MPPT Solar Charger Error Codes

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Solar chargers’ LEDs show that something is wrong. The LED codes can be found in the Toolkit app.

You can read trouble codes in full with:

  • A color control or an MPPT control are examples of remote panels.

The error code list applies to these products:

  • All MPPT Solar Battery Chargers
  • Skylla Battery Chargers
  • Inverter RS / Multi RS
  • Orion Smart DC-DC Charger

Error Codes

Step 1: The battery temperature is too high
Once the battery temperature drops, this mistake will go away on its own. So as not to hurt the battery, the charger will stop charging. An outside monitor, such as Smart Battery Sense, or BMV, can send the temperature of the battery, or the charger if it has this feature, can measure it.

Bug 2: Too high of a charge in the battery
Once the battery power drops, this mistake will go away on its own. This problem might be caused by another piece of charging equipment hooked up to the battery or a problem with the charging device. This mistake can also happen if the voltage (12, 24, or 48V) of the battery is set to less than the voltage of the battery that is attached.

Error 3, Error 4: The temperature sensor far away failed
Make sure that the T-sense link is properly hooked up to a temperature monitor that is far away. The most likely reason is that the remote T-sense plug is hooked up to either the BAT+ or BAT- port. After a good link, this error will go away on its own.

Error 5: the temperature sensor far away failed (the link was lost).
Make sure that the T-sense link is properly hooked up to a temperature monitor that is far away. This mistake won’t go away on its own.

Fix Error 6 and Fix Error 7: The remote battery voltage sense failed
Make sure that the V-sense plug is properly hooked up to the battery wires. The most likely reason is that the remote V-sense plug is hooked up to the BAT+ or BAT- connections in the wrong way.

Error 8: The remote battery voltage sense failed (the link was broken).
Make sure that the V-sense plug is properly hooked up to the battery wires.

Error 11: Battery power is too high
Most of the time, loose DC wire links and/or DC wiring that is too thin cause high DC ripple. It turns off for 30 seconds after the high DC ripple voltage makes it so, and then it starts up again.

The inverter will shut down after three restarts and a shutdown because of high DC ripple within 30 seconds of restarting. It will then stop trying again. Turn the inverter off and then back on to start it up again.

Continuously high DC ripple shortens the life of the generator.

Error 14: Battery is too cold
LiFePO4 batteries should not be charged when the temperature is low because this can damage the cells.

Error 17: The controller got too hot even though the output current was lowered.
Once the charger has cooled down, this mistake will go away on its own. Check the temperature outside and see if there are any things blocking the fan.

Err 18: Controller has too much current
This mistake will fix itself. If the mistake doesn’t go away on its own, unplug the charge controller from all power sources, wait three minutes, and then plug it back in.

Possible reasons why there is too much power on the battery terminals:

Putting and taking away a very heavy load from the battery side.
An abrupt change in light led to a short-term over-power in the mppt.
Putting too much on the inverter’s AC power.
Answers that could work

If you can, make sure the unit has enough cooling; a cooler unit can handle more power.
Cut down on what the inverter has to do.
Before using the inverter, charge the battery. When the battery energy is greater, the same amount of power needs less current.
Error 20: Maximum bulk-time had been reached
Sun chargers
The highest bulk time security was in the chargers when they were first released, which was in 2015 or earlier. It was later taken away.

If you do see this message, make sure you have the most recent version.

If you still get the error, reset the setup to its original settings and set up the solar charger again.

Power adapters
The Skylla-i and the Skylla IP44 both have this safety turned on by default.

This mistake shows up when the battery’s absorption voltage has not been reached after 10 hours of charge.

This safety function can find a cell that is shorted out and stop charging it.

Err 21: Problem with the current sensor
The reading for the current is not in the right range.

Take out all the lines and then put them back in to restart the charger. Also, check that the minus sign on the MPPT charge controller (PV minus or Battery minus) is not going around the charge controller.

This mistake won’t go away on its own.

If the mistake keeps happening, please call your dealer. There may be a problem with the hardware.

Error 22, Error 23: The temperature sensor inside the computer failed
Readings of the body temperature are not in the right range.

Take out all the wires and then put them back in to turn the unit back on.

This mistake won’t go away on its own.

If the mistake keeps happening, please call your dealer. There may be a problem with the hardware.

Error 24: The fan failed
This mistake means that the fan is turned on, but the circuit doesn’t record any energy being used by the fan. The chances are it’s broken or blocked.

There may be a problem with the tools, so please call your provider.

Only works with Skylla-IP44 and Skylla-IP65 charges.

Error 26: The terminal got too hot
Power connections got too hot. Check the wiring, making sure you know what kind of wiring and strands it has, and/or tighten any bolts that need to be tightened.

This mistake will fix itself.

Error 27: The charger has a short!
This means that there is too much power on the battery side. It can happen when a battery is connected to the unit with a contactor. You could also connect the charger to an amplifier with a high input capacitance if it starts up without a battery plugged in.

This mistake will fix itself. If the mistake doesn’t go away on its own, unplug the charge controller from all power sources, wait three minutes, and then plug it back in. It’s likely that the charge driver is broken if the mistake keeps happening.

Error 28: Problem with the power stage
This mistake won’t go away on its own.

Take all the wires off and then put them all back on. It’s likely that the charge driver is broken if the mistake keeps happening.

Keep in mind that this mistake was added in v1.36. It might look like the software update caused this problem when you do an update, but it didn’t. It was already clear that the Solar charger wasn’t working 100% before the update; installing v1.36 or later just made it clearer. The unit needs to be changed out.

Error 29: Protection against overcharging
When the battery voltage drops below the float voltage, this mistake will go away on its own. The battery is removed to keep it from getting too charged.

One reason could be:

too many panels in a series: If there are too many panels in a series, the voltage in the battery can’t be lowered any further. To lower the voltage, you might want to connect more PV cells in parallel.
There may be a problem with the setup. Make sure that the battery settings match the installation, especially the settings for absorption and float voltage.
The battery’s power is greater than what another charger in the system would anticipate.

Err 33: PV power is too high
Once the PV power drops to a safe level, this error will go away on its own. This mistake means that the PV array setup for open-circuit voltage is very important for this charger. Check the arrangement and rearrange the panels if necessary.

Error 34: PV high current
The solar panel array’s current has gone over its stated current limit. This mistake could be caused by a problem inside the system. Take the charger off of all power sources, wait three minutes, and then plug it back in. If the mistake keeps happening, the controller is probably broken. Please call your provider.

Error 35: PV too much power
This rule is for the MPPT RS, Inverter RS, and Multi RS models.

Please update your version to at least v1.08 because the problems that were causing this error have been fixed.

If you have software version 1.08 or higher, this mistake means that the DC voltage inside the device is too high. This mistake will fix itself. If the mistake doesn’t go away on its own, unplug the charge controller from all power sources, wait three minutes, and then plug it back in. It’s likely that the charge driver is broken if the mistake keeps happening.

Errors 38, 39, 80, and 87: PV Input shut down
The PV Input is internally shorted when these mistakes show up to keep the battery from getting too charged.

Make sure you have the most recent software version before you try any other fixes.

Reasons why this mistake might happen:

The power of the battery (12/24/36/48V) is set wrong. That’s how you set the right Battery Voltage…
There is something else hooked up to the battery that is set to a higher power. Take the case of a MultiPlus that is set to equalize at 17 Volts, but this is not set up in the MPPT.
Get rid of errors:

In order to fix errors 38 through 87, you must first unplug the battery and the solar panels. Once the three minutes are up, connect the battery first, then the screens.
Error 39: The charger will start up again by itself when the battery voltage falls below its highest setting, which is usually for Equalization or Absorption voltages. Also, it might take a minute to fix the fault.
For errors 80 to 83, first take off the solar panels and the battery, then follow these steps to restart the system.
It’s likely that the charge driver is broken if the mistake keeps happening.

Err 40: The PV input did not shut down.
The charger will enter a safe mode if it can’t turn off the PV input. This is done to keep the battery from overcharging or having too much energy on its points. So that can happen, the charger will stop charging and cut off its own output. The charger will start to lose its power.

Problem 41: The inverter shut down (PV separation).
Too little separation resistance in the PV screen. Check the wiring and separation of the PV grid and panels. Once the problem is fixed, the inverter will restart itself.

Message 42: The inverter shut down (PV separation).
The PV array has a ground loss current that is higher than the 30mA limit. The PV array’s wiring and panel separation should be checked. Check the fitting and use the power switch to turn the unit back on.

Message 43: The inverter shut down (Ground Fault).
There is too much power difference between Ground and Neutral.

Multi or Inverter (not hooked up to the grid):

The internal ground circuit is turned on, but there is too much power across it. The chain could be broken.
Multi (linked to the grid):

Installers either don’t have a ground wire or don’t connect it correctly.
When the installation is done, the Line and Neutral are switched.
This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on.

Error 50 and 52: Inverter overflow and peak current
When they first turn on, some loads, like motors or pumps, draw a lot of inrush current. It is possible for the start-up current to be higher than the inverter’s over-current trip level in this case. In this case, the output voltage will drop quickly to keep the inverter’s output current in check. If the overcurrent danger level is continuously passed, the transformer will turn off. Wait 30 seconds, and then turn it back on.

There are times when the inverter can give out more power than it needs to. The converter stops if the time is up.

The inverter will turn off and stay off after three restarts and another overload within 30 seconds of the third restart. Turn the inverter off and then back on to start it up again.

Taking away machines or turning them off will lower the load on the AC out port if the error keeps happening.

Err 51: Too hot inside the inverter
If the temperature outside is high or there is a lot of work to do, the system may shut down because it gets too hot. Lower the load and/or move the generator to a better-ventilated area. Also, make sure there are no things blocking the fan ports.

The inverter will turn itself back on after 30 seconds. Even after several tries, the power won’t stay off.

Error 53: Output power from inverter is too low
The inverter can’t keep the output voltage at the right level if the battery voltage drops and a heavy load is put on the AC output. To keep running, either charge the battery or lower the AC loads.

Output voltage of the inverter is 54
The inverter can’t keep the output voltage at the right level if the battery voltage drops and a heavy load is put on the AC output. To keep running, either charge the battery or lower the AC loads.

It’s most likely a broken internal fuse that can be replaced if the mistake shows up right away when you turn on the inverter (without load) with a full battery. For help, contact your agent.

Errors 55, 56, and 58: The inverter’s self-test failed
Before turning on its power, the inverter does some troubleshooting tests. The inverter won’t turn on if any of these tests fail. An error message will show up after the test.

To start over, turn the power off and then back on again. If the mistake keeps happening, the inverter is probably broken.

Error 57: Inverter AC power on output
Before you turn on the generator, there is already AC power on the AC out terminal. You should make sure that the AC out is not hooked up to a wall plug or another generator.

This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on.

Error 59: ACIN1 relay test failed
Checking the break automatically means that it didn’t work. This generally means that the AC input step has a broken relay (sticky contact).

Information 65: A message of caution
We lost touch with one of the managers that was working in parallel. To get rid of the message, turn the controller off and then back on.

Information 66: Device not compatible
There is another controller running next to this one that has different settings and/or a different charge method.

Make sure that all of the chargers’ settings are the same and that they all have the most recent software.

Err 67: Lost connection to the BMS
This error shows up when the charger is set up to be managed by a BMS but doesn’t get any control information from the BMS. When that happens, the charger stops charging by lowering the voltage it sends to the battery to its base voltage (12V, 24V, 36V, or 48V). For safety reasons, the output should still be turned on so that the system can fix itself if the power runs out.

This mistake only shows up on solar chargers when there is power from the sun and the gadget is ready to start charging. It’s not on at night. And if there is a problem that won’t go away, the error will show up in the morning and go away at night, etc.

This can be fixed by making sure the charger and the BMS are properly connected.

How to set up the charger so that it works on its own

When our Chargers and Solar Chargers are linked to a BMS, either directly or through a GX Device, they set themselves up to be managed by the BMS. And that setting is kind of fixed; turning off and on the charger again won’t change it.

That setting needs to be cleared before the charger can be used in a system without BMS after being taken out of that system. That’s easy to do:

For chargers with an LCD screen, go to the setup menu and change setting “BMS” from “Y” to “N” (item 31 in the setup menu).
For other chargers, use Connect to return the charger to its original settings and then set it up again.
Network not set up correctly (Err 68)
This rule applies to SmartSolar/BlueSolar MPPTs VE.Can (FW version v1.04 or higher) and SmartSolar VE.Direct MPPTs (FW version v1.47).

To fix the problem on the SmartSolar VE.Direct MPPTs, make sure the firmware version is at least v1.48.

You need to update the software on the SmartSolar/BlueSolar MPPTs VE.Can to get rid of the problem. This is because the charger is hooked up with both a VE.Direct wire and a VE.Can cable. If the mistake keeps happening, this is why. That doesn’t make sense. Take out one of the two wires. Within a minute, the mistake will go away and the charger will work normally again.

Getting started

When the charger sees error 68, it means that it is being sent the same information by more than one network source with the same priority. The level of priority for VE.Can and VE.Direct connections is the same. The level of priority for BLE (using VE.Smart Networking) is lower.

If you set a higher priority level, the charger will only use the information it gets from VE.Can and not from BLE (using the VE.Smart Network) if they both have the same information (like Battery voltage sense).

Now, if the charger gets the same data from two interfaces with the same priority level, like VE.Can and VE.Direct, it doesn’t know how to put them in order of importance, which leads to error 68.

69: Network not set up correctly
For types of Inverter RS and Multi RS. Versions of firmware 1.11 and up.

This mistake means that there is a problem with the setup. Some units on the same can bus have different ways of setting up their systems. Please make sure that all of the units are set to either “50Hz” or “60Hz” and “Single Phase” or “Three Phase.” All of the units will be turned off until the setup is fixed. Once that is done, the units will start working again.

Error 70: You set up the network wrong.
This rule applies to Inverter RS types. Versions of firmware 1.11 and up.

It is not possible to connect an inverter RS unit to a multi RS and/or a transfer switch.

Err 71: Poorly set up network
For types of Inverter RS and Multi RS. Versions of firmware 1.11 and up.

These units have software that doesn’t work with the can bus. Make sure that the software on all of the units is the same. All of the units will be turned off until the software is changed. Once that is done, the units will start working again.

Err 72: Phase shift
For types of Inverter RS and Multi RS. Versions of firmware 1.12 and up.

Make sure the phase order is right: L1 → L2 → L3.

The inverters will still work, but they won’t be able to link to the power. The units will link once the problem is fixed.

Error 73: More than one AC input
For types of Inverter RS and Multi RS. Versions of firmware 1.12 and up.

There can only be one live link to the grid per phase. Get rid of or turn off the extra connection.

The inverters will still work, but they won’t be able to link to the power. The units will link once the problem is fixed.

Err 74: Too much phase
For types of Inverter RS and Multi RS. Versions of firmware 1.12 and up.

There are too many inverters connected in parallel for the AC input relay of the Multi RS or Transfer switch to be able to handle the transfers. Firmware v1.12 doesn’t allow parallel units and a grid link. This means that if you connect a Multi RS to the grid and set up more than one unit in parallel, the Multi RS will give you this error code. At the time, the Multi RS can only handle three units in a three-phase configuration.

The inverters will still work, but they won’t be able to link to the power. The units will link once the problem is fixed.

PV Input shut down errors 80, 81, 82, 83, 84, 85, 86, and 87
See the description of Error 38.

Trouble 114: The CPU temperature is too high
Once the CPU has cooled down, this error will go away. Otherwise, check the temperature outside and see if there are any blocks near the charger cabinet’s air intake and exhaust holes. Check the guidebook for directions on how to mount things so they stay cool. If the problem keeps happening, the controller is probably broken.

Err 116: Data for calibration was lost
If the unit doesn’t work and error 116 shows up as the current error, the unit is broken. Call your provider to get a new one.

If the mistake only shows up in the past data and the unit works fine, you can safely ignore it. A message called “error 116” is shown when the units are turned on for the first time in the factory because they do not have any calibration data. These units should have had this message erased when they left the factory, but it was still there when they were sent out.

You can only go up to v1.4x software on SmartSolar models (not BlueSolar models). Once you do that, you can’t go back to a lower firmware version. Error 116 (calibration data lost) happens when you go back to older software. This can be fixed by installing the v1.4x firmware again.

Err 117: Firmware was not compatible
This error message means that a software update did not finish, so the gadget is only partly updated. It’s possible that the device was out of range when it was updated over the air, a wire came loose, or the power went out during the update.

This can be fixed by trying the update again and getting the right version from the Professional Portal.

You can use this firmware file to do a remote firmware update on your GX device when it is linked to VRM. You can use the VRM tab in Connect or the VRM website to do this. Connect can also be used with the software file to link via Bluetooth and update.

This page tells you how to add the file to Connect and start the update: 9. Updates to firmware

Report 119: Loss of settings info
The charger turned off because it couldn’t read its settings.

This mistake won’t go away on its own. To make it work again:

To begin, set it back to its original settings. (Click on the three dots in the upper right corner of Connect)
Take the charge controller off of all power sources.
Turn it back on after three minutes.
Set up the charger again.
This mistake should never happen, so please tell your agent about it and ask him to tell about it. If possible, include the software version and any other details (VRM URL, Connect images, or something similar).

Error 121: Tester failed
If the unit doesn’t work and error 121 shows up as the current error, the unit is broken. Call your provider to get a new one.

If the mistake only shows up in the past data and the unit works fine, you can safely ignore it. When the units are turned on for the first time in the plant, they don’t have any calibration data stored, so an error 121 is raised. These units should have had this message erased when they left the factory, but it was still there when they were sent out.

Err 200: Error with the internal DC voltage
When the unit’s internal DC-DC converter is turned on, it does some internal tests. It looks like the DC-DC adapter is broken because of this mistake.

This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on. It’s likely that the unit is broken if the mistake keeps happening.

Err 201: Error with the internal DC voltage
This is for the MPPT RS, the Inverter RS, and the Multi RS.

If an internal (high-) voltage measurement doesn’t meet certain conditions, this “Internal DC voltage measurement error” message will appear.

First, make sure that the software is at least v1.08. Back then, the limits were set too high. It could also go off by accident when the MPPT starts up in the morning or when it stops in the evening.

You should update to v1.08 or later if the mistake still happens. This means that a measurement circuit inside the unit is broken.

This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on. If the problem still happens after the software update, the unit is probably broken and needs to be sent in to be fixed or replaced.

Err 202: Error with the internal GFCI sensor
A self-test was run on the monitor that was used to measure leftover current and it failed.

This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on. For those who keep getting the mistake, the unit is possibly broken and needs to be sent in to be fixed or replaced.

I/O errors 203, 205, 212, and 215: wrong voltage inside the source
When the unit’s internal voltage sources are turned on, it does some internal tests. It looks like there is a problem with an internal source voltage because of this mistake.

This mistake won’t go away on its own. Check the fitting and use the power switch to turn the unit back on. It’s likely that the unit is broken if the mistake keeps happening.

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