Mercury Boulevard Series - Page 23

E L E C T R I C B I C Y C L E M A N U A L – B O U L E V A R D S E R I E S
Page 23
6. E-bike Troubleshooting – Dealer use only
A). Error “21” current abnormality:
Step 1: Check if the connectors of the controller, the battery and the display are loose or damaged, or if the contact pin is
inserted crookedly;
Step 2: swap the controller for a new one and see if the error code is still displayed;
Step 3: if the problem persists, swap the motor with a new one and check if the error is still displayed;
Step 4: If the problem still persists, then change to a new wiring harness to check if the error persists;
B). Error “22” Throttle abnormality:
Step 1: Check if the connectors of the throttle and wiring harness are loose or damaged, or whether the contact pin is inserted
crookedly;
Step 2: use a new throttle to test;
Step 3: If the problem persists, then change to a new wiring harness to check;
C). Error “23” Motor Abnormality and “24”Motor hall abnormality：
Step 1: Check if the connectors of the controller and motor are loose or damaged, or whether the contact pin is inserted
crookedly;
Step 2: Check if the sensor light is working (i.e the light under the bottom bracket turns on when pedalling with the motor on
and an assistance level is selected);
Step 3: Check if the motor is working correctly (use the walk mode test and brake motor-cutout function);
Step 4: If they are working correctly, change to a new controller;
D). Error“25”brake abnormality：
Step 1: Check whether the connectors of the brake lever, wiring harness and controller are loose or damaged, or whether the
contact pin is inserted crookedly;
Step 2: Check if the left or right brake levers have any problems. Swap the levers around to check if the issue persists;