Errors

Boiler type KB211

Error code Flue temp limit

Cause:

The stack temperature has exceeded the Flue Temp Limit set parameters.

Solution:

- Inspect the heat exchanger.
- Inspect the flue sensor and associated wiring. Measure the resistance of the flue sensor. Replace the sensor if necessary.
- Verify that the vent/air intake pipes are properly installed and that there are no obstructions.
- Replace the main control board.