LifeSpan APEX - Communication Error, Display to Control Board or Vice Versa; No Speed Signal; Stall Protection; Trouble Shooting

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APEX
11. TROUBLE SHOOTING
1. Communication Error, Display to Control Board or vice versa
a. Check/change connection wire
b. Change display
c. Change control board
2. No Speed Signal
a. Check/change speed sensor
b. Change control board
3. Stall Protection
a. Check motor wires
b. Check motor
c. Check control board
4. Incline Failure
a. Check incline motor wires
b. Check incline motor
c. Check control board
5. Current Overflow Protection
a. Decrease load
b. Change transmission
c. Change motor
6. Motor Failure
a. Check motor wires
b. Check motor
7. Current Overflow
a. Adjust control board potentiometer
b. Check transmission
c. Change motor
8. Display Communication Error
a. Check display wires
9. Exterior Voltage Overflow or Low
a. Check current net
b. Repair