Online UPS Specialist OPP Series, Operating Manual

Page: 38 / 52

- 38 - Revision 1.0
5. Trouble Shooting
5.1. Basic trouble shooting
Problem & Possible Cause Solution
UPS will not turn on
REPO active Ensure REPO is connected
and external switch is reset
Input breaker not switched on Ensure that UPS input breaker on front
panel has been switched to "ON" position
UPS input cct breaker may have tripped Ensure that the load on the UPS is less
than the rating label power stated.
The UPS may have overloaded.
Input/battery cables not correctly fitted Ensure that input cables and battery cables
are securely fitted into the UPS and battery
pack. Check battery breaker is switched to
"ON" position
The UPS reports a code at start up See code descriptions in "LCD trouble
shooting guide"
UPS will not provide power to the load
Power only present on one output If 2.5kVA or 3kVA unit – check load
receptacle segment control setting. See page 34
No output from output cable Check cable is correctly installed into rear
of UPS.
Output fails as soon as load connected make sure that load does not exceed
maximum rating of UPS
UPS operates from battery despite
mains being available.
Check fusing Input fuse may need replacing
Input voltage out of tolerance Check LCD reading of input voltage - it
must be within specified limits of voltage
and frequency – specification section 7.
Auxiliary mains input not working Check that Auxiliary supply is plugged in at
source.
Generator does not seem to power UPS, Check generator is properly governed for
without UPS going to battery both frequency and voltage. Some low
grade generators will not supply a stable
enough supply to run an UPS