Yale 524150797 Maintenance Manual page 159

2200 YRM 1508
CONDITION
Battery Voltage High
Battery Pack Unbalanced
Excessive Charging Time
Battery Testing - 1
Battery Testing - 2
Inhibit Control Defective
Internal Over Temperature
Mode Selected Not Valid
Database Save Error
Discharge Error
Severe Discharge Error
Battery Storage Error
Critical Battery Error
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
Table 5. LED Error Codes
LED 1 LED 2
Off Off
Off Off
Off Off
Off Flash
Off Flash
Off Flash
Off Flash
Flash Off
Flash Off
Flash Flash
Flash Flash
Flash Off
On On
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.
ACCUSENSE Battery Charger
LED 3 LED 4
Off Off
Flash Off
Flash Flash
Off Off
Off Flash
Off Flash
Flash Off
Off Flash
Off Flash
Off Off
Flash Off
Flash Off
Off Off
LED 5
Flash
Off
Flash
Flash
Off
Flash
Flash
Off
Flash
Off
Off
Flash
Off
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