Eaton POWERWARE Plus 18, Manual

Page: 171 / 311

and Maintenance
ALARM
DESCRIPTION/CAUSE ACTION
Input voltage The phase A input phase to neutral
phase A, phase B, voltage is less than 87 VAC for 180”
l
Verify input breaker
phase C phase angle, 100 VAC for 120” phase
angle, or 174 VAC for international
l
Verify input voltage
line cord connections
l
If input voltage is OK but the
l
utility input is too low
metering doesn’t read prop-
- Input power is proper- or alarm is active
l
Replace the Front Panel FRU
The it’s self test
bit failure
l
failure
l
Isolate. the Inverter logic power
l
Power supply failure from the logic power
and measure the power sup-
ply inputs to the Itlverter
l replace the
control Inverter failed it’s self test
l
Isolate. the Inverter logic power
board failed BIT
l
Inverter failure the Rectifier logic
l
Power supply and measure the power sup-
ply inputs to the
l replacetherllvaterFRu
CPU BIT The failed it’s self test
l
Isolate the logic power
railed
l
belter failure. from the logic power
l
Power supply
and then measure the sup-
ply inputs to Itlverter
l replacetheIrtvmerFRu
The failed it’s self test
l
Isolate the logic power
failed
l
Inverter failure from the Rectifier logic power
l
Power supply failure the power sup-
ply inputs to the Inverter
l
replace the Inverter FRU
The FRU commanded
l indication only
shutdown
to shut-down
l lfalarmisconstantreplacethe
l
ShouldappearaftexanInverkr
over The heat sink is approaching
l
Replace FRU
dangerous levels
l
failure
temp sense control has detected Heat-
l
Replace Inverter FRU
‘ail
21°C
ELECTRONICS CONFIDENTIAL
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