Vestil S-xxx-FF - Manual (Page 18)

18
Maintenance and repair
T ROUBLESHOOTING G UIDE -- ______
Warning: Before performing any task, always block drive wheel off of the ground.
Consult the factory for problems at time of installation, or for any problems not addressed
below.
Problem: Possible cause(s): Action:
Unit doesn’t move when controls are
used.
Battery voltage low (<17)
Problem with motor controller
(check for LED flash code on side
of controller)
Fuse blown Charge batteries.
Consult diagnostics
page/factory
Remove back shroud and check
fuses (3 fuses).
Unit will not charge
Charger malfunction
Bad batteries Verify output voltage on charger,
will only get a reading when
connected to batteries; should be
approximately 28 volts.
Load test batteries
Unit will not go forward; reverse
works; belly switch just kills unit
(does not go forward and time out)
Broken wire, or loose connection
Contactor bad, motor controller bad
Locate Pin 2 on Molex connector at
motor controller. Trace wiring to
contactor and verify connection.
When forward is depressed, there
should be 24 volts on this wire
from Molex connector to the
contactor, if not, the motor
controller may be bad; consult
diagnostics page/factory. If 24
volts is present at contactor,
verify ground connection. If
ground is good, remove both wires
and check with ohm meter;
resistance should be
approximately 38 ohms. If it’s
open or zero, the contactor should
be replaced.
Unit will not go reverse; belly switch
works (i.e. when the handle is in
operating range and rotating
throttle in reverse and the belly
switch is hit, the unit moves
forward and times out)
Broken wire, or loose connection,
contactor bad, motor controller
bad
Same as above; except locate Pin 3
on Molex connector on motor
controller…and follow procedure.