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Lochinvar "out of sequence A and B"
I have 2 CFN1442PM boilers. They were both tied to the same neutral and i would get only one lock out on the sequence. Pulled another neutral to separate. I do not read any voltage on the neutral for either. Heat exchangers are clean. New gas valve on one and all new hSI all around. Made sure no breaks or shorts in wiring. Today both boilers were locked out on out of sequence...