Chapter 7 : Troubleshooting - Delta Amplon UPA102R2RX2N035 User Manual

1. When a problem occurs, please check if the following situation exists
before contacting Delta service personnel.
Is the main input voltage present?
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
An exact description of the problem; the more detailed, the better.
z
3. When you see the following problems occur, please refer to the solutions
shown below.
Problem
No indication and
alarm even though
the mains is normal.
The icons
and
flash on the LCD
display and the alarm
sounds every second.
The error code 27 or
28 appears, the icon
illuminates on
the LCD display and
the alarm sounds con-
tinuously.

Chapter 7 : Troubleshooting

Possible Cause
The AC input power is not
connected well.
The AC input is connected
to the UPS output.
The external or internal
batteries are incorrectly
connected.
Battery voltage is too
high/ low or the charger is
abnormal.
37
Solution
Check if the input
power cord firmly
connected to the
mains.
Plug the AC input
power cord to the AC
input correctly.
Check if all batteries
are connected well.
Contact your local
dealer or customer
service.