is lit and then turns into error mode
The analysis phase is testing if the battery can retain the charger given.
is flashing, then turns
Explanation 1: Large loads are connected to the battery and draining the voltage.
Test: Disconnect the battery and try charging again.
Explanation 2: The battery cannot retain the charger given.
Test: The battery needs replacing.
Explanation: The battery is probably too sulphated to revive. The battery is faulty and it is time to change it.
The error LED is lit
Explanation 1: Reverse polarity.
No LED is lit when the charger is connected only to the power outlet
Test: Make sure that the + cable/clamp is connected to the + terminal and the – cable/clamp is connected to the – terminal.
Explanation 2: The clamps are short circuited.
Explanation 3: Loads are connected to the battery which requires more power than the charger can provide.
Test: Turn off or disconnect the loads when charging.
Explanation: One of the LED’s at the lower row should light up when the charger is connected to the power outlet.
No LED’s are lit on the top row when the charger is connected to both the power outlet and the battery
Test: Make sure that there is power from the power outlet.
The LED’s on the bottom row are lit and you can change charging mode. None of the LED’s in the top row, indicating charging status, are lit.
is lit for 4 hours and then turns into error mode
Explanation: The battery voltage could be under 2+/-0.5V.
Test: Test the charger on a fresh battery.
If the battery voltage is not above 25,5V after 4h the charger will turn into error mode, because the voltage has not increased the way it should have done.
No LED is lit when the charger is connected only to the battery
Explanation 1: The battery is too large in relation to the charger capacity.
Test: Make sure that the battery/batteries are not larger than the recommendations.
Test: Try to restart the charger because the charger might need more time to charge the battery.
Explanation 2: Larger loads are connected to the battery.
Test: Disconnect the battery and try to charge it without the loads.
Test: Try to restart the charging, the charger might need more time to charge the battery.
Explanation 3: If the battery is warm and/or is boiling heavily during the charging, it is most likely a defective cell in the battery.
Test: Change the battery.
Explanation: The plug has to be connected for the LED to be lit.