Table 5. LED Error Codes
CONDITION LED 1 LED 2 LED 3 LED 4 LED 5
Battery Voltage High Off Off Off Off Flash
Battery Pack Unbalanced Off Off Flash Off Off
Excessive Charging Time Off Off Flash Flash Flash
Battery Testing - 1 Off Flash Off Off Flash
Battery Testing - 2 Off Flash Off Flash Off
Inhibit Control Defective Off Flash Off Flash Flash
Internal Over Temperature Off Flash Flash Off Flash
Mode Selected Not Valid Flash Off Off Flash Off
Database Save Error Flash Off Off Flash Flash
Discharge Error Flash Flash Off Off Off
Severe Discharge Error Flash Flash Flash Off Off
Battery Storage Error Flash Off Flash Off Flash
Critical Battery Error On On Off Off Off
LEDs Frozen (no activity) or Charger seems
inoperable: Battery may have been subjected to an
Over-Discharge condition. Using a voltmeter check if
battery voltage is well under its 100% depth of
discharge level defined as 1.75V per cell for lead acid
batteries. For example, if a 24V lead acid battery
measures well under 21V, then this condition may
have occurred as a result of batteries left in lengthy
storage without a trickle charge applied to it. Try
removing the output leads from the battery pack (while
A.C. Power is disconnected from the charger) and
reconnecting the output leads.
Battery Voltage High: Charger’s DC cord set possibly
connected to a battery pack with voltage higher than
the output rating of the charger.
Battery Pack Unbalanced: Caused by unbalanced
battery condition and or excessive battery plate
sulphation. Example: some batteries are at a much
higher state of charge than others. This may require
replacement of the batteries. Refer to the Equipment’s
Operators manual for instructions on servicing the
battery pack.
Excessive Charging Time: Occurs when charging
took too long. Possible causes include: use of a
battery load that is draining energy from the battery
while the charger is trying to charge that same battery,
aged or unbalanced battery cell conditions, etc.
Battery Testing: This error is only generated by one
of two conditions found during the Pre-Qualification
Test Stage. Condition 1: A severely discharged
battery pack did not charge up to 1.75Vdc per cell
( 21Vdc for 24V-battery ), within 4 hrs. Condition 2: A
heavy load applied prevents charger from charging
battery pack above 1.75Vdc per cell.
Inhibit Lockout Control Defective: If an Equipment
Lockout Cable (Inhibit) is installed and supposed to be
active, but it is not. Check Inhibit vehicle wiring. If
correct, internal inhibit switch may have been
overload. Contact factory.
Internal Over Temperature: Charger shut down due
to an internal over temperature condition. Check fan
operation and remove blockages, if any.
Mode Selected Empty: The selected Charge
Algorithm, set via the dip switches, is empty and not a
valid setting for charging batteries. Reset the mode
select switches to a valid value.
Database Write Error: While disconnecting the
charger output leads from a battery pack, if the
charger was in the process of saving information back
into memory, this error may be produced. Contact the
factory to have a reset programming cable sent to you
to field reset the charger.
Discharge Error: Based on 1.75V/cell, this error is
produced when cell voltage falls below this value
(example: 21Vdc for 24V Battery Pack). A.C. Power
should be connected to charger and charging initiated
immediately.
2200 YRM 1508 ACCUSENSE Battery Charger
27
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