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GENERAL COMPLIANCE INFORMATION

The WF-9900 Series units are UL-Listed, and cUL-Listed (Canadian).
They comply with FCC Class B requirement (see below).

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. .

  

 

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NEG-

NEG-

POS+

+VCC

VDC

Ov

20v

Fig. A

Troubleshooting

Setp 1: 

Make

 

sure RV is plugged into 120 volt shore power.

Go to converter and remove the front door assembly. Turn off
main breaker and remove the 4 reverse polarity fuses. Check
the fuses with a continuity meter to make sure fuses are good.

Do not 

reinstall the fuses back into the converter at this time.

Wait approximately one minute, then put main breaker on. Using
a DC volt meter, measure voltage between Negative and VCC lugs
on the DC fuse board. 

See fig. A

Voltage should read between 13.6 to 13.7 volts DC.
 a. If converter

 does not read

 within this voltage range then 

     replace the converter.
 b. If converter 

does read

 within this voltage range proceed to 

     Step 2.

Step 2:

 Turn off main breaker. Reduce load in RV by turning off

as many 12 DC items (lights, etc..)  as possible. Go to the battery
and disconnect it. 
Go back to the converter and replace the 4 reverse polarity fuses 
you removed in step 1. Turn the main breaker on. Using a DC 
voltmeter, measure voltage between Negative and VCC on the 
DC fuse board. 

See Fig.A

 Voltage should read between 13.4 to 13.6 volts DC.
 a. If converter 

does not read

 within this voltage range then 

     replace the converter.
 b. If converter 

does read

 within this voltage range, start adding 

     load (light, etc..) while monitoring the voltmeter. If voltage drops
     below 13.4 volts DC replace the converter.
 c. While adding load (lights, etc..), if voltage remains at the 13.6 to
     13.7 volt DC range but no lights come on, this would indicate 
     there is a wiring issue. 
 d. If converter is in the 13.4 to 13.6 volt DC range and most of the
     DC items (lights, etc..) are on, this would indicate the converter is 
     functioning properly.

Note:

 

Issues pertaining to the 120 volt AC circuits should be 

handled by a qualified Technician. 

Summary of Contents for WF-9900 Series

Page 1: ...ULTRA III Power Center WF 9900 Series model number located on the door assembly label Distributed in the U S A and Canada by ARTERRA Distribution Sales 574 294 8997 Warranty Service 877 294 8997 Fax 574 294 8698 www wfcoelectronics com ...

Page 2: ...revent fire or explosion do not install in compartments containing batteries or flammable materials For continued protection against risk of fire or electric shock replace only with same type and ratings of fuse LP gas Check on a monthly basis the fluid level in any battery connected to RV charging system This product is not ignition protected and should not be installed in an LP compartment CAUTI...

Page 3: ...a trickle voltage of 13 2 Vdc When the converter senses a demand by turning on lights the converter automatically returns to the Absorption mode 4 TROUBLESHOOTING INSTRUCTIONS WF 9900 SERIES FUSE FUSE VCC Model number MODEL WF 89xx Troubleshooting 9900 Series Power Center If there is no DC output first check the reverse polarity fuses on the front panel of the WF 9900 Series power center Then visu...

Page 4: ...measure voltage between Negative and VCC lugs on the DC fuse board See fig A Voltage should read between 13 6 to 13 7 volts DC a If converter does not read within this voltage range then replace the converter b If converter does read within this voltage range proceed to Step 2 Step 2 Turn off main breaker Reduce load in RV by turning off as many 12 DC items lights etc as possible Go to the battery...

Page 5: ... or accident or any WFCO product installed in a commercial vehicle Any WFCO product whose serial number has been defaced altered or removed Any WFCO product whose installation has not been in accordance with the WFCO written instruction Any consequential damages arising from the loss of use of the product including but not limited to inconvenience loss of service loss of revenue loss or damage to ...

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