7. Trouble Shooting Table
Proceed as follows for quick detection of common faults.
DC loads must be disconnected from the batteries and the AC loads must be disconnected from the inverter before the inverter
and/or battery charger is tested.
Consult your Victron Energy dealer if the fault cannot be resolved.
Problem
Cause
Solution
The inverter fails to operate
when switched on
The battery voltage is too high or too
low
Ensure that the battery voltage is within the
correct value.
The inverter fails to operate
Processor in no function-mode
Disconnect mains voltage. Switch front switch
off, wait 4 seconds.
Switch front switch on.
The alarm LED flashes
Pre-alarm alt. 1. The DC input voltage
is low
Charge the battery or check the battery
connections.
The alarm LED flashes
Pre-alarm alt. 2. The ambient
temperature is too high
Place the inverter in a cool and well-ventilated
room, or reduce the load.
The alarm LED flashes
Pre-alarm alt. 3. The load on the
inverter is higher than the nominal load
Reduce the load.
The alarm LED flashes
Pre-alarm alt. 4. Voltage ripple on the
DC input exceeds 1.25Vrms
Check the battery cables and terminals.
Check the battery capacity; increase if
necessary.
The alarm LED flashes
intermittantly
Pre-alarm alt. 5. Low battery voltage
and excessive load
Charge the batteries, reduce the load or install
batteries with a higher capacity. Use shorter
and/or thicker battery cables.
The alarm LED is on
The inverter did cut out following a pre-
alarm
Check the table for the appropriate course of
action.
The charger is not
functioning
The AC input voltage or frequency is
out of range
Ensure that the input voltage is between
185Vac and 265Vac, and that the frequency
matches the setting.
The battery is not being
charged fully
Incorrect charging current
Set the charging current at between 0.1 and
0.2x battery capacity.
A defective battery connection
Check the battery terminals.
The absorption voltage has been set to
an incorrect value
Adjust the absorption voltage to the correct
value.
The float voltage has been set to an
incorrect value
Adjust the float voltage to the correct value.
The internal DC fuse is defective
Inverter is damaged.
The battery is overcharged
The absorption voltage has been set to
an incorrect value
Adjust the absorption voltage to the correct
value.
The float voltage has been set to an
incorrect value
Adjust the float voltage to the correct value.
A defective battery
Replace the battery.
The battery is too small
Reduce the charging current or use a battery
with a higher capacity.
The battery is too hot
Connect a temperature sensor.
Battery charge current drops
to 0 when the absorption
voltage is reached
Alt. 1: Battery overtemperature (>
50°C)
• Allow battery to cool down
• Place battery in a cool environment
• Check for shorted cells
MultiPlus 2kVA 120V
Page 15
Trouble Shooting Table
