Customer Care
127576 DC Bus Timeout
Caused by: DC voltage has not reached 24 volts within 10 seconds after
key switch start.
1.
Place pos. meter probe A on +48V
battery terminal. Place neg. meter probe B
on -48V battery terminal. Voltage should
read 42V minimum. If not, charge batteries.
If good, proceed to the following steps.
2.
Place pos. meter probe A on top
solenoid post. Place neg. meter probe
B on -48V battery terminal. Voltage
should be the same as the battery set.
If not, replace battery to solenoid wire.
3.
Turn key switch to the on position. The
solenoid should click. Place pos. meter
probe A on bottom solenoid post. Place
neg. meter probe B on -48V battery
terminal. Voltage should be the same as
the battery set and the top solenoid post. If
voltage is >1V different between large
posts, replace the solenoid. If voltage is
1-2 volts controller has disconnected solenoid.
Voltage good proceed to step
4
.
4.
Place pos. meter probe A on
controller terminal B+. Place neg.
meter probe B on -48V battery
terminal. Voltage should be the same
as the battery set. If not, replace the
solenoid to controller wire.
A
A
A
A
B
B
B
B
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