Powercom SKP-500A Service Manual page 6

(5)TROUBLE SHOOTING FOT SKP-500A/700A SERIES:
PROBLEM
UPS not on & "On" switch not been push
LED not light
Battery voltage less than 10V
PCB failure
UPS always at AC FUSE or Circuit breaker open
battery mode
Line voltage too high, too low or black
out
Back up time too Battery not fully charged
short
Battery too old
PCB failure
Buzzer continuous Overload
beeping
SKP-500A/700A SERVICE MANUAL V1.0
POSSIBLE CAUSE
6 /6
ACTION TO TAKE
Push the "On" switch
Connect the utility power to the ups and test
after 8hours.
Replace the PCB, call for service
Replace the AC fuse in the inlet, or re-push
the circuit breaker.
Normal condition
Recharge the UPS at least 8 hours
Replace Battery, call for service
Replace PCB, call for service
Remove the non-critical loads