Error Messages - Keys Fitness Treadmill Service Manual

SF/B LED
The SF/B LED indicates if the motor encoder is operating correctly.
To check operation, with the treadmill plugged in but not powered up, slowly rotate the motor by hand by
pushing the flywheel. The SF/B indicator should flash corresponding to the "teeth" on the plastic fan hub.
CONDITION
1. The SF/B LED indicator does not flash in
above test.
2. The SF/B indicator does flash or come on,
but there are frequent E22 or E11 messages
and during speed calibration the Distance
window does not increase above zero and
will not calibrate.
LVS LED
The LVS LED indicates that the supply to the display panel is operating correctly.
CONDITION
1. The display panel will not power up.
Possible problem is the transformer of
electronic capacitor adjacent to the LED
has broken free from the PCB.
ESR LED
The ESR LED indicates if the motor control is receiving a speed reference signal from the control panel.
CONDITION
1. The motor does not move but the ESR LED
flashes after hitting the START/STOP, then an
error message such as E11 or E22, and the ESR
LED extinguishes.
2. The ESR LED does not begin to flash after
hitting the START/STOP button, then an error
message such as E11 or E22 appears.
SOLUTION
A. Check alignment of fan teeth and adjust
accordingly.
B. There is a possibility the encoder may
need to be replaced.
A. Replace Encoder.
SOLUTION
A. Replace M/C.
SOLUTION
A. Check the fuses on the Motor Control
board and the motor connections, then
attempt to re-calibrate (see page 26).
B. Use an external 12VDC battery and
check drive motor . If motor runs, replace
M/C board.
A. Check integrity of the wiring harnesses.
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