Help please. New 24v Controller+Display Wiring headache 🥺

Justagirl

New Member
Region
United Kingdom
City
Worcester
Hello 👋 I'm new to this forum so please forgive me if I'm asking the wrong thing in the wrong place.
I have a replacement 24v controller with led display to fit to an old ebike with front hub motor.
So far everything is connected apart from the led display.
Since the two were bought together, I imagined the connections would be straight forward.🤔...nope.
I can get power to the motor but only if I join the two "intelligent identification" wires together and then it just runs without the signal from the pedal sensor or brakes.
Did I just buy the wrong controller?

Thanks in advance for any clues.
 

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The “intelligent identification” is the controllers “self learning” function. This function identifies, and self-corrects, the motor connection. These wires are probably the green individual wire. This is so the controller can “learn” your motor. You connect the wire and the wheel will stutter and spin. When it is spinning in the proper direction, you unplug the wire. Then, when you connect the display and use the throttle, the motor should operate correctly. You only need to do the “intelligent identification” once. So, unhook it after the wheel spins in the proper direction.

You mention that you bought the controller and display at the same time. Were they from the same vendor? Buying displays, or controllers, from different vendors MAY not work together, due to different vendors loading different “firmware”. This isn’t always the case, but there IS a possibility that this COULD happen.
 
Oh, looking closer, you have a “intelligent identification” wire connected to the white/yellow wire. That shouldn’t be. That yellow/white wire gets connected to something else. Though, I can’t tell what it connects to. Is that your “display” wire that has six wires? What display model do you have?
 
Oh, looking closer, you have a “intelligent identification” wire connected to the white/yellow wire. That shouldn’t be. That yellow/white wire gets connected to something else. Though, I can’t tell what it connects to. Is that your “display” wire that has six wires? What display model do you have?
Thanks for the swift response 🤠.
The controller and display came together as a package. I've since realised the yellow/white is probably for the light (which I don't have) The motor now works nicely with the "walk mode" button pressed but the pedelec sensor does nothing even though the light comes on as the disc passes it.
So Close....
 

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That’s great! Your motor is operating well. The PAS, is that new? Did you just install that? Sometimes the magnetic wheel is too far from the sensor. But the light comes on. So maybe the spacing is fine. I’m not familiar with that display, so I’m not sure if there are any settings to set on it.
 
Thanks . I'm still baffled but I've ordered another controller and I'll try that. Fingers crossed 🙄
 
Pedelec sensors need the magnets to have the right polarity (they have a north and south pole) and also to be spinning in the right direction when they pass the sensor. Unless it is a self contained unit, try flipping the disk on the pedals.

marav.jpg
 
Thank you 👍 I now have a new sensor and it is sending a signal to the motor....But the motor is not consistently on as it should be when the pedals are turning.
I think I probably have the wrong sensor. The new sensor and disc are not exactly the same as the ones I took off.
Next step is to order another part ( probably from China ) 🫤🤔
 
Hi sorry for a late response I have had a week away from this headache but now I'm back ...I have a DH sensor the same as the one I took off. It seems to fire the motor if I rotate the disc forwards and backwards. But nothing happens if I rotate the disc in just one direction, forward or backwards although the little red light flashes as the magnets pass. Do I have crossed wires somewhere??
This is getting quite depressing now 🫤
 
Can you show a picture of the PAS sensor, mounted on bike and also a picture of its connector?

I figure it wouldn't flash if the wires were crossed. I wonder if you bought a true scooter controller, which has no PAS connector, and you plugged the PAS sensor into the throttle connector? I
 
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Can you show a picture of the PAS sensor, mounted on bike and also a picture of its connector?

I figure it wouldn't flash if the wires were crossed. I wonder if you bought a true scooter controller, which has no PAS connector, and you plugged the PAS sensor into the throttle connector? I
Hi Here's some pictures of the new sensor on the bike, the old one, the 2 wiring connections and the display...
 

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You're sure the S810H is in PAS mode when powered up I see the label "- assist +" with three LED's under it. Pushing the mode button sequences thru those lights? Walk mode still works? DIsconnect the brakes if you have any connected.

I've never used a PAS sensor with built in LED. Always bought the cheapest ones available, and they worked although I often had to flip the magnet disk.

Well, it could be a bad controller or LED unit. I've had two Brainpower controllers, and one of them was bad when new. Got my money back from ebay.
 
You're sure the S810H is in PAS mode when powered up I see the label "- assist +" with three LED's under it. Pushing the mode button sequences thru those lights? Walk mode still works? DIsconnect the brakes if you have any connected.

I've never used a PAS sensor with built in LED. Always bought the cheapest ones available, and they worked although I often had to flip the magnet disk.

Well, it could be a bad controller or LED unit. I've had two Brainpower controllers, and one of them was bad when new. Got my money back from ebay.
Interesting to hear this as I've ended up sending two back to Amazon! One which arrived visibly damaged and the other just didn't work.
Meanwhile I swapped 2wires on the PAS cable and hey presto the sensor activated the motor ..backwards. So in the end I swapped the disc and sensor to the other side and everything now works as it should!
I can only hope this story helps someone else in a similar situation.....It's been emotional 🤣
 
Interesting to hear this as I've ended up sending two back to Amazon! One which arrived visibly damaged and the other just didn't work.
Meanwhile I swapped 2wires on the PAS cable and hey presto the sensor activated the motor ..backwards. So in the end I swapped the disc and sensor to the other side and everything now works as it should!
I can only hope this story helps someone else in a similar situation.....It's been emotional 🤣
 

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Glad to hear you got it going. I’m sure this will help someone else in the future as these are pretty common controllers. Thanks for sharing your outcome. :)
 
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