WFCO WF-8930/50 Series, Руководство оператора

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TROUBLESHOOTING INSTRUCTIONS
Troubleshooting the WF-8700 Series Power Center
Because the WF-8930/50 Series Distribution Centers do not contain a converter/charger,
troubleshooting will be limited to checking DC power coming into the unit and proper fuse
board operation. See (figure 1) on page 4.
Check for Converter or Battery Input Voltage
Note: Depending on how the RV manufacturer connected the DC power to the
WF-8930/50 Series Distribution Center, it could have been routed in one of 2 ways.
1. Power could be coming directly into the WF-8930/50 Series Distribution Center fuse
board from the converter/charger. The battery (if supplied) would also connect to the fuse
board.
2. Power from the converter charger would be connected directly to the battery. A cable
from the battery would be connected to the fuse boards input lugs.
We’ll use the first connection method in our discussion below.
Make sure the WF-8930/50 Series Distribution Center is receiving DC power from the
converter/charger or battery. First, check that the converter/charger is plugged into an AC
source (105-130 VAC) and is operating. Check the converter input voltage at the top lugs of
the fuse board with a voltmeter. Be sure you have good cable connections at the lugs. Place
the meter probes on the lugs as follows; place the Positive (red) meter probe on the
+ POS lug and place the Negative (black) meter probe on the NEG- lug. If the voltage from
the converter charger reads approximately 13.6 VDC (+/- 0.2) at the lugs, the fuse board is
getting DC power.
If no converter/charger/battery input voltage is read at these lugs, check for an open inline
fuse or disconnect switch in circuit coming to the fuse board. One may have been installed
by the RV manufacturer. Also check for any other loose wiring connections.
Blown Fuse Indicators on DC Fuse Board
The DC Fuse Board has individual blown fuse indicators as standard equipment. Each
circuit has a Red LED to indicate a blown fuse.
NOTE:
The fuse board employs surface
mount LEDs which are barely visible to the naked eye. If one of the Red LEDs is
illuminated, check for a blown fuse. If blown, replace the fuse with a known good fuse of
the same rating.
NOTE:
If the replacement fuse blows again, check that circuit for a short or
overload condition.
If, for some reason, one of the fuse board output circuits is connected to a load that has a
switch that is turned OFF or an appliance that is turned OFF, the indicator LED will not
illuminate even if the fuse is blown or removed from the fuse board. Turn the switch or
appliance ON and re-check the fuse circuit with the fuse removed. If the LED still remains
OFF, check for a broken wire to the switch or appliance.
If an indicator LED remains illuminated with the known good fuse in place, check for
possible damage to the fuse board at that location. If damage is found, the fuse board will
need to be replaced.