Troubleshooting Flowcharts; Troubleshooting Flowchart: Motor Stalled / Overheated / No Signal - Nautilus Be Strong Commerical T912 Service Manual

SECTION 3: T912 TROUBLESHOOTING ELECTRICAL PROBLEMS

Troubleshooting Flowcharts

Use the flowcharts on the following pages to help you localize and correct electrical and electronic
problems.
Troubleshooting Flowchart: Motor Stalled / Overheated / No Signal - Error 1
Treadmill will not
elevate.
Is a
"Err Grd1"
No
present?
Note if after cycling power
Yes
the error disappears during
Grade movement changes,
assume excess movements
Check motor pwr
caused thermal overload.
P2, P4, P7, and
position J3
connections
No
Connections
good?
Yes
Enter Service
mode for Grade
check, move grade
up/dwn and
examine Grade
LEDs on hood.
Yes
Measure volt at P2
LEDs indicate
to P7 or P4 to P7
correctly?
No
Replace main
cable #41170
Yes
Grade motor
work?
No
Replace the Drive
Board.
End
42
Motor Stalled / Overheated / No Signal
ERROR 1
for LINE VOLT
Yes
Volt present Replace Grade
when LED ON? motor / wires
No
Yes
Other Err Code
displayed?
No
Do Nothing,
Thermal Protection
Switch was active
End
Note prior to replacing motor,
check for frozen drive "Nut" to the
drive shaft.
"Stalled Condition"
Go to appropriate
chart