Voltronic SCC-MPPT Solar Charge Controller Error Codes: Causes & Fixes (4 codes)

This is the complete fault table for the Voltronic SCC-MPPT Solar Charge Controller Charge controller family — 4 codes shared by 3 model numbers, transcribed from the official manual. On this Voltronic device, a fault code means the unit has entered protection and stopped normal operation; a warning leaves it running. The exact indication (LED pattern or display code) is listed per code below.

Also coversSCC-MPPT 300WSCC-MPPT 600WSCC-MPPT 850W

Last checked against the official manuals on July 27, 2026.

How to read the severity labels

  • Fault(4)— operation stops until cleared

Fault codes (4)operation stops until cleared

E1Fault

Solar input voltage is too high.

Fault

Fault code E1 shown on the display with the fault icon on: Solar input voltage is too high..

CauseSolar input voltage is too high.

Recommended fixCheck if solar wiring is correct. And then check solar input voltage.

Source:SCC-MPPT_manual.pdf· page 6

F0Fault

Battery wires are not connected well, or battery defect.

Fault

Fault code F0 shown on the display with the fault icon on: Battery wires are not connected well, or battery defect..

CauseBattery wires are not connected well. Battery defect.

Recommended fixCheck if battery wires are properly connected. Replace battery.

Source:SCC-MPPT_manual.pdf· page 6

F1Fault

Battery wires are not connected well, battery defect, or charge controller defect.

Fault

Fault code F1 shown on the display with the fault icon on: Battery wires are not connected well, battery defect, or charge controller defect..

CauseBattery wires are not connected well. Battery defect. Charge controller defect.

Recommended fixCheck if battery wires are properly connected. Replace battery. If the charge controller is defective, replace the unit.

Source:SCC-MPPT_manual.pdf· page 6

F2Fault

Overload.

Fault

Fault code F2 shown on the display with the fault icon on: Overload..

CauseOverload.

Recommended fixRemove excess loads.

Source:SCC-MPPT_manual.pdf· page 6

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Common questions about SCC-MPPT Solar Charge Controller error codes

What is the difference between a fault and a warning on the SCC-MPPT Solar Charge Controller?
A fault puts the unit into protection and stops normal operation — this page lists 4 of them for the SCC-MPPT Solar Charge Controller. The SCC-MPPT Solar Charge Controller manual defines no separate warning table — every listed code stops operation. Resolve the cause of a fault before restarting; warnings can usually be cleared while the unit runs.
Which model numbers does this page cover?
The SCC-MPPT Solar Charge Controller shares its firmware and fault table with 2 other model numbers: SCC-MPPT 300W, SCC-MPPT 600W, SCC-MPPT 850W. If your unit is any of these, every code on this page applies to it.
Where do these codes come from?
Every entry was transcribed from SCC-MPPT_manual.pdf — Voltronic's official documentation. Each row cites its source manual (and page where printed), so you can verify the wording before acting on it.

Compiled from official Voltronic user manuals. Always consult your device manual and a qualified technician before performing repairs.