MGE UPS Systems S3 - Manual (Page 56)

If AC has been applied to the Inverter and is within proper
limits (120VAC or 230VAC, +/- 10% maximum) the Inverter
STATUS indicator should turn YELLOW and then after a
short delay, it will turn GREEN, indicating power is being
supplied to the load.
If the Inverter STATUS indicator
remains illuminated either YELLOW or RED, follow the
instructions for the basic Inverter system.
The Bypass
STATUS indicator will start with YELLOW and after a short
delay, it will turn GREEN. If the AC input voltage is not within
proper limits, the Bypass STATUS indicator will be YELLOW.
If the utility AC is greatly out of limits, either too high or too
low, the Bypass STATUS indicator will be RED. If it is RED,
the Inverter system will not be allowed to transfer to the
bypass mode in the event of an overload or Inverter failure.
If the Bypass STATUS indicator is RED, the Inverter STATUS
indicator will go from GREEN to YELLOW.
This Bypass
STATUS indicator will blink ON for one second, OFF for one
second, indicating the utility AC is not the primary source
powering the load.
In this mode of operation, the Utility AC is being used to
power the load. At start up, the Inverter STATUS indicator
should turn GREEN after going through the lamp test
sequence and power up of the battery booster. This indicator
should blink ON for one second, OFF for one second,
indicating it is not the primary power source for the load. The
Bypass STATUS indicator should be GREEN if the utility AC
is within limits, YELLOW if it is not within proper limits. If the
utility AC is not within the +/- 10 % of the nominal value, the
load will be powered from the Inverter.
If installation, setup, and operation have been rechecked,
use Table 4-2 to relate the symptoms to a probable cause,
and obtain suggestions on how to proceed. It is not possible
to anticipate all symptoms in such a guide, but those listed
are the ones most frequently encountered. Therefore, the
guide can help to quickly isolate most common problems.
Maximum benefit from the guide can be realized if care is
taken to observe all of the information on the front panel to
define complete symptoms.
An in-depth knowledge of
installation, setup, and operation in this manual will also
greatly enhance the use of the guide.
4.4.6 Troubleshooting
Guide
4.4.5 OFF-LINE Mode
4.4.4 ON-LINE Mode
4 — 6 Maintenance and Service 86-153061-00
Topaz S3 Inverters 0.5 kVA, 1 kVA, & 2 kVA