Troubleshooting - Ecotric FAT26S900-MB Series Manual

Troubleshooting

We full understand your feelings when you meet a problem with the bike,the best and fastest
way for solving your problem is that: contact us on the website where you bought the bike,and
tell us your problem in details,it is the best if you can send us some clear pics or make a video
to show your problem.Every message will be replied in one businessday.
The following are some assist tips for electrical problems:
The display can not be lighted up
Please full charging the battery(6-8 hours),the LED on the charger should be green color when the
battery is full charged.
If still not work,please check the wires and battery,please make sure the connections are no loose
and the battery is installed in place,then please light up the display in correct order(light up the
power button on the battery,then press the "M" button and hold 3 seconds).
If still not work,we need to get a voltmeter,and do some testing:
First,please light up the power button,then test the battery output voltage(figure 7-1).If the voltage
is "0",it means there is something wrong with battery output plug,cell or fuse,please take a picture
or make a video to show your testing result ,then send it to us .The customer service department
will give you a solution;if the battery voltage is not "0",but less than 32V,please full charge the
battery (6-8 hours),then test it again; if the battery voltage is between 32v-42v,but the display can
not be light up,it means the battery is good, we need test the other 2 plugs.
Second,please open the controller box,and find the power wire(it is black and red color) that
connect the battery and controller(figure 7-2). Please test the voltage of the power wire,if it is "0",it
means the power wire need to replaced,please take pictures,and send the pics to us.If the voltage
is same as the battery,it means the power wires is good,we need to test the output voltage of the
controller,it is the plug that connect the controller and display,it has 5 wires on the plug,please test
the red and black wires(figure 7-3).If the voltage is "0",it means the controller need to be
replaced,please take some pictures and send them to us;if the voltage is same as the battery,it
means the display need to be replaced.Please picture the testing results and send them to us,itwill
help us for solving your problem asap.
We have video on YouTube: https://www.youtube.com/watch?v=zzrkBPsYjrg&t=1s
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