Trouble Shooting Guide 14
MXS 25, MULTI XS 25000
• No LED is lit when the charger is connected only to the battery
Explanation: The plug has to be connected for the LED’s to be lit.
• No LED is lit when the charger is connected only to the power outlet
Explanation: One of the LED’s at the lower row should light up when the
charger is connected to the power outlet.
Test: Make sure that there is power from 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
The LED’s on the bottom row are lit and you can change charging mode. If the
LED’s in the top row are not lit, the charging status is not being indicated.
Explanation: The battery voltage could be under 2±0.5V.
Test: Try to charge the battery in Supply mode for approximately 5 min. Then
try regular charging.
Test: Test the charger on a fresh battery.
• is lit for 4 hours and then turns into error mode
If the battery voltage is not above 12,5V after 4h the charger will turn into error
mode, because the voltage has not increased the way it should have done.
Explanation 1: The battery is too large in relation to the chargers capacity.
Test: Make sure that the battery/batteries are not larger than the
recommendations for MXS 25 and Multi XS 25000 (500Ah).
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 faulty cell in the battery.
Test: Change the battery.
• is flashing, then turns into error mode
Explanation: The battery is probably too sulphated to revive. The battery is
faulty and it is time to change it.
• is lit and then turns into error mode
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