When
Active pre-heater is defective
Parts required
Active pre-heater
Preparations
CAUTION
Hot surfaces
The column compartment and pre-heater may be hot. Touching hot parts might cause burns. Allow the column compartment and the pre-heater to cool down before starting the service procedure.
Follow these steps
Detach the column holder from the active pre-heater fitting.
Disconnect the active pre-heater from the column.
Disconnect the pre-heater cable from the pre-heater port that is located next to the lower switching valve.
Remove the pre-heater cable from the pre-heater cable clip that is located above the pre-heater connection port.
Replace the defective pre-heater.
Connect the new pre-heater to the column. For instructions, see Connecting and Placing the Active Pre-heater.