SECTION 4 ELECTRIC SYSTEM
SU5 OWNERS MANUAL 2014
Repeated “Short Charging”, leaving the charge short of 100% will shorten operating cycle
distance and reduce battery life.
A fault occurring while charging causes the remote LED to flash with a code relaying the error.
Some errors may require repair by a qualified technician and others may be simply transient
and will automatically recover when the fault condition is eliminated and the charger cycled by
disconnecting the AC source for a minimum of 11 seconds.
NOTICE:
A Yellow (Amber) flashing remote LED indicates the thermostatic control has
limited the charger output due to ambient temperature conditions. It is still charging,
but at a reduced rate.
RED LIGHT CHARGER ERROR CODES
1 FLASH
= Battery Voltage High: Auto-recover. May be temporary condition, or wrong charger
installed, i.e. 36 volt charger on 48 volt battery pack.
2 FLASH
= Battery Voltage Low: Auto-recover. Confirm each individual batteries minimum
voltage with a voltmeter. Two or more 6 volt batteries register less than 5.85 volts, or
accumulative total pack voltage has been discharged to less than 20% remaining. Vehicle
operation will cease until batteries are recharged. See
SECTION 4 ELECTRIC SYSTEM,
EXCESSIVELY DISCHARGED BATTERIES.
3 FLASH
= Charge Timeout: The charging did not complete in allowed time, 12-14 hours. This
may indicate a battery problem, or that the charger output was reduced due to high ambient
temperatures. Disconnect AC supply, confirm sufficient ventilation, allow cool down time, and
restart charger.
NOTICE:
If the charger is exhibiting a 3 flash fault and it has been determined that the
cause was not due to ventilation or high ambient temperature, the following procedure
may restore the battery pack to normal operation.
1. Battery posts and terminals must be clean and free of corrosion.
2. For non-sealed batteries, check that electrolyte level just covers plates.
3. Plug in charger for at least a 16 hour charge.
4. Drive the vehicle for less than half the distance normally driven.
5. Repeat the above steps until the charger goes green 100% charge on a 16 hour
charge.
If repeated charge cycles (5-7) do not result in a 100% green charge, the batteries are
beyond useful life and will need replacement.
4 FLASH
= Check Battery: The batteries could not be trickle charged up to a minimum level to
start charger. This may be the result of badly discharged batteries, or one (or more) damaged
cells. See EXCESSIVELY DISCHARGED BATTERIES.
5 FLASH
= Over-Temperature: The charger shutdown due to high internal temperature. May
require reset (AC unplugged) and cool down to restart charging cycle. This fault may indicate
inadequate cooling airflow or high ambient air temperatures. Check for debris or blockage at
cooling fins. Move the vehicle to a cooler, well ventilated area, or adjust time of day when
charging.
6 FLASH
= Charger Fault: A fault was detected either in the batteries or in the charger. The
batteries must be tested to ensure there is no damage to one or more cells. If the batteries are
found to be good, the charger may need to be replaced by a qualified technician.
A STEADY RED FAULT LED
confirms an internal electrical fault of the charger and requires
charger replacement and return.
4-5
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