Troubleshooting MultiPlus

Troubleshooting MultiPlus

Here are some generic tips for troubleshooting a MultiPlus



1. To reboot the processor disconnect the AC and DC connections and leave them both off at the same time for at least 30 seconds

2. With AC and DC power disconnected check for loose connections

3. Reconnect AC and DC power. 

2. Verify that you are connected to DC Power by measuring the voltage across the DC Input terminals

3. Verify that you are connected to AC Power by measuring voltage across the AC Input terminals

4. Verify that the unit is turned on using the switch on the front face (or for MultiPlus-II models the switch on the underside).

5. Remove the connection to any remote panel so you are testing the unit in its most basic state

6. If you are having trouble with temperature issues disconnect the temperature sensor (if fitted)

7. Test all the functions of the device even if you currently want to use only one function.

8. Is the ambient temperature excessive? Is there enough ventilation for the unit.  Is its fan running when it is trying to do something?

9. If you have any special programming like "assistants" installed check to see if something in the programming has turned off the unit.  If necessary remove the programming, reset to default and retest.

10. Is the Multi connected to a Cerbo and is DVCC engaged.  If so DVCC is in control of the Multi.  Check the status on the Cerbo.  Try it with the Cerbo disconnected.

11. Update the Firmware to the latest version.  One of the questions on the warranty form asks you to update the firmware to the latest version and then asks you what is the latest version.  So you might as well do it now and if it doesn't fix the problem at least you will be ready to go on to the next stage.  To update the firmware first load the latest version of Victron Connect into your computer.  The password for Victron Connect is zzz. Then connect your computer to the MultiPlus with Victron Connect using the Mk3 USB Interface.  It will prompt you to save your settings to the computer because the update will erase them all.  When you are done you can reload them.  My Blog post and Video explains how to do this.


Attached are the Pre-RMA instructions which you should go over prior to completing and RMA request.  The idea of all these steps is to get you to very thoroughly test your unit on site.  Often the problem is not the Multi but something else in the system.  Often people send back a Multi to the repair facility only to find there is nothing wrong with it.  If this happens they charge you for their time and return shipping. 
    • Related Articles

    • Troubleshooting Victron Connect Bluetooth

      Here are some troubleshooting tips if you are having difficulty connecting to your solar charge controller. 1. The controller must be powered up and connected to a battery.  There should be some indication of life such as a flashing light 2. The ...
    • Additional BMV troubleshooting and parameters

      The article below explains how the warranty procedure works for Victron.  It sounds to me like your meter is working but maybe not adjusted correctly.  There are all kinds of adjustments you can do to the meter to make sure it is getting a correct ...
    • MPPT troubleshooting section in the instruction manual

      The links below go directly to the troubleshooting section of the relevant instruction manual: Smart Solar MPPT 75/10 up to 100/20 Smart Solar 100/30 and 100/50 Smart Solar 150/35 and 150/45 Smart Solar 150/60 and up Smart Solar 150/70 VE Can and up ...
    • Installation and troubleshooting for Blue Sea 7622 ACR

      Here is the wiring diagram  http://assets.bluesea.com/files/resources/wiring_diagram/ML-ACRs.jpg And here are the instructions  http://assets.bluesea.com/files/resources/instructions/990180180.pdf And a troubleshooting ...
    • Fuse and DC cables for MultiPlus 12/3000

      The normal fuse you would install with the 12 volt MultiPlus 12/3000 is at least 350 Amps.  This is because it has a surge capability and because as the battery voltage varies so does the current.  A 350 amp fuse will avoid nuisance tripping caused ...