Delta Electronics Amplon GAIA Series, User Manual, Page: 30 / 36

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Problem Possible Cause Solution
Incorrect transmission speed.
Re-test after using another
different transmission speed.
Incorrect RS-232 connection.
Refer to communication
interface (Section 3-4) of this
manual Re-connect the UPS
with COM1 / COM2 on PC
again.
PC-UPS
communication does
not work properly.
Incorrect USB connection.
Re-connect the UPS with
USB on PC again.
No incoming utility.
Check input power
connection.
The rear panel input circuit
breaker is tripped. (Button is
out).
1. Reduce some loads
connected to the UPS.
2. Reset the circuit breaker.
(Push button in)
UPS operates on
battery even though
the line is in normal
operating condition.
Very high, low or distorted
utility voltage. Have qualified electrician
check the input voltage.
The exhaust fans and
ventilation grills may be
obstructed. Choose a well-ventilated area
to position your UPS to allow
adequate dissipation of heat.
UPS over
temperature.
The environment
temperature exceeds 40
o
C
(104
o
F).
Position your UPS in cooler
area.
“FAULT”LED lights on,
alarm beeps
UPS failure. Call fore service engineer.
“OVERLOAD” LED
lights on and buzzer
beeps continuously.
Overloaded.
Remove some uncritical
load.
On-Line mode: Remove the
utility.
UPS O.T.P. Warning
The components used inside
the UPS overheat or wind
channel block. Backup mode: Press the
OFF key to turn off the UPS.