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) |
|
Alt 2: Battery temperature sensor faulty | Unplug battery temperature sensor from the MultiPlus. Reset the MultiPlus by switching it off, then wait for 4 seconds and switch it on again. If the MultiPlus now charges normally, the battery temperature sensor is faulty and needs to be replaced. |