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If Utility Power is Available
975-0288-01-01 3–7
If Utility Power is Available
The following fault conditions may arise when utility power is available.
Table 3-3
Possible Problems if Utility Power is Available
Problem Probable Cause Solution
Display is OFF, AC is
available on both hardwire
and unit AC socket
Inverter is turned OFF. AC output is always available when
AC input is available. Under this
condition, the inverter will not back
up the power when utility power is
OFF.
Display is OFF, AC is not
available on both hardwire
and unit AC socket
Main AC Panel or AC generator
input is beyond the operating range of
the unit (103 to 132 Vac).
Check utility or generator output
voltage.
Display is ON, AC is not
available on both hardwire
and unit AC socket
The 15A input circuit breaker on the
Main AC Panel or AC generator is
tripped or turned OFF.
The 15 A circuit breaker on AC
Distribution Panel and 15 A
supplementary protector near the four
AC outlets on the front panel have
tripped.
Reset the 15 A input circuit breaker.
Reset the 15A supplemental protector
near the four AC outlets on the front
panel and reset the 15A circuit
breaker on the AC Distribution Panel
Display is ON, AC is
available on hardwire
output but not on unit
AC socket
15 A supplementary protector on the
front panel has tripped.
Press the reset button to reset the
circuit breaker.
Bypass LED is flashing During the first 20 seconds of transfer
from inverter to Bypass Mode, the
inverter continuous to run and the
Bypass LED flashes. This provides
time for the utility to get steady
before it switches over. During the 20
seconds delay time, the display
feature is frozen.
None.