MOS overtemperature.
C07 on a Felicity unit indicates: MOS overtemperature.. It is a fault-severity event that can appear on 17 different devices in the Felicity catalog. The same code may have slightly different recommended fixes depending on the device — the per-device sections below show the exact wording from each device's official manual.
Fault codes stop normal operation but the unit may attempt to recover. Common causes are out-of-range conditions (voltage, current, temperature) that require checking inputs and outputs before restart.
C07 is triggered when the unit's protection or monitoring logic detects the specific condition described above. The exact trigger depends on the device — see the per-device sections for the official manual entry for each.
MOSFET over-temperature fault. LED pattern: LED1 ON, LED2 ON, LED3 ON, LED4 OFF.
1. The inner temperature is over the limitation. 2. The ambient temperature may be too high.
Check whether the ambient temperature is too high.
Felicitysolar FLA12100 12.5Kwh Battery Energy Storage System User Manual.pdf · page 1MOSFET temperature is too high.
1. The inner temperature is over the limitation. 2. Ambient temperature is too high.
Check whether the ambient temperature is too high.
Felicitysolar FLA48200 48V 200Ah 10kWh Lithium Phosphate Battery User Manual.pdf · page 12MOSFET (power switch) temperature is over the protection limit.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient/inner temperature; allow the unit to cool. Verify ventilation and that ambient temperature is within the operating range.
6peluqppy_66a93554057c8.pdf · page 12MOS overtemperature.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
FLA48250-EU_Manual.pdf · page 8MOSFET (BMS power switch) over-temperature protection.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient temperature / improve ventilation; restart the unit. if the error persists, return to repair center.
felicitysolar FLA48500 LiFePO4 Battery System for Households User Guide.pdfMOS (MOSFET) overtemperature. Internal MOSFET temperature exceeded the upper limit.
1. The inner temperature is over the limitation (Innentemperatur über der Grenze). 2. Ambient temperature may be too high.
Check whether the ambient temperature is too high. Improve ventilation; allow the unit to cool before restarting. Operating range: -20 deg C to +55 deg C.
Benutzerhandbuch - Felicity FLS48100SG2.pdfMOSFET (BMS power switch) over-temperature protection.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient temperature / improve ventilation; restart the unit. if the error persists, return to repair center.
HE-GF-FLA-48500 Manual_20250327_EN.pdfMOSFET / BMS power-stage over-temperature fault displayed on the LCD BMS fault code / flag screen (section 4.4).
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high. (Per section 1.3 item 13 the unit must not be installed below 0 degC or over 55 degC, or above 80% humidity; charging temperature range per section 2.3 is 0-55 degC.).
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high. Stop charging / discharging, let the unit cool, and improve ventilation.
358-010291-07.pdf · page 8MOSFET (power switch) temperature is above the operating limit.
Internal temperature is over the limitation; ambient temperature may be too high.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Manual-LPBF48200-H.pdf · page 101. The inner temperature is too high. 2. Check whether the ambient temperature is too high.
Felicitysolar LPBF48350 17.5kWh 48V Solar Battery Pack with BMS User Guide.pdfThe inner temperature is over the limitation. Check whether the ambient temperature is too high.
Check whether the ambient temperature is too high; allow the unit to cool. if the error persists, return to repair center.
LUX-E-48100LG03-Lithium-Battery-User-Guide.pdf · page 121. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
LUX-E-48200LG03-Lithium-Battery-User-Guide.pdf · page 121. The inner temperature is over the limitation. 2. Ambient temperature may be too high.
Check whether the ambient temperature is too high.
LUX-E-48230.250LG03-Lithium-Battery-User-Guide.pdfMOS overtemperature.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
LUX-X-48050LG01-low-voltage-battery-user-guide.pdf · page 17MOSFET (power switch) temperature has exceeded the upper protection limit.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient temperature and improve ventilation; if the error persists, return to repair center.
LUX-X-48100LG01-Litium-Battery-User-Guide.pdf · page 17MOSFET (power switch) temperature has exceeded the upper protection limit. Note: this code is listed twice in the manual's fault table.
1. The inner temperature is over the limitation. 2. Check whether the ambient temperature is too high.
Reduce ambient temperature and improve ventilation; if the error persists, return to repair center.
358-S010024-03LUX-X-48100LG01-User-manual_compressed.pdf · page 23The inner temperature is over the limitation. Check whether the ambient temperature is too high.
Check whether the ambient temperature is too high; allow the unit to cool. if the error persists, return to repair center.
LUX-Y-4828048300LG01-Lithium-Battery-User-Guide.pdf · page 8Compiled from official Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.