This is the complete fault table for the Felicity SCCM3024-III Charge controller family — 13 codes shared by 7 model numbers, transcribed from the official manual. On this Felicity 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.
Last checked against the official manuals on July 10, 2026.
Charging current exceeds the controller's safe operating limit.
CauseCharging current has exceeded the maximum safe threshold of the charge controller, possibly due to a fault in the charging circuit or excessive PV input.
Recommended fix1. Restart the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
The charge controller's internal temperature has exceeded its safe operating range.
CauseController is operating in a hot environment or has insufficient airflow/ventilation, causing the heatsink temperature to exceed safe limits.
Recommended fix1. Keep the charger in the cool environment. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
The connected battery voltage has dropped below the acceptable minimum threshold.
CauseLoose, broken, or improperly connected battery wiring, or a deeply discharged/damaged battery.
Recommended fix1. Check the battery wire connection. 2. if the wire connection is ok, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Battery voltage has exceeded the controller's high-voltage disconnect threshold.
CauseBattery overvoltage condition, possibly due to incorrect battery system voltage setting or external charging source raising battery voltage above safe limits.
Recommended fix1. Reconnect the battery to the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Solar (PV) input voltage exceeds the controller's maximum allowable input voltage (140V or 190V depending on model).
CausePV 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).
Recommended fix1. 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.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Detected battery temperature exceeds the safe charging range.
CauseBattery ambient temperature is too high, or remote temperature sensor (RTS) is faulty, disconnected, or reporting incorrect values.
Recommended fix1. Check your remote temperature sensor and your battery ambient temperature. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Detected battery voltage does not match the configured/rated battery voltage of the system.
CauseBattery is incorrectly wired, has wrong rated voltage configuration (12V/24V/48V), or auto-detection has failed.
Recommended fix1. Check that the battery is properly connected or check battery rated voltage is set correctly. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
The MOSFET (power switching transistor) inside the controller is damaged.
CauseInternal MOSFET hardware failure, often caused by overcurrent, short circuit, or surge events.
Recommended fix1. Restart the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
The internal relay has a short-circuit fault.
CauseInternal relay hardware failure, where the relay contacts have welded or shorted closed.
Recommended fix1. Restart the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Parallel-operation fault: a problem has been detected in the parallel connection between charge controllers.
CauseParallel communication or wiring fault between SCCM-III controllers connected in parallel (note: SCCM3024-III and SCCM4524-III do not support parallel operation).
Recommended fix1. Restart the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
EEPROM (non-volatile parameter memory) read/write fault.
CauseInternal EEPROM corruption or hardware failure preventing the controller from reading/writing stored configuration.
Recommended fix1. Restart the charger. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Detected battery temperature is below the safe charging range.
CauseBattery ambient temperature is too low, or remote temperature sensor (RTS) is faulty, disconnected, or reporting incorrect values.
Recommended fix1. Check your remote temperature sensor and your battery ambient temperature. 2. if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
The LCD display shows nothing / is blank.
CauseLoose or disconnected battery wiring depriving the controller of power, or display hardware fault.
Recommended fix1. Check battery wire connection. 2. Push the button, if the problem remains, please contact your installer.
Source:felicitysolar SCCM-III MPPT Solar Charge Controller User Guide.pdf· page 18
Send us the code on your screen and a Felicity technician will reply with the exact steps for your unit. Support is free for life — a first diagnosis never needs a callout.
Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.