Troubleshooting

Use this table for troubleshooting help.

Symptom	Possible cause	Remedy
Alarm is sounding even though the mains is normal.	The AC input power is not connected well.	Check if input power cord firmly connected to the mains.
Alarm is sounding even though the mains is normal.	The AC input is connected to the UPS output.	Plug AC input power cord to AC input correctly.
and thewarning icon are flashing on the display, and the alarm is sounding every 2 seconds.	EPO function is activated.	Set the circuit in closed position to disable EPO function.
,and thewarning icon are flashing on the display, and the alarm is sounding every 2 seconds.	Line and neutral conductors of UPS input are reversed.	Rotate mains power socket by 180° and then connect to UPS.
,and thewarning icon are flashing on the display, and the alarm is sounding every 2 seconds.	The external or internal battery is incorrectly connected.	Check if all batteries are connected well.
Fault code 27 is on the display, and the alarm is continuously sounding.	Battery voltage is too high or the charger is fault.	Contact your dealer.
Fault code 28 is on the display, and the alarm is continuously sounding.	Battery voltage is too low or the charger is fault.	Contact your dealer.
, and the warning is flashing on the display, and the alarm is sounding every second.	UPS is overloaded. Devices connected to the UPS are fed directly by the electrical network via the Bypass.	Remove excess loads from UPS output.
	After repetitive overloads, the UPS is locked in the Bypass mode. Connected devices are fed directly by the mains.	Remove excess loads from UPS output first. Then shut down the UPS and restart it.
Fault code 49is on the display, and the alarm is continuously sounding.	UPS is over input current.	Remove excess loads from UPS output.
Fault code 43 andis flashing on the display, and the alarm is continuously sounding.	The UPS shut down automatically because of overload at the UPS output.	Remove excess loads from UPS output and restart it.
Fault code 14 is on the display, and the alarm is continuously sounding.	The UPS shut down automatically because short circuit occurs on the UPS output.	Check output wiring and if connected devices are in short circuit status.
Fault codes 01, 02, 03, 11, 12, 13 and 41 are on the display, and the alarm is continuously sounding.	A UPS internal fault has occurred. There are two possible results: 1. The load is still supplied, but directly from AC power via bypass.	Contact your dealer
Battery backup time is shorter than nominal value.	Batteries are not fully charged	Charge the batteries for at least 5 hours and then check capacity. If the problem still persists, consult your dealer.
Battery backup time is shorter than nominal value.	Battery defect	Contact your dealer to replace the battery.
Fault code 2A is on the display, and the alarm is continuously sounding.	The short circuit occurs on the charger output.	Check if battery wiring of connected external pack is in short circuit status.
Fault code 45 is on the display, and the alarm is continuously sounding.	The charger does not have output and battery voltage is less than 10V/PC.	Contact your dealer.