Eco Stepper Control Failure.

[Bob Watling]

Hi
After researching the electric bike market I purchased two eco stepper's from Tesco 14 months ago at a good price , the main reason for choosing the eco stepper was they are light enough to pickup onto a bike rack and when folded fits in the car boot.

I have a motorhome and travel around Europe each year for a month or so, they have been used on the road and on forest paths with no problem, unfortunately they got left out in the rain one night and now I have a problem with the control panel on one of the bikes.

The three power (low, medium, high) lights stay on but the battery indicator lights are off.
I get no power to the motor.
I have tried alternative battery's but I get the same problem
Holding down both buttons nothing.

I would seam that it is the control unit.

Any suggestions how to test the control unit?

Regards
Bob

 

[Deleted member 4366]

You can bypass the unit but it would be better to test with a voltmeter. Voltmeters only cost a few quid:

http://www.ebay.co.uk/itm/Digital-LCD-Multimeter-Voltmeter-Ammeter-OHM-AC-DC-Circuit-Checker-Tester-Buzzer-/360538749861?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item53f1c8bba5

You have to remove one of the side panels under the battery ( 2 screws in the side and three or four very fiddly little screws in the corners) so that you can access the connector at the controller end of the wire. There's four wires on the connector: Red, blue, black and green.

Unplug the connector and check the voltage between the red and the black. It should be about 29V with the battery charged up.

Plug in the connector. Now you have to stuff your probes up the back of the connector. When you switch on the panel, the blue should go to the same voltage as the red. If it doesn't, the panel is faulty. You can bypass it by making a bridge between the red and blue wires. You then have to use the key-switch to switch the bike on and off, and you'll only get level one from the pedal sensor.

 

[pdarnett]

Hi Bob, post a picture of the control unit, I may have a spare one kicking about.