iTrust UH11-0100L - Page 57

Turn off the UPS and cut
off the power input
immediately, contact the
distributor for help.
UPS internal fault
Abnormal noise or
smell inside the
UPS.
13
The UPS needs
maintenance, please
contact the distributor.
UPS internal fault
The buzzer beeps,
the fault indicator
shines, and the LCD
displays
“RECTIFIER FAIL”,
“INVERTER FAIL”,
“AUX SUPPLY
FAIL”, or “OUTPUT
FAIL”.
12
Restart the UPS after
confirming that load
short-circuit does not
exist.
UPS output short-circuit.
The buzzer beeps,
the fault indicator
shines, and the LCD
displays “OUTPUT
SHORT”
11
A. Check whether there
is air blowing out from
inside.
B. Remove the
substances blocking the
vent, or widen the
distance from the wall;
C. Wait for 10 minutes
until the UPS cools
down, then restart it.
Internal overtemperature
The buzzer beeps,
the fault indicator
shines, and the LCD
displays “TEMP
OVER”
10
ActionPossible CauseAlarm or Condition
Serial
No.
When reporting UPS fault to our company or the distributor, please
inform the machine model and machine No. (the bar code on the
rear panel of the UPS).
Chapter 5 Troubleshooting 45
E1-20010916-C-1.0