Error 59 — Gas heat section 1 energized/de-energized three times

What does 59 mean?

This error code is displayed when the gas valve for gas heat section 1 is energized and then de-energized three times (default setting) during a single heating demand.

• Intermittent issues with the gas valve in section 1.
• Faulty ignition or flame sensor.
• Parameter 73 (MAX GV SENSE OCC) may be set too low.
• Inconsistent heating demand signal.

Click steps to track your progress.

1. 1

   Check the setting of Parameter 73 (MAX GV SENSE OCC) for the number of allowed occurrences.

2. 2

   Inspect the gas valve and related ignition components in section 1.

3. 3

   Ensure consistent heating demand signals.

4. 4

   Consider adjusting Parameter 73 if appropriate and understood.