7.0Difficulty
7.1Troubleshooting chart
PROBLEM
POSSIBLE CAUSE
ACTION TO TAKE
UPS will not turn on (lamp within power I/0 switch is not illuminated), but beeps when power I/0 switch is on.
UPS operates normally, but SITE WIRINGFAULTindicator is illuminated.
UPS occasionally emits beep, computer equipment operates normally.
UPS emits beep very often, more than once or twice an hour. Computer equipment operates normally.
UPS emits loud tone. Power I/0 switch is on but computer equipment is not powered. UPS’s rear panel circuit breaker is tripped (button is extended). Normal utility voltages are known to be present.
1.Line cord plug is loose.
2.Rear panel circuit breaker is tripped.
3.Dead wall socket.
1.Building wiring error such as missing ground, hot and neutral polarity reversal, or overloaded neutral wiring.
2."Cheater" plug or adapter installed onto line cord plug (ground not connected).
The UPS is briefly transferring your equipment to its alternate power source due to utility voltage sags or spikes.
Utility voltage is distorted or branch circuits are heavily loaded.
UPS has shut down due to severe overload.
1.Check fit of line cord plug.
2.Circuit breaker is tripped when button is extended. Unplug excessive loads and reset breaker (press button).
3.Check wall socket with a table lamp.
1.A qualified electrician should be summoned to correct the building wiring. The UPS will not provide rated noise and surge suppression with incorrect building wiring.
2.Plug the UPS into 2 pole, 3 wire grounding outlet only.
This operation is normal. The UPS is protecting your computer equipment from abnormal utility voltages. If the audible alarm becomes annoying, set option switch #1 to the up position.
Have your line voltage checked by an electrician. Operating your UPS from an outlet which is wired to a different branch fuse or circuit breaker may help. Adjust transfer voltage via option switches #2 or #3 if it is known that your equipment will operate normally at the utility voltages given in section 5.5.
Turn off UPS and unplug excessive loads. Laser printers will overload the UPS and should be plugged into a quality surge suppressor. See the section covering Overloads. Once overload is removed, reset the circuit breaker (press button).
Page 25
