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Errors


Boiler type EF-100T-199E-3N

Error code 4

Cause:

Low Flame Sense Current 

Solution:

Determine flame sense current in the Service Mode with the water heater operating. If less than 4.0 microamps, check burner flame sense rod and wire. Clean flame sense rod with emery cloth.  If problem is not solved, check for debris clogging burner or replace flame sense rod.