible reasons are:

• Cable or connector damage
• Water in the throttle
• Plastic throttle-stop inside the throttle got broken
• Corrosion inside the throttle connector
• Incorrect wire sequences between the two throttle connector halves.