Troubleshooting - GE VH Series 700 User Manual

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
Thermal Circuit Breaker (TCB)
tripped
UPS will not switch on (without
using 'battery start')
and the output has been off for a
few secs. (see also 4.3.3)
UPS switched off automatically
LEDs 'operation' and 'alarm' blink,
buzzer sounds 1/2 secs. UPS does
not start.
LEDs 'alarm' and 'on battery'
blink, buzzer sounds 1/5 secs
modifications reserved
OPM_VHE_XXX_0K7_3K0_XGB_V010
POSSIBLE CAUSE
UPS overload
System failure
Line cord not connected
Dead wall socket outlet, or mains
voltage out of limits
Tripped Thermal Circuit Breaker
UPS overtemperature
Mains failure, battery discharged
Programmed shutdown in
progress
The load is < 5% of the max. load
and no mains power is present.
(No-load shutdown function is
active, see 4.3.2)
P (phase) and N (neutral) are
reversed at the UPS input in a
system with grounded Neutral.
Battery test just after installation
or mains failure
Battery test shows weak battery
22
SOLUTION
Reduce load, reset TCB
(2, fig. 3.3.3 a/b)
Contact your dealer or consult
www.gedigitalenergy.com
Read 3.3.6
Connect line cord
Contact qualified electrician
See above
Allow UPS to cool down
Wait until mains returns
See 4.4.10
Wait until mains returns
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.
Allow the UPS to recharge the
batteries
Read 7.4, have the batteries
replaced
User manual VH Series 700-3000 UPS 1.0 (GB)