IVEM8048-II

Inverter56 codes
also coversIVEM12048-IIIVEM 8K-12K Series II
42 Fault 14 Warning
F01Bus voltage is too high.Fault
Description

Fault: Bus voltage is too high. Inverter cuts off output, fault LED solid on, ERROR icon shown on LCD.

Cause

AC Surge or internal components failed.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 42
F02Bus voltage is too low.Fault
Description

Fault: Bus voltage is too low.

Cause

Internal bus voltage abnormally low.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F03Bus soft start fail.Fault
Description

Fault: Bus soft start fail.

Cause

Internal components failed.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F04Inverter soft start fail.Fault
Description

Fault: Inverter soft start fail.

Cause

Internal components failed.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F05Over current or surge detected by Software.Fault
Description

Fault: Over current or surge detected by Software.

Cause

Software-detected over current or surge condition.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F06Over current or surge detected by hardware.Fault
Description

Fault: Over current or surge detected by hardware.

Cause

Hardware-detected over current or surge condition.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F07Output voltage is too low.Fault
Description

Fault: Output voltage is too low.

Cause

Output voltage below acceptable range, possibly due to overload.

Recommended fix

Reduce the connected load. Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F08Output voltage is too high.Fault
Description

Fault: Output voltage is too high.

Cause

Output voltage exceeds acceptable range.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F09Output short circuited.Fault
Description

Fault: Output short circuited.

Cause

Short circuit on AC output wiring or connected load.

Recommended fix

Check if wiring is connected well and remove abnormal load.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F10Overload time out.Fault
Description

Fault: Overload time out.

Cause

Connected load has exceeded the inverter's overload capacity for too long.

Recommended fix

Reduce the connected load by switching off some equipment.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F11Battery voltage is too high.Fault
Description

Fault: Battery voltage is too high.

Cause

Battery voltage exceeds the inverter's allowed maximum.

Recommended fix

Check if spec and quantity of batteries are meet requirements.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F12Over current happen at DC/DC circuit.Fault
Description

Fault: Over current happen at DC/DC circuit.

Cause

Over current detected in the DC/DC converter circuit.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F13PV voltage is too high.Fault
Description

Fault: PV voltage is too high.

Cause

PV array open-circuit voltage exceeds the inverter's maximum input voltage.

Recommended fix

Reduce the number of PV modules in series.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F14Short circuited happen at PV port.Fault
Description

Fault: Short circuited happen at PV port.

Cause

Short circuit detected at the PV input port or wiring.

Recommended fix

Check if wiring is connected well.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F15PV power is abnormal.Fault
Description

Fault: PV power is abnormal.

Cause

PV input power exceeds the inverter's allowed maximum.

Recommended fix

Reduce the number of PV modules.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F16Over current happen at PV port.Fault
Description

Fault: Over current happen at PV port.

Cause

Over current detected at the PV input port.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F17Fan is locked.Fault
Description

Fault: Fan is locked.

Cause

Fan wiring not connected well or fan failure.

Recommended fix

Check if wiring is connected well. Replace the fan.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F18Over temperature happen at PV circuit.Fault
Description

Fault: Over temperature happen at PV circuit.

Cause

The temperature of internal PV component is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F19Over temperature happen at Convert L circuit.Fault
Description

Fault: Over temperature happen at Convert L circuit.

Cause

The temperature of Convert L battery converter component is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F20Over temperature happen at INV circuit.Fault
Description

Fault: Over temperature happen at INV circuit.

Cause

The temperature of internal INV component is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 43
F21The inner temperature over.Fault
Description

Fault: The inner temperature over.

Cause

The inner temperature is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F22DCDC current sensor failed.Fault
Description

Fault: DCDC current sensor failed.

Cause

DCDC current sensor failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F23No.2 DCDC current sensor failed.Fault
Description

Fault: No.2 DCDC current sensor failed.

Cause

Second DCDC current sensor failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F24Inverter current sensor failed.Fault
Description

Fault: Inverter current sensor failed.

Cause

Inverter current sensor failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F25OP current sensor failed.Fault
Description

Fault: OP current sensor failed.

Cause

Output current sensor failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F26Sharing current sensor failed.Fault
Description

Fault: Sharing current sensor failed.

Cause

Current-sharing sensor failure (parallel system).

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F27The AC input and output wires are inversely connected.Fault
Description

Fault: The AC input and output wires are inversely connected.

Cause

AC input and output wires connected reversely.

Recommended fix

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.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F28Single unit is installed to parallel system.Fault
Description

Fault: Single unit is installed to parallel system.

Cause

A single unit is detected as installed in a parallel system.

Recommended fix

1. Please check if single unit is installed to parallel system. 2. if this error happens during parallel installation, please check wires connectiotn. if they are connected correctly, please funish parallel installation first, and then restart inverters. 3. if the problem remains, please contact your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F29DC/DC soft start fail.Fault
Description

Fault: DC/DC soft start fail.

Cause

DC/DC converter soft start failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F31Over temperature happen at convert H circuit.Fault
Description

Fault: Over temperature happen at convert H circuit.

Cause

The temperature of internal convert H component is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F32Over temperature happen at LLC TX.Fault
Description

Fault: Over temperature happen at LLC TX.

Cause

The temperature of internal DC/DC TX is over the limitation.

Recommended fix

Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F33Over current happen at LLC circuit.Fault
Description

Fault: Over current happen at LLC circuit.

Cause

Over current detected in the LLC circuit.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F34DC/DC hardware overflows.Fault
Description

Fault: DC/DC hardware overflows.

Cause

DC/DC converter hardware overflow.

Recommended fix

Restart the unit, if the eror happens again, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F35Overvoltage occurs in BUS.Fault
Description

Fault: Overvoltage occurs in BUS.

Cause

AC surge or PV surge or internal components failed.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F40CAN data loss.Fault
Description

Fault: CAN data loss.

Cause

CAN communication data loss between parallel inverters.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F41Host data loss.Fault
Description

Fault: Host data loss.

Cause

Host data loss in parallel communication.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F42Synchronization data loss.Fault
Description

Fault: Synchronization data loss.

Cause

Synchronization data loss in parallel communication.

Recommended fix

1. Check if communication cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 44
F43Current feedback into the inverter is detected.Fault
Description

Fault: Current feedback into the inverter is detected.

Cause

Reverse current feedback detected at the inverter.

Recommended fix

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.

Source:IVEM8K-12K-II_compressed.pdf · page 45
F44The firmware version of each inverter is not the same.Fault
Description

Fault: The firmware version of each inverter is not the same.

Cause

Firmware versions on parallel inverters do not match.

Recommended fix

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.

Source:IVEM8K-12K-II_compressed.pdf · page 45
F45The output current of each inverter is different.Fault
Description

Fault: The output current of each inverter is different.

Cause

Output current imbalance between parallel inverters.

Recommended fix

1. Check if sharing cables are connected well and restart the inverter. 2. if the problem remains, please contact your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 45
F46AC output mode setting is different.Fault
Description

Fault: AC output mode setting is different.

Cause

AC output mode setting (LCD program 28) does not match across parallel units.

Recommended fix

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.

Source:IVEM8K-12K-II_compressed.pdf · page 45
F47Generator current sensor failed.Fault
Description

Fault: Generator current sensor failed.

Cause

Generator current sensor failure.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:IVEM8K-12K-II_compressed.pdf · page 45
W01Fan is locked.Warning
Description

Warning: Fan is locked. Beep three times every second.

Cause

Fan wiring not connected well or fan failure.

Recommended fix

Check if the Fans wiring connected well. Replace the fan.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W02Overload.Warning
Description

Warning: Overload. Beep twice every second.

Cause

Connected load exceeds the inverter capacity.

Recommended fix

Reduce the loads.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W03Low battery.Warning
Description

Warning: Low battery. Beep once every second.

Cause

Battery voltage is too low.

Recommended fix

The battery voltage is too low, it should be charging.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W04Grid anomaly.Warning
Description

Warning: Grid anomaly. Grid icon blinking.

Cause

Grid input is over voltage or over frequency.

Recommended fix

Check whether the input is overvoltage or overfrequency.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W05Three-phase input missing phase.Warning
Description

Warning: Three-phase input missing phase. Fault LED flashing.

Cause

Three-phase mains input is not normal (missing phase).

Recommended fix

Check whether the three-phase mains input is normal.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W06The three-phase parallel is abnormal.Warning
Description

Warning: The three-phase parallel is abnormal. Fault LED flashing.

Cause

Three-phase parallel communication is abnormal.

Recommended fix

Verify that the three-phase communication is normal.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W07Generator anomaly.Warning
Description

Warning: Generator anomaly. Generator icon blinking.

Cause

Generator input is over voltage or over frequency.

Recommended fix

Check whether the input is overvoltage or overfrequency.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W08Three-phase parallel generator input phase deficiency.Warning
Description

Warning: Three-phase parallel generator input phase deficiency. Fault LED flashing.

Cause

Three-phase mains input is not normal (missing phase) on generator input.

Recommended fix

Check whether the three-phase mains input is normal.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W50BMS firmware version is not matched.Warning
Description

Warning: BMS firmware version is not matched.

Cause

BMS firmware version mismatch.

Recommended fix

Upgrade the firmware of BMS.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W51BMS doesn't allow inverter to charge battery.Warning
Description

Warning: BMS doesn't allow inverter to charge battery. Inverter will stop charging battery automatically.

Cause

BMS has prohibited charging the battery.

Recommended fix

Inverter will stop charging battery automatically.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W52BMS doesn't allow inverter to discharge battery.Warning
Description

Warning: BMS doesn't allow inverter to discharge battery. Inverter will stop discharging battery automatically.

Cause

BMS has prohibited discharging the battery.

Recommended fix

Inverter will stop discharging battery automatically.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W53BMS require inverter to charge battery.Warning
Description

Warning: BMS require inverter to charge battery. Inverter will charge battery automatically.

Cause

BMS is requesting the inverter to charge the battery.

Recommended fix

Inverter will charge battery automatically.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W54-W65BMS detect something wrongs happened.Warning
Description

Warning: BMS detect something wrongs happened (range covers BMS internal alarm codes 54 through 65).

Cause

BMS has detected an internal fault or abnormal condition.

Recommended fix

If the code is keeping for long time, please contact with your installer.

Source:IVEM8K-12K-II_compressed.pdf · page 42
W80The BMS communication is abnormal.Warning
Description

Warning: The BMS communication is abnormal. Beep once every second.

Cause

BMS communication cable is not properly connected or communication failure.

Recommended fix

Check whether the BMS communication cable is connected.

Source:IVEM8K-12K-II_compressed.pdf · page 42

Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.