Stand 08/2005
Seite 9
techbes_dt_MI_MIRM_050824.doc
Änderungen und Irrtum vorbehalten
EFFEKTA
UPS-Series MI
technical description
8.
Troubleshooting guide
PROBLEM
POSSIBLE CAUSE
ACTION
The UPS can only work on
battery mode even if the utility
is normal
1. A loose power plug
2. Fuse burn out
1. Re-plug the power core tightly
2. Replace the fuse
The UPS working normally
but with a short backup time
and can not be charged fully
Bad battery
Return to service
Press down the sw but no
response with the UPS
Internal fuse burn out
Return to service
Fault condition after press the
ON/OFF key.
UPS Failure
Return to service
Working at normal LINE mode
but shutdown immediately as
transfer to battery mode
1. Bad connection of
batt. Cable
2. battery empty
3. Charger failure
1. Check the batt. Cable
2. Charge the batt. Over 12
hours
3. Return to service
UPS at normal condition but
no output
Bad output connection Re-connect the output cable
INV LED off, Fault light and
alarm beeps continuously
Output short circuit
Remove the short circuit
condition or equipment
9. MI Block Diagram
O/P
I/P
ISO
RELAY
CHG
BATT
INV
CONT
TRANSFORMER
JACK I/P
JACK O/P
SUPPRESSORS
