Service Manual

Fault
Number
Fault Title
Controller
Affected
Fault Condition/
Circuit
Description
Additional Notes
Service Actions
(Repair or replace any
worn or damaged parts)
94
48V Bus Overvolt—
CRM 1
Cutting Reel
Motor Controller
Cutting reel motor 1
has detected 67.5 Vdc
or more on the 48 Vdc
bus.
• This fault can also occur if
the TEC-5002 loses
communication with the
motor/generator and reverts
to limp mode.
• When the TEC-5002 loses
communication, it loses
engine speed control, and
the mechanical governor
limits engine speed to 3,200
rpm.
1) Swap cutting reel motors
between cutting units. Replace
the motor if the fault moves to
the new position.
2) Inspect main harness
connectors P46 and P47 at
cutting reel motor 1 for damage,
corrosion, debris, and proper
alignment of the pins inside the
connectors.
3) Test connectors P46 and P47
for 48V with the engine off and
the key in the ON position.
4) Test the power and ground
wiring resistance in main
harness connectors P46 and
P47.
95
48V Bus Overvolt—
CRM 2
Cutting Reel
Motor Controller
Cutting reel motor 2
has detected 67.5 Vdc
or more on the 48 Vdc
bus.
• This fault can also occur if
the TEC-5002 loses
communication with the
motor/generator and reverts
to limp mode.
• When the TEC-5002 loses
communication, it loses
engine speed control, and
the mechanical governor
limits engine speed to 3,200
rpm.
1) Swap cutting reel motors
between cutting units. Replace
the motor if the fault moves to
the new position.
2) Inspect main harness
connectors P38 and P39 at
cutting reel motor 2 for damage,
corrosion, debris, and proper
alignment of the pins inside the
connectors.
3) Test connectors P38 and P39
for 48V with the engine off and
the key in the ON position.
4) Test the power and ground
wiring resistance in main
harness connectors P38 and
P39.
Reelmaster 5010-H Diagnostic Fault Code Quick Reference Table Page 28 of 38