Chapter 9 : Troubleshooting - Delta M-1K User Manual

1. When a problem occur, please check if the following situations exist before
contacting Delta service personnel:
Is the mains voltage present at the UPS input?
z
z
Is the input breaker tripped?
z
z
2. Please have the following information ready if you would like to contact the Delta
service personnel:
Unit information including model, serial number, etc.
z
z
An exact description of the problem. The more detailed description of the
z
z
problem, the better.
3. When you see the following problems occur, please follow the solutions shown
below.
NO. Problem
1 No LED
illuminates /
No alarm
goes off.
2
The UPS is
not turned on.
3 The UPS
runs in battery
mode even
when the AC
source is
normal.
Amplon M Series

Chapter 9 : Troubleshooting

Possible Cause
The ON/ OFF
button (
turned on.
The mains voltage
is not present.
The ON/ OFF
button (
turned on.
The input breaker is
tripped.
The input power
cord is not firmly
connected.
Solution
Press and hold the ON/ OFF button
) is not ( ) and release it when you hear
one beep to turn on the UPS.
Please contact qualified electrician
to inspect the status of the mains.
Press and hold the ON/ OFF button
) is not ( ) and release it when you hear
one beep to turn on the UPS.
Press the input breaker to reset it.
If the input breaker trips again after
the UPS starts up, contact service
personnel.
Connect the input power cord firm-
ly.
3 6