Delta Amplon UPS102N2000B035 User Manual page 30

Error
Code
E16 Inverter
Fault
E18 DC-DC Fault The UPS has
E19 Abnormal
Output/
Inverter
Voltage
E21 O/P Short
Sd1
RPO
Shutdown
Sd4
Battery Low
Shutdown
Amplon N Series
Meaning Possible Cause
The UPS has
abnormalities.
abnormalities.
The UPS has
abnormalities.
Output has a short-
circuit issue.
Remote shutdown
is executed from dry
contact.
The UPS transfers to
run in battery mode
due to AC utility
abnormality; however,
the battery power is
almost used up.
Contact service personnel.
Contact service personnel.
Contact service personnel.
1. Check whether the output
has a short-circuit issue.
2. Contact service personnel.
After the remote shutdown
events are eliminated, follow
the turn-on procedures to
start up the UPS.
1. Check the main AC source
and the input power cord's
status.
2. Contact service personnel.
2 6
Solution