8 - Troubleshooting
Whenever a malfunction occurs, first check external factors (e.g. connections, temperature, humidity
or load) to determine whether the problem is caused by the unit itself or by its environment.
Subsequently check the thermal circuit breaker: it may be tripped. If so: reset it (see fig. 3.3.3 a/b)
and be sure that the UPS is not overloaded.
The following chart is a simple troubleshooting checklist only. If the suggested solution does not
succeed, or if the information is insufficient to solve the problem, please contact your dealer or
consult www.gedigitalenergy.com.
PROBLEM
POSSIBLE CAUSE
SOLUTION
UPS overload
Reduce load, reset TCB
(2, fig. 3.3.3 a/b)
Thermal Circuit Breaker (TCB)
tripped
System failure
Contact your dealer or consult
UPS will not switch on (without
using 'battery start')
and the output has been off for
a few secs. (see also 4.3.3)
Line cord not connected
Read 3.3.6
Connect line cord
Dead wall socket outlet, or
mains voltage out of limits
Contact qualified electrician
Tripped Thermal Circuit
Breaker
See above
UPS switched off automatically
UPS overtemperature
Allow UPS to cool down
Mains failure, battery
discharged
Wait until mains returns
Programmed shutdown in
progress
See 4.4.10
The load is < 5% of the max.
load and no mains power is
present.
(No-load shutdown function is
active, see 4.3.2)
Wait until mains returns
LEDs ‘operation’ and ‘alarm’
blink, buzzer sounds 1/2 secs.
UPS does not start.
P (phase) and N (neutral) are
reversed at the UPS input in a
system with grounded Neutral.
In a system with grounded
Neutral: reverse the mains
plug.
In other systems: disable the
indication. See 4.4.12 and 4.5.
In case of doubt contact a
qualified electrician.
LEDs ‘alarm’ and ‘on battery’
blink, buzzer sounds 1/5 secs
Battery test just after
installation or mains failure
Allow the UPS to recharge the
batteries
Battery test shows weak
battery
Read 7.4, have the batteries
replaced
