F22 is the opposite reading of F20 on older Thermador C271 through CJ302 ovens: the upper oven's CANCEL key looks shorted low instead of high. The control cannot tell a real touch from a failing connection,…
F22 is the opposite reading of F20 on older Thermador C271 through CJ302 ovens: the upper oven's CANCEL key looks shorted low instead of high. The control cannot tell a real touch from a failing connection, so it posts the code. The legacy table points at the touch panel link and boards. Newer Thermador ovens may attach another meaning to F22.
1. Wipe the glass and surrounding trim dry. 2. Switch off the oven at its circuit breaker. 3. Count a full three minutes before restoring power. 4. If F22 comes back, note it and call us. Anything beyond the exterior, including the ribbon behind the panel, stays with a technician.
The control sees an opposite electrical level. Both indicate the CANCEL pad circuit is not behaving, and the source gives the same checks for each, so the distinction mostly helps our technician.
It is rated low severity in our notes. The oven is not telling you about heat or electrical hazard, only that a key reads wrong. Still, a stuck CANCEL may stop you from ending a cycle, so please have it checked.
A momentary touch would not typically latch a code. A persistent code points to the connection or panel hardware, which is why we inspect rather than just reset.
Our technician checks it in your home and hands you a written price before touching anything.