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6. TROUBLESHOOTING
To troubleshoot the unit, please note the error code displayed on the main unit and review
"Understanding the Error Codes" in section 5.
PROBLEM
No AC Output at
AC Output Socket
Charger did not
supply charging
current
WhisperPower Inverter / Battery Charger
POSSIBLE CAUSE/CONDITION
The thermal breaker on the unit is
tripped
The AC Output switch is turned Off.
With unit running from AC Input Source
or shore power, the AC Input Source is
available but is outside the acceptance
range.
Unit is set to Inverter Off
Check Error code on display. Inverter
may be overloaded.
DC over-voltage, under-voltage, or
other shutdown type errors in addition
to overload.
For 120V model, GFCI may have tripped
Check charger setting. Charger may be
set to Off.
Unit had determined the battery is bad.
See also description in Error Code E01
(By-Pass Mode) and E11
Battery is with BTS installed and it sens-
es the battery temperature is high (E19)
Battery is with BTS installed and it sens-
es the battery temperature is too low to
accept charge (E21)
SOLUTION
Reset the thermal breaker
Press and hold the 'ESCAPE' button
for 5 seconds to turn On the AC
Output.
Check AC Input Source.
Operating range of AC Input is 190
– 267Vac.
Unit Start-up AC Voltage is higher
than 198 Vac and below 264VAC.
Check unit 'Int' setting.
Reduce AC load. Inverter may be
overloaded.
Check battery voltage.
Reset GFCI
Set Charger function 'CHG' to On.
Check battery and remove the DC
load connected to the battery and
restart the charger again
Check battery temperature or en-
vironmental temperature. Battery
charging cycle will resume when
the battery cools down to accept-
able level. See Understanding the
Error Codes for more details.
Check battery temperature or
environment temperature. Battery
charging cycle will resume when
the battery temperature increase
to acceptable temperature. See
Understanding the Error Codes for
more details.
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