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 connec-
tions. If connections are clean and tight, trou-
bleshoot the battery pack. See Battery Pack
Troubleshooting.
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 Troubleshoot-
ing.
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, Ab-
normal Shutdown, and the Detection Error LEDs to
determine the cause for the error notification. See Ta-
ble 5.
Table 5. LED Error Codes
Condition Power On LED Abnormal Shutdown LED Detection Error LED
Battery Voltage High Off Off Flashing
Battery Polarity Reversed Off Flashing Off
Output Overload Off Flashing Flashing
Charge Level Unbalanced Flashing Off Off
Excessive Charging Time Flashing Off Flashing
Excessive Overload Flashing Flashing Off
Excessive Discharged Flashing Flashing Flashing
2200 YRM 1007
Battery Charger (Accusense by DPI
®
)
43
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