The Felicity SCCM3024-III is a Charge controller unit covered by a shared firmware family that includes 7 variants. The error codes listed below apply to every variant in this family — SCCM3024-III, SCCM4524-III, SCCM4548-III, SCCM6048-III and 3 others. If your unit's exact model number isn't shown in the title but is listed in the "also covers" tags, this is the correct reference page.
Each row below shows an error code, its severity, and a brief description. Click any row to expand the full cause and the recommended fix. The severity dot tells you whether the unit will keep operating (warning), derate (fault), or trip offline (critical). For codes that require an authorized service partner, the recommended-fix block says so explicitly.
Charging current exceeds the controller's safe operating limit.
Charging current has exceeded the maximum safe threshold of the charge controller, possibly due to a fault in the charging circuit or excessive PV input.
1. Restart the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18The charge controller's internal temperature has exceeded its safe operating range.
Controller is operating in a hot environment or has insufficient airflow/ventilation, causing the heatsink temperature to exceed safe limits.
1. Keep the charger in the cool environment. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18The connected battery voltage has dropped below the acceptable minimum threshold.
Loose, broken, or improperly connected battery wiring, or a deeply discharged/damaged battery.
1. Check the battery wire connection. 2. if the wire connection is ok, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Battery voltage has exceeded the controller's high-voltage disconnect threshold.
Battery overvoltage condition, possibly due to incorrect battery system voltage setting or external charging source raising battery voltage above safe limits.
1. Reconnect the battery to the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Solar (PV) input voltage exceeds the controller's maximum allowable input voltage (140V or 190V depending on model).
PV array open-circuit voltage exceeds the controller's maximum solar input voltage rating (95V for 30A/45A models with 12V/24V; 145V for 45A/60A/80A 48V models; 165V for 100A/120A models).
1. Please check the voltage of the solar panel, it should be less than 140V or 190V. 2. if the voltage is ok, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Detected battery temperature is below the safe charging range.
Battery ambient temperature is too low, or remote temperature sensor (RTS) is faulty, disconnected, or reporting incorrect values.
1. Check your remote temperature sensor and your battery ambient temperature. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Detected battery temperature exceeds the safe charging range.
Battery ambient temperature is too high, or remote temperature sensor (RTS) is faulty, disconnected, or reporting incorrect values.
1. Check your remote temperature sensor and your battery ambient temperature. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Detected battery voltage does not match the configured/rated battery voltage of the system.
Battery is incorrectly wired, has wrong rated voltage configuration (12V/24V/48V), or auto-detection has failed.
1. Check that the battery is properly connected or check battery rated voltage is set correctly. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18The MOSFET (power switching transistor) inside the controller is damaged.
Internal MOSFET hardware failure, often caused by overcurrent, short circuit, or surge events.
1. Restart the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18The internal relay has a short-circuit fault.
Internal relay hardware failure, where the relay contacts have welded or shorted closed.
1. Restart the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Parallel-operation fault: a problem has been detected in the parallel connection between charge controllers.
Parallel communication or wiring fault between SCCM-III controllers connected in parallel (note: SCCM3024-III and SCCM4524-III do not support parallel operation).
1. Restart the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18EEPROM (non-volatile parameter memory) read/write fault.
Internal EEPROM corruption or hardware failure preventing the controller from reading/writing stored configuration.
1. Restart the charger. 2. if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18The LCD display shows nothing / is blank.
Loose or disconnected battery wiring depriving the controller of power, or display hardware fault.
1. Check battery wire connection. 2. Push the button, if the problem remains, please contact your installer.
felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf · page 18Write down the exact code shown on the display, what the unit was doing when it appeared (charging, discharging, idle, grid-tied), and any LEDs or audible alarms. The same code can have different fixes depending on context.
Find the code in the list below and read the cause + recommended fix. Most warning-level codes can be cleared by following the listed action — usually reducing load, checking wiring, or restarting the unit.
Each code shows the source manual filename and page number. Open that exact page in the official manual to verify model-specific notes (firmware version, parallel-config notes, regional variants) before acting.
If a fix requires opening the enclosure or accessing terminals, disconnect AC input, DC PV, and battery in that order. Wait at least 60 seconds for capacitors to discharge before touching any conductors.
Critical codes (short-circuit, IGBT failure, BMS hardware error) should not be cleared by end users. Note the code, model number, and source manual page, then contact an authorized service partner.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.