Jim: With the EIS-P200 system, the electrode provides not only the spark to light the pilot but also the flame rectification that tells the control module that the pilot flame exists and that it is okay to send gas to the main burner. Any time the pilot flame does not remain on the electrode when unit is on, the control module will shut down the flow of gas to the main burner. If the pilot flame alternates between touching (engulfing) and not touching the electrode, the main burner will cycle ON and OFF, which I suppose is the “puffing”.

Attached is a photo of the electrode and pilot assembly with the proper relationship between the electrode and pilot. Some adjustment may need to be made on your customer’s unit, based on observing the actual pilot flame relationship to the electrode. Please contact me if you have any questions. Sincerely, Rett Rasmussen

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