SYMPTOM
PROBABLE CAUSE
RECOMMENDED SOLUTION
“INPUT” and “BYPASS” indicator are
“ON”
“INPUT”, “BYPASS” and “FAULT”
indicator are “ON” and alarm sounds
continuously
1. UPS not running
2. Overload
Inverter failure
1. Turn on the UPS
1. Remove some load from the UPS
2. If it remains the same, call for service
1. Turn off main switch and turn on main switch again
2. If UPS doesn’t recover, call for service
Utility power failure
1. Check utility power is present at wall outlet
2. Otherwise, call for service
“INPUT” indicator is “OFF” and alarm
sounds periodically
1. Recharging the battery by keep the main switch
“ON” for 10 hours
2. Retest the battery discharging again. If it remains
the same, call for service
Batteries discharged completely
No output voltage when input power
fails
Rectifier failure
Call for service
“INPUT” and “INVERTER” indicator
are “ON” but alarm sounds
10
IX. TROUBLE SHOOTING /
PETUNJUK KETIDAKNORMALAN
