Automatic Cooling Fan
e cooling fan in the WF-9800 Series Converter-Chargers is controlled by the
current (Amperage) load attached to the converter, NOT by temperature. e on-board
microprocessor increases fan speed as the total load increases and decreases fan speed as
the load decreases.
Unlike traditional temperature-controlled fans, the load-controlled fan provides better
component cooling by avoiding temperature spikes which can lead to premature component
failure.
Over-Temperature Protection
If the internal temperature of the converter exceeds a critical point, it will shut down. is
protects the unit from excessive heat that may damage sensitive components. e unit will
restart once the temperature inside has dropped.
Electronic Current Limiting
In the event that the output current exceeds the maximum rating for the WF-9800 Series
Converter-Charger, the output current will remain constant, but the output voltage will
begin to drop. If this occurs, the unit will recover once loads are reduced.
Short-Circuit Protection
Should a short circuit occur in the RV, the WF-9800 Series Converter-Charger will drop
the voltage output to zero volts. If the short-circuit condition is removed and no other
fault conditions are detected, the converter will resume normal operation. However, short-
circuit conditions are dangerous, and an RV will require inspection by a qualied service
technician.
4
Figure 1
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