replacement convertor again, again & again

[budsgranny]

I have a 2005 Keystone Hornet Retreat for seven years. Out of that seven years I had to replace my 55 amp converter at least 4 times, and every time I replaced it with ITEMS
WFCO WF9855 WF-9855 55 Amp RV Trailer Deckmount Converter Charger Camper Trailer RV. When I got this last converter I put it in and it did not work. I contacted Cheng USA and they said to send it back. After I got it back cause Cheng said it was working in which it did. But only for a month. Now the weather is in the triple digit and I can't get my roof air to come on. Is there some way I can run on just a shoreline? BTW when I send the converter back to Cheng they said it not under warranty even though I had it less that 6 month. Without my battery not connected I have no 12v lights, No air. Please someone please help me.

[geo]

The problem is the thermostat and relays to the AC need 12VDC. You are going to need battery power. Sorry. I would suggest looking at a different brand of converter.

Ron

[f6bits]

I replaced my WFCO converter with the Progressive Dynamics 4655. It was an easy swap out for a much superior converter.
http://www.progressivedyn.com/pd4600...placement.html