In Bulk Mode, it may not be possible to observe the 14.4 VDC output because of the
voltage-current relationship. To measure the 14.4 VDC, reduce some DC loads while
monitoring the voltage at the converter output. As the DC loads are removed, the voltage
will begin to climb until 14.4 VDC (nominal) is shown on the meter.
As the battery continues to charge, the current drawn by the battery will gradually decrease.
WFCO converters are designed to drop out of Bulk Mode when the total amperage draw
from the converter reaches a preset point, indicating the battery is charged. If the amperage
draw stays above the preset point, the converter will stay in Bulk Mode for a maximum
of four hours. ese features have been implemented to protect and extend the life of the
batter y.
Float Mode:
is is the third stage of converter operation. is mode is designed to provide a trickle
charge to the battery. If the converter observes no signicant variations in current draw for
approximately 44 continuous hours, it will drop the output of the converter from 13.6 VDC
to 13.2 VDC. is lower voltage will keep the battery charged while the RV is not in use.
is also helps preserve the life of the battery, while keeping it charged and ready for use. A
change in DC current will cause the converter to exit Float Mode and return to the default,
or normal, Absorption Mode.
Note: e converter, while in Float Mode, will continue to supply a trickle charge to the
battery. If the RV is in storage for thirty (30) days or more, be sure to check the battery and
its uid levels.
Front Panel Features:
ree front panel LEDs show the converter’s operating status at a glance:
• Green LED – Normal operation, connected to 110 VAC.
• Amber LED – Steady ON: the battery is discharging when operating on battery only.
Flickering: the battery is approaching a low level
• Red LED – A fault has been determined in one of the protection circuits: Overload,
Over-Temperature or Short-Circuit. e LED does not light if a battery Reverse Polarity
occurs.
A Manual Override switch is provided to force the converter into Bulk Mode to quick
charge the batteries if necessary. NOTE: Placing the converter into Bulk Mode with a fully
charged battery could overcharge the battery.
7
Figure 3
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