Please follow these instructions to conduct the calibration procedure:
Open the battery compartment
Move the lever towards the min resistance position (lvl 1)
Press the key on the circuit board on the side of the battery compartment once for a few seconds until the LED light blinks 3 times
Start pedalling at more than 10 Km/h and increase level every 5 seconds until you get to the max resistance available (lvl 8)
Continue pedalling at the max resistance level for 5 more seconds
If the procedure was successfull, the LED light will remain on for 10 seconds; otherwise after 120 seconds (max time for the calibration procedure) the LED light will blink for 20 seconds
Close the battery compartment
NOTE: Do not shift gears while pedalling.
NOTE: After the min resistance level (1) you can slow down speed.
Should the procedure not be succesfull, get someone to help you make sure that while conducting the procedure, at every level change, the red LED light blinks once before switching to the next level (wait a few seconds more than usual).