Hi all,
We've had an issue on a customers bike (I work for a bike charity). It's a Suntour HESC system. There is no throttle and no walk mode.
Someone removed the chain set not realising the pedal sensor is mounted to the chain set on these bikes. It ripped off. I should add here that they didn't check the bike was working before doing this (although no reason to suspect it wasn't). It was a bottom bracket, chain and cassette replacement. Nothing electrical. Needless to say the sensor doesn't work anymore.
We sourced a replacement and I fitted it today. It powers up but the motor doesn't turn when pedals are turned.
If I unplug the pedal sensor I get an error. If I unplug the motor I get an error.
We have a more modern bike with the same system. So I tried swapping over the chain set (didn't work).
I also tried the customers wheel in our bike (worked fine - so the motor is good).
Tried our wheel on customer's bike and nothing happened.
Can't try our pedal sensor on customers bike as the plugs are different.
I've tried disconnecting the battery to let the system power down fully to reset but no joy.
I suspect the error is the replacement pedal sensor we purchased or the controller. But the system is powering up so I'm less sure it's the controller. Alternatively it's the motor lead but it's half epoxied into the controller and I get an error code when I disconnect the motor so it's doing something. We have a spare motor cable too but it's meant for a later model that isn't covered in epoxy.
I even have spare controllers but they're the more modern type so won't fit unfortunately.
Any suggestions? Am I missing something obvious? Is there a fuse or something?
No photos of the bike I'm afraid as it's a customer's but I've attached photos of the same model controller. As you can see it's not got any menus or anything I can access to change settings. Plus no walk mode.
Pedal sensor looks like this:
Crank looks like this:
Controller looks like this:
Battery has about 50% charge. So it's not that.
Thanks
We've had an issue on a customers bike (I work for a bike charity). It's a Suntour HESC system. There is no throttle and no walk mode.
Someone removed the chain set not realising the pedal sensor is mounted to the chain set on these bikes. It ripped off. I should add here that they didn't check the bike was working before doing this (although no reason to suspect it wasn't). It was a bottom bracket, chain and cassette replacement. Nothing electrical. Needless to say the sensor doesn't work anymore.
We sourced a replacement and I fitted it today. It powers up but the motor doesn't turn when pedals are turned.
If I unplug the pedal sensor I get an error. If I unplug the motor I get an error.
We have a more modern bike with the same system. So I tried swapping over the chain set (didn't work).
I also tried the customers wheel in our bike (worked fine - so the motor is good).
Tried our wheel on customer's bike and nothing happened.
Can't try our pedal sensor on customers bike as the plugs are different.
I've tried disconnecting the battery to let the system power down fully to reset but no joy.
I suspect the error is the replacement pedal sensor we purchased or the controller. But the system is powering up so I'm less sure it's the controller. Alternatively it's the motor lead but it's half epoxied into the controller and I get an error code when I disconnect the motor so it's doing something. We have a spare motor cable too but it's meant for a later model that isn't covered in epoxy.
I even have spare controllers but they're the more modern type so won't fit unfortunately.
Any suggestions? Am I missing something obvious? Is there a fuse or something?
No photos of the bike I'm afraid as it's a customer's but I've attached photos of the same model controller. As you can see it's not got any menus or anything I can access to change settings. Plus no walk mode.
Pedal sensor looks like this:
Crank looks like this:
Controller looks like this:
Battery has about 50% charge. So it's not that.
Thanks
