The Felicity IVEM8048-LV is a Inverter unit covered by a shared firmware family that includes 2 variants. The error codes listed below apply to every variant in this family — IVEM8048-LV, IVEM8048. 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.
Bus voltage is too high.
AC Surge or internal components failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Bus voltage is too low.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Bus soft start fail.
Internal components failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Inverter soft start fail.
Internal components failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Over current or surge detected by Software.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Over current or surge detected by hardware.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Output voltage is too low.
Reduce the connected load. Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Output voltage is too high.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Output short circuited.
Wiring not connected well or abnormal load.
Check if wiring is connected well and remove abnormal load.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Overload time out.
Connected load exceeds inverter capacity for an extended time.
Reduce the connected load by switching off some equipment.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Battery voltage is too high.
Battery spec or quantity does not meet requirements.
Check if spec and quantity of batteries are meet requirements.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Over current happen at DC/DC circuit.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38PV voltage is too high.
Too many PV modules in series.
Reduce the number of PV modules in series.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Short circuited happen at PV port.
Wiring not connected well.
Check if wiring is connected well.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38PV power is abnormal.
Excessive PV power input.
Reduce the number of PV modules.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Over current happen at PV port.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Fan is locked.
Fan wiring problem or fan failure.
Check if wiring is connected well. Replace the fan.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Over temperature happen at PV circuit.
The temperature of internal PV component is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Over temperature happen at Convert L circuit.
The temperature of Convert L battery converter component is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Over temperature happen at INV circuit.
The temperature of internal INV component is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38The inner temperature over.
The inner temperature is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38DCDC current sensor failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38No.2 DCDC current sensor failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Inverter current sensor failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38OP current sensor failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38Sharing current sensor failed.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 38The AC input and output wires are inversely connected.
AC input and output wiring reversed, possibly during parallel installation.
1. Please check AC input and output wires are connected correctly. 2. if this error happens during parallel installation, please check wires connection. if they are connected correctly, please funish parallel installation first, and then restart inverters. 3. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Single unit is installed to parallel system.
Single unit configured into a parallel system, or wiring problem during parallel installation.
1. Please check if single unit is installed to parallel system. 2. if this error happens during parallel installation, please check wires connection. if they are connected correctly, please funish parallel installation first, and then restart inverters. 3. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39DC/DC soft start fail.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Over temperature happen at convert H circuit.
The temperature of internal convert H component is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Over temperature happen at LLC TX.
The temperature of internal DC/DC TX is over the limitation.
Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Over current happen at LLC circuit.
Restart the unit, if the error persists, contact the repair center.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39CAN data loss.
Communication failure between paralleled inverters.
1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Host data loss.
Communication failure between paralleled inverters.
1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Synchronization data loss.
Communication failure between paralleled inverters.
1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Current feedback into the inverter is detected.
Reverse-connected L/N cables, or sharing cables not connected/connected across phases in three-phase setup.
1. Restart the inverter. 2. Check if L/N cables are not connected reversely in all inverters. 3. For parallel system in single phase, make sure the sharing cables are connected in all inverters. For supporting three-phase system, make sure the sharing cables are connected in the inverters in the same phase, and disconnected in the inverters in different phases. 4. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39The firmware version of each inverter is not the same.
Mismatched firmware versions across paralleled inverters.
1. Update all inverter firmware to the same version. 2. Check the version of each inverter via LCD setting and make sure the CPU versions are same. if not, please contact your installer to provide the firmware to update. 3. After updating, if the problem still remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39The output current of each inverter is different.
Sharing cable connection issue between paralleled inverters.
1. Check if sharing cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39AC output mode setting is different.
Inconsistent AC output mode (program 28) settings across inverters.
1. Switch off the inverter and check LCD setting program 28. 2. For parallel system in single phase, make sure no 3P1, 3P2 or 3P3 is set on program 28. For supporting three-phase system, make sure no "PAL" is set on program 28. 3. if the problem remains, please contact your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 39Warning: Fan is locked. Beep three times every second.
Fan wiring not connected well or fan failure.
Check if the Fan's wiring connected well. Replace the fan.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Warning: Overload. Beep twice every second.
Connected load exceeds the inverter capacity.
Reduce the loads.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Warning: Low battery. Beep once every second.
The battery voltage is too low.
It should be charging.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37BMS firmware version is not matched.
BMS firmware version mismatch.
Upgrade the firmware of BMS.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37BMS doesn't allow inverter to charge battery.
BMS has blocked charging.
Inverter will stop charging battery automatically.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37BMS doesn't allow inverter to discharge battery.
BMS has blocked discharging.
Inverter will stop discharging battery automatically.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37BMS require inverter to charge battery.
BMS has requested charging.
Inverter will charge battery automatically.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37BMS detect something wrongs happened (range of codes 54 through 65).
BMS has detected an internal fault.
If the code is keeping for long time, please contact with your installer.
FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf · page 37Write 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.