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22 Freedom HF Owner’s Guide
Operating During Transition Between Shore Power and Inverter Mode
Inverter Loads
The Freedom HF will operate most AC loads within its power rating of
1000 watts (Freedom HF 1000) or 1800 watts (Freedom HF 1800).
However, some appliances and equipment may be difficult to operate, and
other appliances may actually be damaged if you try to operate them with
the Freedom HF. Please read “High Surge Loads” and “Trouble Loads”
carefully.
Overload Conditions
There are two kinds of overload conditions:
• an overload warning and
• an overload shutdown.
Overload Warning When the Freedom HF’s AC load is approximately
100 W below the overload shutdown limit of ~1000 W (Freedom HF 1000)
and ~1800 W (Freedom HF 1800), the audible alarm beeps once every two
seconds and the display screen shows a fault code .
Overload Shutdown When the Freedom HF’s AC load increases to near
~1100 W (Freedom HF 1000 models) and ~2000 W (Freedom HF 1800
models), the audible alarm beeps every second and the display screen
shows a fault code . The Status LED turns solid RED and in 30 seconds,
both the unit and the display screen will shut down to prevent damage to the
inverter and protect the battery from being over-discharged.
High Surge Loads
Some induction motors used in freezers, pumps, and other motor-operated
equipment require high surge currents to start. The Freedom HF may not be
able to start some of these motors even though their rated steady state
current draw is within the inverter’s limits. The unit will shut down and
indicate an overload shutdown.
Over-temperature Conditions
During Inverter mode, when the Freedom HF’s internal temperature starts
to approach its preset shutdown limit, the alarm will beep every two
seconds and the display will show fault code . If the over-temperature
condition persists, the alarm will beep once per second and the display will
show fault code . The Status LED turns solid RED and the inverter will
shut down to prevent damage to the inverter and protect the battery from
being over-discharged. However, when the internal temperature drops and
falls within normal operating temperature, the Freedom HF will recover
automatically and will continue inverting.
During AC shore power mode, when the Freedom HF’s charger
temperature starts to approach its limit, the charging current will be reduced
to 10 amps (Freedom HF 1000 models) or 20 amps (Freedom HF 1800
models).
The Freedom HF also monitors the internal transfer relay temperature. It
automatically turns on the fan when the relay starts to approach its preset
temperature limit and turns off when it cools down. If the relay exceeds its
preset temperature limit, the display shows a fault code . See “To reset
error codes to :” on page 35.
Freedom HF InvChg Owners Guide.book Page 22 Thursday, November 24, 2011 11:20 AM