Toro Greensmaster TriFlex 3400 - Fault 121: Invalid Hall State - Reel Motor 1

Fault121:InvalidHallState–ReelMotor1
InfoCenterDisplay:
_____FAULT#121____
1-INTERNAL
FaultDescription
TheinvalidHallstatefaultindicatesthattheHalleffectsensorsinthecuttingreelmotorareprovidingan
invalidmotorspeedreading.Whenasensorfails,thecuttingreelmotorcannotmaintainsteadyspeedand
becomesunstable.
CircuitDescription
Eachcuttingreelmotorisequippedwithaseriesof3identicalHalleffectsensorstomonitormotorspeed.
Theseareintegraltothecuttingreelmotorandcannotbeserviced.
RecommendedServiceActions
Step1:Verifythatthefaultrepeats.
1.ClearthesystemfaultsfromtheInfoCenter.RefertoClearingFaultsfromtheInfoCenter(page19).
2.Operatethemachine.
Pass
Thefaultdidnotrepeat.GotoReturningtheMachinetoService(page21)andfollowthestepslisted.
Note:Ifthefaultdoesnotrepeat,anisolatedeventhasoccurred.
Fail
Thefaultrepeated.GotoStep2.
Step2:Swapcuttingreelmotorsbetweencuttingunits.
Allofthecuttingreelmotorsareidentical.
1.RefertoFigure161tolocatecuttingunit1.
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