Troubleshooting - Multilink EP 1100 Installation & Operation Manual

9.02

Troubleshooting

This troubleshooting guide has been designed to help quickly locate and resolve common problems. The
table assumes normal operation and configuration of the UPS at any given time. If the problem cannot be
resolved, replace the power supply with a known good unit or call Multilink Inc. for support.
Operating Conditions
No output voltage
UPS will not transfer to Invert-
er mode
No communication through
Ethernet connection
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54
UPS LED/LCD Status
Output Status LED is OFF.
Alarm/Fault LED ON.
UPS shuts down upon loss
of Line power.
RJ45 Yellow LED Lit
Green LED not flashing
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Corrective Action
Verify output wiring from the load to the cabinet
Verify that the UPS is not overloaded.
Verify line voltage is within range.
Verify battery connector is connected and
battery voltage is within range.
Verify that a fault is not present.
Verify that the UPS is in not in Qual or Standby
Modes.
Verify battery string is connected and battery
voltage is within range.
Verify battery breaker is closed.
Verify that UPS is not overloaded.
Verify that a fault is not present.
Verify that the Ethernet cable is fully seated
at both ends of the cable.
Verify computer network card configuration
if addressing laptop locally.
Verify IP address and network configuration
of EP1100 through Status menu.
Reset Ethernet card using Reset Button.