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CENTRIC User Guide, rel. 3.4
101
10.5
Troubleshooting “No output”
This procedure is to be performed only as directed by Table 11 above.
There are a number of possible reasons for a “no output voltage” condition.
a) The EPO (Emergency Power Off) switch was activated.
See “
Emergency Power Off is active
” in Table 11.
b) A complete shutdown of the UPS was performed.
Restart ths system as follows: “Operation > Turn on/off > System on”.
If the controller is not available, press the “Enable” button on the static switch panel (Figure 6)
for about 3 seconds and then release it to turn the system on.
c) Shutdown may have been due to battery discharge following a failure of the power mains.
See “
End of battery backup
” in Table 11.
d) Bypass is in “Controlled” mode (see 7.2.4.5.1) and both the inverter voltage and the bypass
voltage are out of range. Verify that the static switch measurements are correct; perform
calibration if necessary (“Setup > STSW > Bypass voltage calibration” and/or
“Setup > STSW > Inverter voltage calibration”).
If the static switch measurements are correct, change the bypass configuration to “Forced”
(“Setup > STSW > High-level setup > Forced > Confirm”).
