CF

Heat-exchanger outlet temperature sensor is open or shorted.

What it means

Heat-exchanger outlet temperature sensor is open or shorted.

This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.

Have service test the heat-exchanger sensor connection before control-board work.

Manufacturer source

Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.

If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.