Thermador C/CM/CJ Wall Oven F22 Upper CANCEL Key Shorted Low

What F22 means

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.

Usual causes of F22

Display board to touch panel connections
Control display board, touch panel, or both, if the connections check out

✓ A safe check worth trying

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.

! Why you should stop here

Low and high shorts need a meter to separate
Opening a panel on a built-in oven exposes live parts
We quote in writing and confirm legacy parts by model number

Taking off a panel yourself does not by default void a manufacturer warranty, yet it can lead to accidental damage, and some manufacturers attach their own service terms. Read your warranty paperwork, or ask us, before you decide.

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More Oven codes

F20F20 on Thermador C-Series Upper Ovens: CANCEL Key Shorted High F60Legacy Thermador Wall Oven, C/CM Series, Shows F60: Lower Oven Sensor Shorted F7Legacy Thermador Wall Oven, SC/SM Series, Shows F7: Stuck Key on the Touch Panel F21Legacy Thermador CM/CJ Lower Oven Showing F21: Lower CANCEL Key Shorted High F61Reading F61 on Older Thermador C/CM Wall Ovens (Lower Oven Sensor Open) F8Reading F8 on Older Thermador SC and SM Wall Ovens (Shorted Meat Probe Circuit) F23Lower CANCEL Key Shorted Low: Thermador Older C-Series Oven F23 F62Thermador Wall Oven F62 on Legacy C/CM-Series Ovens: Lower Oven Overheat During Cleaning

F22F22 questions

What is the difference between shorted high and shorted low?

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.

Is F22 dangerous?

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.

Could a child touching the panel cause it?

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.