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What is the make and model of your load center? Do you have a small digital multimeter for some testing of the coverter? It sounds like that might be the problem. A good converter should put out about 13.7 VDC with not more than .5 VAC ripple which is some of the AC current bleeding out into the DC circuit. Older converters are well know to have more than 6 or 7 VAC sometimes of ripple. If you have an older Magnetek load center it can be upgraded. Get back to me and I can direct you futher here. All follow ups are included in our fee.
Just checking back to see if you perhaps missed my earlier response to your question? If you already resolved this issue please let me know or if you still need assistance you can repond when you are ready. Thanks!