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Troubleshooting
ESI PWM: SAFETY SHUTDOWN: Loss of Speed Signal: Upper display lights but treadbelt does not move
56
6.15. ESI PWM: SAFETY SHUTDOWN: Loss of Speed Signal: Upper display lights but treadbelt
does not move
NOTE: USE THIS FOR DIAGNOSING ESI-PWM BOARD
Error Code: SAFETY SHUTDOWN Loss of Speed Signal
Upper display lights up but treadbelt doesn’t move:
Enter Diagnostic Speed Mode
:
Follow the diagnostics & calibration button sequence page:
:
In diagnostic mode does the
GREEN
BELTSW LED #5
illuminated on the PWM
board upon start up?
(#1 ON ESI-PWM LOCATOR SHEET)
Check the red wire on the 9-pin upper wiring harness for a
loose wire or connection.
(
Perform continuity test on the red wire
)
DID THE RED WIRE PASS THE CONTINUITY TEST?
1)
Shut the treadmill off by pressing the stop button on the treadmill and unplug from the outlet. Disconnect
the drive motor wires from terminals
P-4 BLACK & P-6 WHITE
from the
ESI-PWM
lower board.
2)
Plug the treadmill back into the outlet and enter into diagnostic mode.
3)
Press and hold the
Speed (+) Button
until the speed reaches 12.0 mph on the speed window.
4)
Setting your voltmeter on VDC check for proper voltage from the
P-4 and P-6
terminals at the lower
board for 90 vdc or better.
DID YOU MEASURE 90VOLTS DC OR BETTER AT THE BOARD?
1)
Check the motor brushes inside the motor to see if
they are about 3/8 inch thick in size.
ARE THE BRUSHES AT LEAST 3/8” LONG?
Replace the
ESI-PWM
lower board
(70455)
Replace the
MOTOR BRUSHES
(70222-M)
Test drive motor by following the steps below with the treadmill off
:
1.
Hook up the black and white drive motor wires to the terminals to a 9 volt battery or a cordless drill
battery. Polarity does not need to be observed.
2.
Using your voltmeter connect your
RED
test lead into the connector for the
BLACK
drive motor
wire. Connect your
BLACK
test lead into the connector for the
WHITE
drive motor wire. Position
your voltmeter so you can read it while standing on machine and walk on the treadbelt manually about
3mph.
DID THE DRIVE MOTOR GENERATE 20 TO 30 VDC OR DID IT MOVE WITH A BATTERY?
1.
Replace the
DRIVE MOTOR
(70014/70608)
YES
NO
YES
NO
YES
NO
Replace the
DISPLAY
board
Replace the
UPPER HARNESS
(70251)
NO
YES
NO
YES
*PERFORM AMP DRAW FOR A POSSIBLE WORN BELT & DECK*
Summary of Contents for L7 Club
Page 1: ...L7 L8 L9 Treadmill 90 Series Service Manual...
Page 4: ...Grounding Instructions 4...
Page 16: ...Introduction Recommended Tools 16...
Page 26: ...Electrical Reference Harnesses 26...
Page 30: ...Routine Maintenance Maintenance Checklist 30...
Page 102: ...Replacement Parts 102 Figure 8 8 Control Panel 17 16 15 13 14 12 11 11 9 5 3 7 6 2 4 8 1...
Page 116: ...Replacement Parts 116...
Page 119: ......