Error Modes - Yale 524150797 Maintenance Manual

ACCUSENSE Battery Charger
(1) Connect the charger plug to a 120 volt AC
power source using a 20 amp rated
extension cord.
(2) How many times do all 5 LEDs flash upon
connection?
c. Is the charger currently set to the proper mode
for the battery type being used?
(1) YES: Proceed to Step 3.
(2) NO: Change the charger mode to the proper
setting for the battery type being used. See
or Changing Mode Setting . After changing
the mode setting repeat Step b to verify the
proper mode has been selected.
NOTE: The charger runs a pre-qualifying test (yellow
charging light flashing) at the beginning of the charge
cycle to determine the condition of the battery. This
test may last from 45 minutes to five hours. After the
test is complete, the charger should begin charging
(yellow charging light continuous) or may display an
Error Mode by flashing one or more of the red LEDs. If
an Error Mode is displayed, stop the general
troubleshooting and follow the chart and procedures in
Error Modes in this section.
3. Is the Power On LED illuminated continuously
when the charger is connected to a 120 volt AC
power source?
a. YES: Proceed to Step 4.
b. NO: Replace the charger.
4. Is the Detection LED illuminated continuously
when the charger is connected to a 120 volt AC
power source?
a. YES: Battery is not connected to charger or
battery voltage is less than 2V. Check
connections. If connections are clean and tight,
troubleshoot the battery pack. See Battery
Pack Troubleshooting.
26
b. NO: Proceed to Step 5.
5. Is the Charging LED either flashing or illuminated
continuously when the charger is connected to a
120 volt AC power source?
a. YES: Proceed to Step 6.
b. NO: If no other LEDs are flashing, replace
charger.
6. Check the output of the charger using a digital
voltmeter:
a. Connect the voltmeter to the charger's positive
(Red) and negative (Black) connections at the
battery terminals. Record the voltage and then
monitor it for approximately 3 minutes. Did the
voltage INCREASE while monitoring?
(1) YES: The charger is functioning correctly.
Proceed to Step 7.
(2) NO: Replace the charger.
7. Was the voltage reading in Step 6 higher than
16VDC?
a. YES: Proceed to Battery Pack
Troubleshooting.
b. NO: It is recommended that all batteries in the
battery pack be replaced.

Error Modes

The three red LEDs are used to troubleshoot the
charger. Observe the operation of the Power On,
Abnormal Shutdown, and the Detection Error LEDs to
determine the cause for the error notification. See
Table 5.
2200 YRM 1508