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Posted by HeatPro on May 11, 2005 at 17:53:27:
In Reply to: Vaillant Ecomax condensing combi F30 code posted by Ian on May 11, 2005 at 16:22:19:
No matter what the code, a gurgling noise would come from water moving erratically through a restriction. Low water flow would keep the flame off. A stuck diverter valve is the most frequent problem other than an igniter problem. A gurgle would be an indication of that.