Seeing F84 on an older Thermador C-series, CM-series or CJ302 double oven means the lower latch input is reading as shorted. The control cannot trust the line that says whether the bottom door is locked, so…
Seeing F84 on an older Thermador C-series, CM-series or CJ302 double oven means the lower latch input is reading as shorted. The control cannot trust the line that says whether the bottom door is locked, so it halts that cavity. It completes the lower-door group that begins at F80. Latch switches and their wiring are the first things a technician examines.
1. Press OFF, or flip the oven breaker. 2. Leave the power off for 3 minutes before restoring it. 3. See whether F84 returns on the display. 4. If it does, record the code and model number, keep the lower door closed, and call us.
Typically a tired switch, a squeezed wire, or a plug that has moved. The control sees the line bridged and cannot read the latch, so it stops.
Yes. F54 covers the upper latch input and F84 the lower one. They use different headers, so each is tested on its own.
We test the door and latch signals before handing the oven back. The quote is in writing before work begins, and repairs are backed by 30 days of workmanship cover.
Our technician checks it in your home and hands you a written price before touching anything.