Electrolux Professional CntC

What does Electrolux Professional CntC mean?

CntC indicates a failure of the SkyLine oven's cavity SSR NTC temperature sensor (NTC3), which monitors the solid-state relay area for the cavity. Cooking stops on this alarm. The control can no longer read that temperature reliably, usually because of a connector fault, a failed NTC sensor, or an ACU fault.

Symptoms

• CntC displayed and cooking stops
• Cavity SSR temperature not read
• NTC3 sensor reported failed
• Oven needs a restart to clear

Common causes

• Connector failure
• NTC sensor failure
• ACU failure

Diagnostic steps

1. 01

   Restart the oven

   Restart the oven, as the manual lists this as the first action.

2. 02

   Watch whether it returns

   If the alarm clears on restart, monitor for recurrence which indicates a real sensor fault.

3. 03

   Inspect the connector area

   A failed connector on NTC3 is a common cause; this is a service inspection point.

4. 04

   Call Service if it persists

   If the error persists, call Service to repair the sensor or board.

When to call a professional

If CntC persists after a restart, contact an Electrolux Professional service centre. The NTC3 cavity SSR sensor, its connector and the ACU control board are internal electrical components that require trained diagnosis. Because the sensor governs solid-state relay temperature control for the cavity, running with a faulty NTC3 risks heat-control problems, so professional repair is appropriate.