A129 - Upper element relay failure to close error

What does A129 mean?

The control board's relay for the upper heating element has failed to close, disabling the heater. Check wiring and component resistance.

• Control board relay failure
• Wiring issue

Click steps to track your progress.

1. 1

   Turn off the power supply to the unit.

2. 2

   Examine the wiring connections.

3. 3

   If wires are properly connected, check the resistance reading.

4. 4

   Replace the control board if the resistance is within limits, otherwise replace the relay.