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Section 7: Troubleshooting Guide
The following guideline may be helpful for basic problem solving.
No.
LED and LCD status
ACTION
1
AC utility power is normal. UPS is running normally, but energy
storage capacity is low (referring to Battery Status Menu). Buzzer
beeps once every second for energy storage low.
Possible charger failure.
Contact Marathon Power
for service.
2
AC utility power is normal. The output load is supplied through AC
bypass. Fault LED lights up and buzzer beeps continuously.
Internal fault.
Contact Marathon Power
for service.