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Greensmaster 3320/3420Page 6 -- 36Electrical System
Cutting Unit Operating Problems (Continued)
Problem Possible Causes
None of the cutting units run when lowered with the
functional control lever in the MOW position.
NOTE: Make sure to check for machine electrical fault
to assist with troubleshooting. Also, use Hand Held
Diagnostic Display or InfoCenter Display to verify
operation of safety interlock system.
NOTE: If a cutting unit motor is faulty, other cutting unit
motors will start and run for several seconds and then
will shut off.
The cutting unit power disconnect couplers are not
connected (see Opening Electrical Circuit to Cutting
Units in the General Information section of this
chapter).
Wiring to run/mow/backlap circuit components is loose,
corroded or damaged (see electrical schematic in
Chapter 10 -- Foldout Drawings).
Fuse or fuse block is faulty (see Fuse Block in the
Component Testing section o f this chapter).
10 amp fuse or fuse holder in the E--reels circuit is
faulty (see Electric Reel Drive System (48 Volt DC)
Fuses in the Component Testing section of this
chapter).
Mow switch is out of adjustment.
Mow switch or circuit wiring is faulty.
E--reels enable relay or circuit wiring is faulty (fault
code should have been generated).
CAN--bus termination resistor(s) is faulty or missing
(fault code should have been generated).
The TEC Controller is faulty (fault code should have
been generated).
One of the cutting units does not run when lowered
with the functional control lever in the MOW position.
NOTE: If a cutting unit motor is faulty, moving the
suspected faulty motor to one of the other cutting units
should move the problem to the new location.
A problem with the affected cutting unit exists (see
Chapter 8 -- DPA Cutting Units).
The affected cutting unit motor is faulty (fault code
should have been generated).
NOTE: If a problem exists with either the generator as-
sembly or the electric reel drive system(48 volt DC) bat-
tery pack, a fault should have been generated. Check
the Diagnostic Light (serial number below 312000000)
or InfoCenter display (serial numberabove 312000000)
for possible faults.