Removing CONverter Installing INverter on 2011 Fleetwood

http://www.civicsolar.com/product/magnum-energy-ms2012-20b-pure-sine-inverter-20-kw-inverter

Follow the installation instructions in the owner's manual and the supplement to the manual linked at the bottom of this link

It is unlikely that the DC wiring to the battery bank that the WFCO converter used is able to support the draw of that inverter.

You also need to keep or replace the DC run from battery to DC fuse panel that the converter used before so the charger portion of the inverter has a path to the DC panel as well as to the battery bank.

Probably you will need to re-locate the Magnum close to your (expanded for a 2000w inverter) battery bank and run fat wires to the battery bank, then leave the existing DC run from battery to DC fuse panel as the path for now both the battery and the Magnum charger to use to supply the 12v systems.

Once the Magnum is properly located for the 12v DC, then you can do the 120v side.

rrhino2 wrote:
I am Removing the failed WFCO WF-9855 CONverter that came with the unit and Installing a Magnum energy 2012-20B INverter on 2011 Fleetwood Terra. Any help would be appreciated. I cut incoming 120v wire before breaker box and inserted inverter, in and out 120v. The 12v wire from converter has no voltage reading. What am I missing?

By from converter do you mean the 12 volt positive and negative you removed from the converter? Are they now connected to nothing or the new INVerter? I would hope they show nothing as I would hope you disconnected the battery bank or at least turned off the master battery disconnect before starting this job.

More importantly, are you mounting the new INVerter in the same location as the old CONverter using existing wire? This could mean you are going to try and pull hundreds of amps through 10 or more feet of 6 or 8 gauge wire. Not happening!

-Jeff

I cut incoming 120v wire before breaker box and inserted inverter, in and out 120v

Could you describe this a little better?
A few things that would cause the Magnum not to have 13+V at the outputs: Output wires are reversed, Magnum is not powered by 120V, the internal transfer switch did not close, and possibly, the internal GFCI interrupts power to the charging section. Did you measure the absence of voltage at the output terminals of the Magnum or across the battery terminals? If at the battery, is there a circuit breaker, a fuse, or a battery disconnect switch between the Magnum and the battery?

Moved from Forum Technical Support

I'm a little confused about your post. If the converter failed, why would you expect there to be 12volts coming out of it?