E49 - Meaning

Occurs when the control senses a false flame signal on the electrode

Possible Reasons:

  • Contamination of the electrode with carbon deposits, conductive liquids (leak detection spray) or similar.
  • Contamination of the rear of the valve where the thermocouple and ignition cable connect to the valve with conductive liquids (leak detection spray) or similar.

  • Note: It is critical to avoid leak detection fluid to contact any part of the valve other than the threads where the pipe connects. Leak detection fluids are highly corrosive and will damage any electronics they come into contact with. Other forms of leak detection should be used.

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