WFCO WF-9800 Series User Manual
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Before checking the converter output voltage, it is necessary to
disconnect the battery cables at the battery. Make sure the converter is
plugged into AC source (105-132 Volts). Check the converter output
voltage at the battery with a voltmeter. Place the 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. Be sure you
have good connections at the cables. If the voltage reads 13.6 Vdc (+/-.2)
with no load, the converter is functioning properly.
If the converter output voltage at the battery reads in the 0.0 Vdc range,
or the battery is not charging, check for:
- an open inline fuse in the battery wire (if installed by OEM)
- an open wire between the converter and the RV battery
- loose ground connection
- improper torques
If the converter fuses and AC voltage are good, but the converter output still
reads zero volts, the converter is not functioning properly.
Contact Cheng USA, Inc. Tech Support at 1 (877) 294-8997.
WF-9800 Series Troubleshooting
CHASSIS
(EARTH)
GROUND
0V
20
V
Distribution Panel/
Power Center
WF-8930/50NP
GROUND BAR
TM
TM
GENERAL COMPLIANCE INFORMATION
FCC Compliance Class B
NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense.
The WF-9800 Series units are UL-Listed, and cUL-Listed (Canadian).
They comply with FCC Class B requirement (see below)
12 V
BATTERY
Nominal setup for WF-9800 Series
REVERSE BATTERY
PROTECTION FUSES
FOR TESTING PURPOSES
DISCONNECT
THESE OUTPUT WIRES
D
C
®
®