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TROUBLESHOOTING INSTRUCTIONS

Troubleshooting the WF-68100 Series Converter-Charger

Converter Output Voltage

Before checking the WF-68100 Series Converter-Charger output voltage, disconnect the

battery cables at the battery. Make sure the converter is plugged into an AC source (105-

130 Volts). Check the converter output voltage at the battery with a voltmeter. Place the

meter probes on the disconnected battery cables; place the Positive (red) meter probe on

the + Positive red battery wire and place the Negative (black) meter probe on the

-Negative black wire on the battery cable (Figure 4). Be sure you have good connections

at the cables. If the voltage reads 13.6 - 14.4 VDC (+/- 0.2) with no load, the converter is

functioning properly.

If the converter output voltage at the battery reads 0.0 VDC, or if the battery is not

charging, check for an open inline fuse in the battery wire circuit. One may have been

installed by the RV manufacturer. Also check for loose wiring connections.

Reverse Polarity Fuses

If there is no DC output coming from the WF-68100 Series Converter-Charger output

lugs, rst check the reverse polarity fuses on the rear panel. en, visually inspect the

fuses for any breaks in the fuse element. If no breaks are found, use a continuity tester to

check for continuity. If the reverse polarity fuses are blown, it means the RV battery was

accidentally connected in reverse, either at the battery or at the converter. Investigate the

connections and reconnect the cables properly. Replace the fuse with the same type and

amperage rating as the original.

IMPORTANT: ese fuses protect the converter from damage if the RV battery is

accidentally connected in reverse. A reversed battery connection, even if for only a

second, will cause these fuses to blow.

Figure 4

WFCO WF-68100 Series User Manual

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