CauseAC Surge or internal components failed.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
Felicity IVEM8048-LV Error Codes: Causes & Fixes (47 codes)
This is the complete fault table for the Felicity IVEM8048-LV Inverter family — 47 codes shared by 2 model numbers, transcribed from the official manual. On Felicity units, a fault code means the unit has cut its output and the red LED stays solid; a warning flashes the red LED while the unit keeps running.
Also coversIVEM8048
Last checked against the official manuals on July 10, 2026.
How to read the severity labels
- Fault(39)— output stops · red LED solid
- Warning(8)— unit keeps running · red LED flashing
Fault codes (39)output stops · red LED solid
CauseThe internal DC bus voltage fell below its operating range while running. The bus is regulated entirely inside the unit, so a persistent low reading points to an internal conversion-stage fault rather than external wiring.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseInternal components failed.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseInternal components failed.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseThe control software measured a current or surge on the power stage beyond its protection limit and shut down. The software trip catches sustained overcurrent, as opposed to the instantaneous hardware trip of F06.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseA hardware protection circuit tripped on overcurrent or surge at the power stage. This comparator acts independently of the firmware and reacts to fast transients such as inrush or an AC surge.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseConnected load is too high or internal failure.
Recommended fixReduce the connected load. Restart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseInternal failure causing high output voltage.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseWiring not connected well or abnormal load.
Recommended fixCheck if wiring is connected well and remove abnormal load.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseConnected load exceeds inverter capacity for an extended time.
Recommended fixReduce the connected load by switching off some equipment.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseBattery spec or quantity does not meet requirements.
Recommended fixCheck if spec and quantity of batteries are meet requirements.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe DC/DC converter stage between the battery and the internal bus drew more current than its protection limit allows.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseToo many PV modules in series.
Recommended fixReduce the number of PV modules in series.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseWiring not connected well.
Recommended fixCheck if wiring is connected well.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseExcessive PV power input.
Recommended fixReduce the number of PV modules.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseCurrent flowing in from the PV array exceeded the charge stage's protection limit.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseFan wiring problem or fan failure.
Recommended fixCheck if wiring is connected well. Replace the fan.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe temperature of internal PV component is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe temperature of Convert L battery converter component is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe temperature of internal INV component is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe inner temperature is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe DC/DC current sensor returned an out-of-range or implausible reading, so the control board can no longer trust that stage's current measurement.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe second DC/DC current sensor returned an out-of-range or implausible reading, so the control board can no longer trust that channel's current measurement.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe inverter-stage current sensor returned an out-of-range or implausible reading, so the control board can no longer trust its inverter current measurement.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe output current sensor returned an out-of-range or implausible reading, so the control board can no longer trust its output-current measurement.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseThe current-sharing sensor used to balance paralleled units returned an out-of-range or implausible reading, so the inverter can no longer verify how load current is being shared.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 38
CauseAC input and output wiring reversed, possibly during parallel installation.
Recommended fix1. 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.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseSingle unit configured into a parallel system, or wiring problem during parallel installation.
Recommended fix1. 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.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseThe DC/DC converter failed to ramp up to its working voltage during soft start, which indicates an internal component fault rather than a wiring problem.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseThe temperature of internal convert H component is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseThe temperature of internal DC/DC TX is over the limitation.
Recommended fixCheck whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseThe LLC resonant converter (the isolated DC link inside the unit) drew current above its protection limit.
Recommended fixRestart the unit, if the error persists, contact the repair center.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseCommunication failure between paralleled inverters.
Recommended fix1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseCommunication failure between paralleled inverters.
Recommended fix1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseCommunication failure between paralleled inverters.
Recommended fix1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseReverse-connected L/N cables, or sharing cables not connected/connected across phases in three-phase setup.
Recommended fix1. 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.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseMismatched firmware versions across paralleled inverters.
Recommended fix1. 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.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseSharing cable connection issue between paralleled inverters.
Recommended fix1. Check if sharing cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
CauseInconsistent AC output mode (program 28) settings across inverters.
Recommended fix1. 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.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 39
Warning codes (8)unit keeps running · red LED flashing
Warning: Fan is locked. Beep three times every second.
CauseFan wiring not connected well or fan failure.
Recommended fixCheck if the Fan's wiring connected well. Replace the fan.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
Warning: Overload. Beep twice every second.
CauseConnected load exceeds the inverter capacity.
Recommended fixPower down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
Warning: Low battery. Beep once every second.
CauseThe battery voltage is too low.
Recommended fixIt should be charging.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseBMS firmware version mismatch.
Recommended fixUpgrade the firmware of BMS.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseBMS has blocked charging.
Recommended fixInverter will stop charging battery automatically.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseBMS has blocked discharging.
Recommended fixInverter will stop discharging battery automatically.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
CauseBMS has requested charging.
Recommended fixInverter will charge battery automatically.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
BMS detect something wrongs happened (range of codes 54 through 65).
CauseBMS has detected an internal fault.
Recommended fixIf the code is keeping for long time, please contact with your installer.
Source:FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf· page 37
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- All Felicity error codesSearch every device and code in the database
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Common questions about IVEM8048-LV error codes
- What is the difference between a fault and a warning on the IVEM8048-LV?
- A fault cuts the unit's output and the red LED stays solid — this page lists 39 of them for the IVEM8048-LV. A warning only flashes the red LED and the unit keeps running; there are 8 warning codes here. 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 IVEM8048-LV shares its firmware and fault table with 1 other model number: IVEM8048. 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 FelicitySolar IVEM8048-LV Single Phase Hybrid Inverter User Guide.pdf — Felicity'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 Felicity user manuals. Always consult your device manual and a qualified technician before performing repairs.