7. Troubleshooting guide
For unexpected behaviour or suspected product faults, refer to this chapter.
Start by checking the common issues described here. If the problem persists, contact the point of purchase (Victron dealer or distributor) for technical support.
If you're unsure who to contact or if the point of purchase is unknown, refer to the Victron Energy Support webpage.
7.1. Solar charger is inactive
7.1.1. PV voltage too low
PV voltage check procedure.
Caution
A very high voltage is present on the PV cabling even when the PV array is disconnected or switched off. Do not perform any of the procedures below unless you are a trained solar electrician. PV voltage can be up to 450V DC.
Switch off the Multi and ensure there is no voltage present at the PV terminals coming from the device.
Disconnect the MC4 connectors with a suitable tool.
Measure the voltage on the PV cables. It is not advisable to use standard multimeter probes for this operation. Use a fully insulated MC4 test lead set connected to the multimeter.
Confirm that the PV voltage measured is above the minimum PV start up voltage of 120V.
The minimum PV start up voltage is 120V but needs to be above 65V for the MPPT to continue operating.
If there is insufficient voltage on the MC4 PV cables.
Check the PV cables.
Check the fuses and circuit breakers.
Check for heavy cloud cover, bad weather and make sure it is not night time.
Is there excessive shading or the PV modules are very dirty.
Mechanical or electrical issues with one or more PV modules in the array.
Faulty wiring between the PV array Multi
Open or faulty circuit breakers
Blown fuse
Problems with a PV combiner.
If the MPPT still does not start after conducting the above checks then there may be a fault within the Multi
7.1.2. Reverse PV polarity
As long as the unit is installed within the published specifications, the PV input is protected internally against PV reverse polarity.
In the case of reverse PV voltage, the solar charger will not indicate an error.
The only way to detect reverse PV voltage is by the following signs:
The controller is not charging the batteries, the charge current is zero.
The controller is getting hot.
The PV voltage is zero, or close to zero.
If this is the case check for reverse polarity using a multimeter by ensuring that the positive PV cable is connected to the positive PV terminal, and the negative cable is connected to the negative terminal.
Caution
Measuring PV voltage at the PV terminals of a solar charger should only be performed by an electrical technician.
7.1.3. Safety relays are closed.
Safety relays, which are visible in the service compartment at the PV inputs, may have closed. This only happens if the Multi RS Solar has protected its self from a hazardous situation.
Under normal operating conditions the small black flag on top of the relay should be in the "OK" position. If the flag indicates towards the position with a danger symbol then it is closed. When the relays are closed the PV array is short circuited to stop PV power from entering the Multi RS Solar. The PV fuses or circuit breakers in the installation may open.
The fault cannot be cleared nor reset. The relays have closed to prevent further damage due to the internal fault.
The Multi RS Solar should be returned to the supplier.
Warning
DO NOT ATTEMPT TO RESET THE SAFETY RELAYS. THE RELAYS HAVE CLOSED TO PROTECT FROM A HAZARDOUS SITUATION.
7.2. Batteries are not being charged
There are a few situations that could cause the batteries to not charge.
This could be indicated by low or no battery current shown in the VicronConnect app.
The battery is full, and no more current is needed.
Wrong configuration (voltage or current set too low).
The charger is externally controlled (ESS or DVCC).
The battery temperature is too high and temperature-compensated charging is active or set incorrectly,
Reverse PV polarity.
7.2.1. Battery is full
Once the battery is full the solar charger will stop charging or will greatly reduce the charge current.
This is especially the case when at the same time the DC loads in the system are not consuming any power from the battery.
To find out what the state of charge (SoC) of the battery is, check the battery monitor (if present), or alternatively, check what charge stage the controller is in. Also, observe that the solar cycle is (briefly) progressing through these charge stages at the beginning of the daily charge cycle:
Bulk stage: 0-80% SoC.
Absorption stage 80-100% SoC.
Float or storage stage: 100% SoC.
Be aware that it can also be possible that the solar charger thinks the battery is full, while in reality, the battery is not full. This can occur when the charge voltages have been set too low, causing the solar charger to prematurely switch to the absorption or float stage. For more information see the Battery settings too low chapter.
7.2.2. Battery settings too low
|
|
7.2.3. Reverse PV polarity
As long as the unit is installed within the published specifications, the PV input is protected internally against PV reverse polarity.
In the case of reverse PV voltage, the solar charger will not indicate an error.
The only way to detect reverse PV voltage is by the following signs:
The controller is not charging the batteries, the charge current is zero.
The controller is getting hot.
The PV voltage is zero, or close to zero.
If this is the case check for reverse polarity using a multimeter by ensuring that the positive PV cable is connected to the positive PV terminal, and the negative cable is connected to the negative terminal.
Caution
Measuring PV voltage at the PV terminals of a solar charger should only be performed by an electrical technician.
7.3. Batteries are undercharged
This chapter deals with possible reasons why the solar charger is not sufficiently charging the batteries and the steps you can take to check or remedy the situation.
The batteries take too long to charge.
The batteries are not fully charged at the end of the day.
The charge current from the solar charger is less than expected.
7.3.1. Insufficient solar
Check if the solar charger reaches the float charge stage each day.
To investigate look at the history tab in the VictronConnect app. The histogram displays how long the batteries have been charged in the Bulk, Absorption and Float stage each day, for the last 30 days. If you click on one of the histogram columns you will see a breakdown of the charge stages.
You can use the charge times to see if the PV array is properly sized for your requirements.
A system that never reaches the float stage could have the following issues:
Not enough solar panels.
Too much load.
A problem with the array causing it to have a reduced power output.
For more potential reasons see paragraph: “PV power or yield less than expected”.
 |
System spending all its time in bulk with breakdown of charge stages - System in bulk and absorption
7.3.2. Too much DC load
The solar charger does not only charge the batteries, it also provides power for the system’s loads.
The battery will only be charged when the power available from the PV panels exceeds the power being drawn by the loads in the system, like lights, fridge, inverter, and so on.
If the system battery monitor is correctly installed and configured you can see how much current is going in (or out) of the battery and the solar charger will tell you how much current the solar array is generating.
A positive sign alongside the current reading means that current is flowing in to the battery, while a negative sign means that current is being drawn from the battery.
7.3.3. Battery cable voltage drop
If there is a voltage drop over the battery cables, the solar charger will output the correct voltage, but the batteries will receive a lower voltage which can potentially lead to undercharged batteries. A voltage drop in excess of 2.5% is unacceptable.
Battery charging will take longer.
The battery receives a too-low charge voltage.
There is a loss of charge power.
The battery cables heat up.
Battery cables with insufficient cross-sectional area.
Badly crimped cable lugs or terminals.
Loose terminal connections.
Bad or loose fuse(s).
For more information on cabling issues and voltage drop see the Wiring unlimited book.
This check must be performed while the charger is charging with a full current. Typically best done in the morning. Use the VictronConnect app to check the output current.
Measure the voltage on the battery terminals of the solar charger using the VictronConnect app or a multimeter.
Measure the battery voltage on the terminals of the battery using a multimeter.
Compare the two voltages to see if there is a voltage difference.
7.3.4. Wrong temperature compensation setting
If the temperature compensation coefficient is set incorrectly, the batteries can be undercharged or be overcharged. The temperature compensation can be set via VictronConnect or via a display.
To find out the correct temperature compensation coefficient setting for your battery, refer to the battery documentation. When in doubt use the default value of -64.80mV/°C for lead acid batteries and disable the temperature compensation setting for lithium batteries.
7.4. Batteries are overcharged
Warning
Batteries that are being overcharged are very dangerous! There is a risk of battery explosion, fire or acid leakage. Do not smoke, create sparks or have open flames in the same room as where the batteries are located.
 |
Incorrect charge voltage settings.
Applying equalization while the battery is not suitable for equalization.
High current and undersized batteries.
Battery faults.
Too high current, while the battery is not accepting charge anymore because of aging or prior mistreatment.
7.4.1. Battery charge voltages too high
If the battery charge voltages are set too high this will cause the batteries to overcharge.
Check if all the battery charge voltages (absorption and float) are set correctly.
The charge voltages have to match the recommended voltages as stated in the battery manufacturers documentation.
7.4.2. Battery unable to deal with equalization
During equalization, the battery charge voltage will be quite high and if the battery is unsuitable to be equalized, the battery will be overcharged.
Not all batteries can be charged with equalization voltages. Check with the battery manufacturer if the battery you are using needs a periodic equalizing charge.
Generally speaking, sealed batteries as well as lithium batteries don’t need and therefore should not be equalized.
7.4.3. Battery old or faulty
A battery that is at the end of its service life or has been damaged by incorrect use, can be prone to being overcharged.
A battery contains a number of cells that are connected in series. When a battery is old or has been damaged, a likely scenario is that one of these cells is not operational anymore.
When the faulty battery is charged, the damaged cell will not accept charge and the remaining cells will receive the broken cell’s charge voltage and thus will be overcharged.
To fix this, replace the battery. In case of multiple battery system replace the whole battery bank. It is not recommended to mix batteries of different ages in one battery bank.
It is hard to tell what has exactly happened to a battery during its lifetime. The solar charger will keep 30 day of battery voltage history. If the system also contains a battery monitor, or if the system is connected to VRM, the battery voltages and the cycle history of the battery can be accessed This will give a complete picture of the battery history and it can be determined if the battery is near the end of its service life or has been abused.
Find out how many charge and discharge cycles the battery has been subjected to. Battery lifetime correlates to the number of cycles.
Check how deep the battery has been discharge on average. A battery will last for less cycles if deeply discharged, compared to more cycles if discharged less deep.
Refer to the battery data sheet to find out how many cycles at what average discharge the battery is capable of. Compare this with the battery history and determine if the battery is near the end of its service live.
Check if the battery has been totally discharged at all. Total and very deep discharge will damage a battery. Check the battery monitor setting history on the VRM portal. Look for the deepest discharge, the lowest battery voltage and the number of full discharges.
Check if the battery has been charged with a too high voltage. Very high charge voltage will damage the battery. Check the maximum battery voltage and the high voltage alarms in the battery monitor. Check if the measured maximum voltage has exceeded the battery manufacturer recommendations.
7.5. PV problems
This chapter deals with the remaining solar problems that were not already discussed in the earlier chapters.
7.5.1. PV yield less than expected
Check the solar panel yield history in the VictronConnect app. Check the total maximum power (Pmax) for each day. Does this match the array power?
To find the potential solar yield per day for a specific PV array size in a specific geographical location, use the MPPT sizing calculator on the solar charge controller product page.
These are some of the reasons why the array is generating less power than expected:
Low sun angle, seasonal differences or morning/evening.
Cloud cover or bad weather.
Shading from trees or buildings.
Dirty panels.
Incorrect orientation and/or inclination.
Broken or faulty solar panel(s).
Issues with wiring, fuses, circuit breakers, wiring voltage drop.
Bad splitters or combiners, or these are used in an incorrect way.
Part of the PV array not working.
PV array design issues.
Solar array configuration mistakes.
The batteries are too small, or getting older, and have a reduced capacity.
 |
VictronConnect app history Pmax reading.
7.5.2. Full rated output not reached
There are a few reasons why the solar charger is not reaching its full rated output.
Some of these reasons have already been explained in the the chapter: “The batteries take too long to charge, are undercharged or charge current less than expected”. Some additional reasons are explained in this paragraph.
PV Array too small
If the PV array power rating is less than the solar charger nominal power rating, the solar charger cannot output more power than the connected solar array can provide.
7.5.3. Mixed PV panel types
It is not recommended to connect a mix of different PV panel types to the same solar charger.
Only use solar panels that are the same brand, type and model.
7.5.4. MC4 connectors wrongly connected
For a detailed explanation of how to connect MC4 connectors, MC4 splitters and MC4 combiners, see the Wiring unlimited book, chapter: “Solar panels”.
7.5.5. PV connections burned or melted
Burned or melted PV cables or connections are generally not covered under warranty. In most case this is due to any of the following reasons:
Solar cable
Cables with rigid core wire or rigid strands used.
Cables where the core wire has been soldered.
Cable too thin - remember that the current will be higher when the PV voltage is lower. For more information on cable thickness see the Wiring Unlimited book.
MC4 terminals
Current has exceeded 30A per connector pair.
Incorrectly crimped MC4 connectors.
Bad quality MC4 connectors used
7.5.6. Optimisers cannot be used
Do not use solar panels with optimisers together with the solar charger.
Nearly all optimisers contain an MPPT or other tracking mechanisms and this interferes with the MPPT algorithm in the solar charger.
7.6. Communication problems
This chapter describes issues that might arise when the Multi RS Solar is connected to the VictronConnect app, other Victron devices or third-party devices.
7.6.1. Bluetooth
Please note that it is highly unlikely that the Bluetooth interface is faulty. The problem is most likely caused by something else. Use this chapter to quickly rule out some of the common causes of Bluetooth issues.
For a full troubleshooting guide see the VictronConnect manual.
Check if Bluetooth is enabled
It is possible to enable/disable Bluetooth in the product settings. To re-enable:
Connect to the solar charger via the VE.Direct port.
Navigate to the controller settings and then to "product info".
Re-enable Bluetooth.
Check if the controller is powered-up
Bluetooth is active as soon as the solar charger is powered-up.
Check that Bluetooth is in range
In open space the maximum Bluetooth distance is about 20 meters. In a build-up area, inside a house, a shed, a vehicle or a boat this distance can be a lot less.
The Windows VictronConnect app does not support Bluetooth
The Windows version of the VictronConnect app does not support Bluetooth. Use an Android, iOS or macOS device instead. Or alternatively connect using a VE.Direct to USB interface.
The controller is missing in the VictronConnect app device list
Some steps to try to resolve this issue are:
Press the orange refresh button at the bottom of the VictronConnect app device list and check if the solar charger is now listed. Only one phone or tablet can be connected to the solar charger at any given time. Make sure no other devices are connected and try again.
Try to connect to another Victron product, does this work? If that also does not work, there probably is an issue with the phone or tablet.
Rule out any issues with the phone or the VictronConnect app by using another phone or tablet and try again.
If still unresolved, refer to the VictronConnect app manual.
PIN code lost
If you have lost the PIN code, you will need to reset the PIN code to its default PIN code. This is done in the VictronConnect app:
Navigate to the device list of the VictronConnect app.
Enter the solar charger's unique PUK code as printed on its product information sticker.
Click on the option symbol next to the solar charger listing.
A new window will open which allows you to reset the PIN code back to its default: 000000.
How to communicate without Bluetooth
In case Bluetooth is not functional, turned off or unavailable, the VictronConnect app can still communicate via the unit’s VE.Direct port. Or, if the unit is connected to a GX device, the VictronConnect app can communicate via VRM. For more information see the VictronConnect app chapter.
7.6.2. VE.Direct port
These are not common and if this occurs it is probably due to one of these issues listed in this paragraph.
Physical cable connector or data port issues Try a different VE.Direct cable and see if the unit will now communicate. Is the connector inserted properly and deep enough? Is the connector damaged? Inspect the VE.Direct port, are there bent pins? If this is the case, use long nose pliers to straighten the pins, while the unit is unpowered.
Note, unlike most other Victron products it is not possible to connect the to a GX device (i.e. Cerbo GX) using the VE.Direct interface. You must use the VE.Can interface to connect to a GX device.
7.6.3. VE.Smart communication
The Multi RS Solar does not support VE.Smart networking.
7.7. Error code overview
Error 2 - Battery voltage too high:
This error will auto-reset after the battery voltage has dropped. This error can be due to other charging equipment connected to the battery or a fault in the charge controller.
Error 3, Error 4 - Remote temperature sensor failure:
Check if the T-sense connector is properly connected to a remote temperature sensor. Most likely cause: the remote T-sense connector is connected to the BAT+ or BAT- terminal. This error will auto-reset after proper connection.
Error 5 - Remote temperature sensor failure (connection lost):
Check if the T-sense connector is properly connected to a remote temperature sensor. This error will not auto-reset.
Error 6, Error 7 - Remote battery voltage sense failure:
Check if the V-sense connector is properly connected to the battery terminals. Most likely cause: the remote V-sense connector is connected in reverse polarity to the BAT+ or BAT- terminals.
Error 8 - Remote battery voltage sense failure (connection lost):
Check if the V-sense connector is properly connected to the battery terminals.
Error 11 - Battery high ripple voltage:
High DC ripple is usually caused by loose DC cable connections and/or too thin DC wiring. After the inverter has switched off due to high DC ripple voltage, it waits 30 seconds and then restarts.
After three restarts followed by a shutdown due to high DC ripple within 30 seconds of restarting, the inverter will shutdown and stops retrying. To restart the inverter, switch it Off and then On.
Continuous high DC ripple reduces the inverter life expectancy.
Error 17 - Controller overheated despite reduced output current:
This error will auto-reset after charger has cooled down. Check the ambient temperature and check for obstructions near the ventilation grilles,
Error 20 - Maximum Bulk-time exceeded:
The maximum bulk time protection is a feature that was in the chargers when they were just released (2015 or earlier) and later the feature was removed.
If you do see this error, then update to the latest firmware.
If you then still have the error, perform a reset to factory defaults of the configuration, and reconfigure the solar charger.
Error 22, Error 23 - Internal temperature sensor failure:
The internal temperature measurements are out of range.
Disconnect all wires, and then reconnect all wires, to restart the unit.
This error will not auto-reset.
If the error remains, please contact your dealer, there might be a hardware defect.
Error 27 - Charger short circuit:
This condition indicates an over-current condition on the battery side. It can occur when a battery is attached to the unit using a contactor. Or in case the charger starts up without a battery connected but connected to an inverter that has a large input capacitance.
This error will auto-reset. If the error does not auto-reset disconnect the charge controller from all power-sources, wait 3 minutes, and power up again. If the error persists the charge controller is probably faulty.
Error 29 - Overcharge protection:
This error will auto-reset once the battery voltage drops below the float voltage. To protect the battery from over-charging the battery is disconnected.
Possible causes:
Over-sized PV array configuration, if there are too many panels in series the battery voltage cannot be reduced any further. Consider wiring more PV panels in parallel to reduce the voltage.
Configuration issue, check if the battery settings match with the installation (especially absorption and float voltage settings).
Another charger in the system raises the battery voltage above the expected level.
Error 33 - PV overvoltage:
This error will auto-reset after PV-voltage has dropped to safe limit. This error is an indication that the PV-array configuration with regard to open-circuit voltage is critical for this charger. Check configuration, and if required, re-organise panels.
Error 34 - PV overcurrent:
The current from the solar-panel array has exceeded the rated current limit. This error could be generated due to an internal system fault. Disconnect the charger from all power-sources, wait 3 minutes, and power-up again. If the error persists the controller is probably faulty, contact your dealer.
Error 35 - PV over power:
Please upgrade your firmware to at least v1.08 as the issues causing this error have been addressed.
If you are using firmware v1.08 or newer this error indicates that the internal dc voltage is too high. This error will auto-reset. If the error does not auto-reset disconnect the charge controller from all power-sources, wait 3 minutes, and power up again. If the error persists the charge controller is probably faulty.
Error 41 - Inverter shutdown (panel isolation resistance too low):
PV panel isolation resistance too low. Check the PV array cabling and panel isolation, the inverter restarts automatically once the issue is resolved.
Error 42 - Inverter shutdown (ground current too high >30mA:
The ground leakage current in the PV array exceeds the allowed 30mA limit. Check the PV array cabling and panel isolation. Check the installation and restart the unit using the power-switch.
Error 43 - Inverter shutdown (ground fault):
The voltage difference between Neutral and Ground is too high.
Inverter or Multi (not connected to the grid):
The internal ground relay is activated but the voltage over the relay is too high. The relay might be damaged.
Multi (connected to the grid):
The ground wire in the installation is not present or not connected properly.
Line and Neutral are swapped in the installation.
This error will not auto-reset. Check the installation and restart the unit using the power-switch.
Error 50, Error 52 - Inverter overload, inverter peak current:
Some loads like motors or pumps draw large inrush currents in a start-up situation. In such circumstances, it is possible that the start-up current exceeds the over current trip level of the inverter. In this case the output voltage will quickly decrease to limit the output current of the inverter. If the over current trip level is continuously exceeded, the inverter will shut down: wait 30 seconds and then restart.
The Inverter can supply more power than the nominal power level for a short time. If the time is exceed the inverter stops.
After three restarts followed by another overload within 30 seconds of restarting, the inverter will shutdown and remain off. To restart the inverter, switch it Off, then On.
If the error persists reduce the load on the AC out terminal by switching off or disconnecting appliances.
Error 51 -Inverter temperature too high:
A high ambient temperature or enduring high load may result in shut down to over temperature. Reduce load and/or move inverter to better ventilated area and check for obstructions near the fan outlets.
The inverter will restart after 30 seconds. The inverter will not stay off after multiple retries.
Error 53 - Inverter output voltage:
If the battery voltage is getting low and a large load is applied to the AC output the inverter is unable to maintain the proper output voltage. Recharge the battery or reduce the AC loads to continue operation.
Error 54 - Inverter output voltage:
If the battery voltage is getting low and a large load is applied to the AC output the inverter is unable to maintain the proper output voltage. Re-charge the battery or reduce the AC loads to continue operation.
If the error immediately pops up when switching on the inverter (without load) on a full battery the cause is most likely a broken replaceable internal fuse. Contact your Victron dealer for support.
Error 55, Error 56, Error 58 - Inverter self test failed:
The inverter performs diagnostic tests before it activates its output. In the case that one of these tests fails an error message is displayed and the inverter does not turn on.
First try to restart the inverter, by switching it Off, and then On. If error persists the inverter is probably faulty.
Error 57 - Inverter AC voltage on output:
There is already AC voltage on the AC out terminal before switching on the inverter. Check that the AC out is not connected to a mains outlet or to another inverter.
This error will not auto-reset. Check the installation and restart the unit using the power-switch.
Error 59 - AC-IN1 relay test fault:
Automatic checking of the disconnect means failure. This usually indicates a broken relay (sticky contact) in the AC input stage.
Error 65 - Communication warning:
Communication with one of the paralleled controllers was lost. To clear the warning, switch the controller off and back on again.
Error 66 - Incompatible device:
The controller is being paralleled to another controller that has different settings and/or a different charge algorithm.
Make sure all settings are the same and update firmware on all chargers to the latest version.
This error also appears if MPPTs are connected to a GX device while configured for a VE.Smart network. Disable the VE.Smart networking features and use DVCC on the GX instead.
Further troubleshooting steps described here.
Error 67 - BMS Connection lost:
This error shows when the charger is configured to be controlled by a BMS, but does not receive any BMS control messages. In that situation, the charger stops charging by reducing its output voltage to the battery base voltage. This is a safety mechanism, the reason to still enable the output is to allow a system to self-recover from a battery low situation.
Solar Chargers only show this error when there is solar power available and thus the device is ready to initiate charging. It does not show at night. And in case there is a permanent problem, the error will raise in the morning and clear at night, and so forth.
Solution: check the connection between the charger and the BMS.
How to reconfigure the charger to standalone mode
Our Chargers and Solar Chargers automatically configure themselves to be BMS-controlled when they are connected to one; either direct or via a GX Device. And that setting is semi-permanent: power cycling the charger will not reset it.
When removing charger from such system, and reusing it in a system without BMS, that setting needs to be cleared. Here is how to do that:
Chargers with LCD display: go into the setup menu, and change setting ‘BMS’ from ‘Y’ to ‘N’ (setup item 31).
Other chargers: reset the charger to factory defaults with VictronConnect, and then reconfigure it.
Error 69 - Network misconfigured:
Applies to Inverter RS and Multi RS models. Firmware versions 1.11 and higher.
This error indicates an issue in the configuration. There are units present on the same CAN bus that have different system configurations. Please ensure that all units are set to either “Single Phase” or “Three Phase” and all units are set to either “50Hz” or “60Hz”. All units will remain off until the configuration is fixed, after which the units will resume operation.
Error 70 - Network misconfigured:
Applies to Inverter RS models. Firmware versions 1.11 and higher.
Inverter RS units cannot be paired with a Multi RS and/or Transfer Switch.
Error 71 - Network misconfigured:
Applies to Inverter RS and Multi RS models. Firmware versions 1.11 and higher.
There are units present with incompatible firmware on the can bus. Make sure that all units are updated to the same firmware version. All units will remain off until the until the firmwares are updated, after which the units will resume operation.
Error 72 - Phase rotation:
Applies to Inverter RS and Multi RS models. Firmware versions 1.12 and higher.
Check the if the phase order is correct L1→L2→L3.
The inverters remain operational, they won't connect to the grid. Once the issue is resolved the units will connect.
Error 73 - Multiple AC inputs:
Applies to Inverter RS and Multi RS models. Firmware versions 1.12 and higher.
Per phase only one active connection to the grid is allowed, remove or switch off the redundant connection.
The inverters remain operational, they won't connect to the grid. Once the issue is resolved the units will connect.
Error 74 - Too many units in parallel:
Applies to Inverter RS and Multi RS models. Firmware versions 1.12 and higher.
The number of inverters in parallel doesn't match with the transfer capabilities of the ac input relay of the Multi RS or Transfer switch. Firmware v1.12 does not support parallel units and a grid connection, so any combination of a Multi RS with a grid connection with more than one unit in parallel will trigger this error code on the Multi RS. The Multi RS only supports 3 units in 3-phase configuration at the moment.
The inverters remain operational, they won't connect to the grid. Once the issue is resolved the units will connect.
Error 75 - Network misconfigured:
Applies to Multi RS models. Firmware versions 1.19 and higher.
Three phase operation is not yet certified in combination with the selected grid code.
The inverters remain operational, they won't connect to the grid.
Error 76 - Network incomplete:
Applies to Inverter RS and Multi RS models.
The inverters shut down because there are insufficient units to operate a networked setup. Check if all required units are powered on and that the CAN interface cables are connected properly. All units remain off until the installation is fixed, after which the units resume operation.
Related configuration settings in VictronConnect are “Prevent CAN network islanding” + “Number of inverters in the system” and “Continue with missing phase” in the System section.
Error 116 - Calibration data lost:
If the unit does not work and error 116 pops up as the active error the unit is faulty, contact your dealer for a replacement.
If the error is only present in the history data and the unit operates normally this error can be ignored safely.
Explanation: When the units power up for the very first time in the factory, it does not have calibration data and an error 116 is logged. Obviously this should have been cleared, but in the beginning units left the factory with this message still in the history data.
Error 117 - Incompatible firmware:
This error indicates that a firmware update did not complete, so the device is only partially updated. Possible causes are: device out of range when updating over the air, a cable got disconnected or power was lost during the update session.
To fix this the update needs to be retried, download the correct firmware for your device from the Victron Professional Portal.
When your GX device is connected to VRM, you can do a remote firmware update using this firmware file. You can do this via the VRM website or using the VRM tab in VictronConnect. VictronConnect can also be used together with the firmware file to update using a Bluetooth connection.
The procedure to add the file to VictronConnect and start the update is described here: 9. Firmware updates.
Error 119 - Settings data lost:
The charger cannot read its configuration, and stopped.
This error will not auto-reset. To get it working again:
First, restore it to factory defaults. (top right in Victron Connect, click on the three dots).
Disconnect the charge controller from all power-sources.
Wait 3 minutes, and power up again.
Reconfigure the charger.
Please do report this to your Victron dealer and ask him to escalate it to Victron; as this error should never happen. Preferably include firmware version and any other specifics (VRM URL, VictronConnect screenshots or similar).
Error 121 - Tester fail:
If the unit does not work and error 121 pops up as the active error the unit is faulty, contact your dealer for a replacement.
If the error is only present in the history data and the unit operates normally this error can be ignored safely. Explanation: when the units powers up for the very first time in the factory, it does not have calibration data and an error 121 is logged. Obviously this should have been cleared, but in the beginning units left the factory with this message still in the history data.
Error 200 - Internal DC voltage error:
The unit performs internal diagnostics when activating its internal DC-DC converter. This error indicates that something is wrong with the DC-DC converter.
This error will not auto-reset. Check the installation and restart the unit using the power-switch. If the error persists the unit is probably faulty.
Error 201 - Internal DC voltage error:
Applies to the MPPT RS, Inverter RS and Multi RS.
This “Internal DC voltage measurement error”, is raised in case an internal (high) voltage measurement does not match certain criteria.
First, make sure to update the firmware to v1.08 or later. The limits were too strict in earlier versions. And it could trigger falsely during MPPT start-up in the morning and MPPT shutdown in the evening.
If the error still occurs after updating to v1.08 or later, then it means that a measurement circuit inside the unit is broken.
This error will not auto-reset. Check the installation and restart the unit using the power-switch. If the error persists, even after above mentioned firmware update, the unit is most likely faulty and must be sent in for repair/replacement.
Error 203, Error 204, Error 212, Error 215 - Internal supply voltage error:
The unit performs internal diagnostics when activating its internal voltage supplies. This error indicates that something is wrong with an internal supply voltage.
This error will not auto-reset. Check the installation and restart the unit using the power-switch. If the error persists the unit is probably faulty.