WhisperPower Inverter / Battery Charger
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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
POSSIBLE CAUSE/CONDITION
SOLUTION
No AC Output at
AC Output Socket
The thermal breaker on the unit is
tripped
Reset the thermal breaker
The AC Output switch is turned Off.
Press and hold the ‘ESCAPE’ button
for 5 seconds to turn On the AC
Output.
With unit running from AC Input Source
or shore power, the AC Input Source is
available but is outside the acceptance
range.
Check AC Input Source.
Operating range of AC Input is 95
– 139Vac.
Unit Start-up AC Voltage is higher
than 99 Vac and below 132VAC.
Unit is set to Inverter Off
Check unit ‘Int’ setting.
Check Error code on display. Inverter
may be overloaded.
Reduce AC load. Inverter may be
overloaded.
DC over-voltage, under-voltage, or
other shutdown type errors in addition
to overload.
Check battery voltage.
For 120V model, GFCI may have tripped
Reset GFCI
Charger did not
supply charging
current
Check charger setting. Charger may be
set to Off.
Set Charger function ‘CHG’ to On.
Unit had determined the battery is bad.
See also description in Error Code E01
(By-Pass Mode) and E11
Check battery and remove the DC
load connected to the battery and
restart the charger again
Battery is with BTS installed and it sens-
es the battery temperature is high (E19)
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.
Battery is with BTS installed and it sens-
es the battery temperature is too low to
accept charge (E21)
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.
