This is the complete fault table for the Voltronic Galleon X9 6K-10K RT ups family — 28 codes shared by 2 model numbers, transcribed from the official manual. On this Voltronic 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 27, 2026.
Fault code 01 shown on the display; the UPS has detected a fault condition: Bus Start Fail.
CauseThe internal converter failed, so the DC bus voltage could not be boosted correctly.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Fault code 02 shown on the display; the UPS has detected a fault condition: Bus Over.
Cause1) DC bus voltage is too high because of mains input or load transient current. 2) The internal converter failed.
Recommended fix1) Shut down and restart the system to see if it happens again. 2) Contact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Fault code 03 shown on the display; the UPS has detected a fault condition: Bus Under.
CauseThe internal converter failed, so the DC bus voltage is too low.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Fault code 04 shown on the display; the UPS has detected a fault condition: Bus Unbalance.
Cause1) The load is special or abnormal, so the internal positive and negative DC bus voltages are unbalanced. 2) The internal converter failed.
Recommended fixContact the dealer.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 11 shown on the display; the UPS has detected a fault condition: Inv Start Fail.
CauseThe internal inverter failed, so the inverter voltage could not start up correctly.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 12 shown on the display; the UPS has detected a fault condition: Inv Volt High.
CauseThe internal inverter failed, so the inverter voltage is too high.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 13 shown on the display; the UPS has detected a fault condition: Inv Volt Low.
CauseThe internal inverter failed, so the inverter voltage is too low.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 14 shown on the display; the UPS has detected a fault condition: Output Short.
CauseShort circuit occurs on the UPS output.
Recommended fixRemove short circuit.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 1A shown on the display; the UPS has detected a fault condition: NegPower.
CauseUPS output power is negative. It means there is energy feedback into the internal of UPS from output. It may be caused by regenerative load or current control failure in the parallel system.
Recommended fixContact the dealer.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 21 shown on the display; the UPS has detected a fault condition: Batt SCR Short.
CauseThe internal battery SCR is failed and short.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 24 shown on the display; the UPS has detected a fault condition: Inv Rly Short.
CauseThe internal inverter relay is stick to short or the SCR of STS (Static Transfer Switch) is short.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 35 shown on the display; the UPS has detected a fault condition: Para Comm Fail.
CauseParallel cable for communication is not connected well in the parallel system.
Recommended fixConnect the parallel cable well.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 36 shown on the display; the UPS has detected a fault condition: OP.I Unbalance.
CauseThe output current is extremely unbalanced between the paralleled UPSs or there is an error in the parallel system.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 41 shown on the display; the UPS has detected a fault condition: Over Temp.
CauseThe internal temperature is too high and reach the fault level (shutdown): 1) Maybe the environment is hot. 2) Maybe the fan is blocked or failed. 3) Maybe ventilation is blocked by the wall or other goods. 4) Load is too heavy.
Recommended fix1) Make sure the ambient temperature not over 40oC. 2) Make sure the fan is OK. 3) Make sure ventilation is well. 4) Remove some loads if possible.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 42 shown on the display; the UPS has detected a fault condition: CPU Comm Fail.
CauseInternal communication failure between CPUs.
Recommended fixContact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Fault code 43 shown on the display; the UPS has detected a fault condition: Over load.
CauseOverload time is out of the specification and the UPS shuts down automatically.
Recommended fixRemove excess loads from UPS output and restart it.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 29
Warning code 01 flashing on the display: Batt Open.
Cause1) The battery is not connected well; 2) The battery protection device is open.
Recommended fix1) Connect the battery well. 2) Replace or restore the protection device.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 07 flashing on the display: Over Charge.
Cause1) Battery numbers and setting are not matching. 2) Charger voltage is too high or charger failure.
Recommended fix1) Correct the battery number or its setting. 2) Disconnect the battery and check the charger output voltage. Then, contact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 08 flashing on the display: Batt Low.
Cause1) Battery is discharged deeply to low level. 2) Battery number is not correct. 3) Battery is in the end of life.
Recommended fix1) Recharge the battery. 2) Correct the battery number. 3) Replace the battery.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 09 flashing on the display: Over load.
CauseThe load is too heavy.
Recommended fixRemove excess loads from UPS output.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 0A flashing on the display: Fan Error.
Cause1) Fan is blocked. 2) Fan is in the end of life. 3) Fan detection circuit failed.
Recommended fix1) Make sure fan is not blocked. 2) Contact the dealer to replace the fan. 3) Contact the dealer to repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 0B flashing on the display: EPO Enable.
CauseEPO plug (jumper) is removed or the external EPO switch is off.
Recommended fixConnect the EPO plug (jumper) well or switch on the external EPO switch.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 27
Warning code 0D flashing on the display: Over Temp.
CauseThe internal temperature is too high and reach the warning level: 1) Maybe the environment is hot; 2) Maybe the fan is blocked or failed; 3) Maybe ventilation is blocked by the wall or other goods. 4) Load is too heavy.
Recommended fix1) Make sure ambient temperature not over 40oC. 2) Make sure the fan is OK. 3) Make sure ventilation is well. 4) Remove some loads if possible.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Warning code 0E flashing on the display: Charger Fail.
CauseCharger failed.
Recommended fixContact the dealer for repair.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Warning code 10 flashing on the display: IP Fuse Open.
CauseInput fuse on the power stage board is burnt.
Recommended fixCheck and replace the input fuse.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Warning code 33 flashing on the display: Overload 3Times.
CauseLocked in bypass after overload 3 times in 30 minutes.
Recommended fixRemove excess loads from UPS output first. Then, shut down the UPS and restart it.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Warning code 3A flashing on the display: Maintain Open.
CauseEMBS port is open or the maintain switch sensor (connected to EMBS port) is trigged. (The UPS is transferred to bypass).
Recommended fixIf the EMBS port is short-circuited, the warning will disappear.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Warning code 3F flashing on the display: Para Protect.
CauseParallel cable is still not connected well when restart after the parallel system is fault because of parallel communication failure. (When this warning appeared, the UPS could not start up because it is system protection for parallel system).
Recommended fix1) If the system is still needed to be operated in parallel mode, please connect the parallel cable well. And, choose "Para Unlock" in control menu to remove the warning. Then, the UPS could start up. 2) If the UPSs in the system are separated to single UPS, please disconnect the output to other UPSs and choose "Para Unlock" in control menu to remove the warning. Then, the UPS could start up. NOTE: Be careful to check the UPS operation mode (parallel or single) and the connections. If the parallel cable is not connected in the parallel mode, the UPS may be damaged.
Source:Galleon-X9-6-10K-RT_manual.pdf· page 28
Send us the code on your screen and a Voltronic 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 Voltronic user manuals. Always consult your device manual and a qualified technician before performing repairs.