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16
TROUBLESHOOTING
Symptom
Possible Cause
Remedy
HTUPS 500 is always
in battery mode.
Power cord is loose.
• Ensure that the power cord is firmly
plugged into the back of the unit
and the AC wall outlet.
AC fuse is blown.
• Unplug the power cord from the wall
outlet and remove and replace the
250V AC fuse.
HTUPS 500 is defective.
• Please see warranty information.