F5 on a legacy ESC30 or GSC30 range is the mirror of F1: the supervisory relay that should enable heating is open, so the oven never gets the go-ahead. The legacy document's remedy is direct: replace…
F5 on a legacy ESC30 or GSC30 range is the mirror of F1: the supervisory relay that should enable heating is open, so the oven never gets the go-ahead. The legacy document's remedy is direct: replace the relay board. Newer Thermador ovens use F5 differently, so this applies to the older 30-inch ranges only. The display shows F5 until it is cleared.
1. Turn the oven off and press Cancel. 2. Switch the range breaker off for a minute, then back on. 3. Try a short bake setting. 4. If F5 shows again, stop and call us; the relay board needs replacement by a technician.
It means the oven is being held back from heating, which is the safe direction. The oven simply will not work properly until the relay board is dealt with.
No. That would defeat a safety supervisor, and we never do it. We replace the board if testing confirms it, after you approve the written quote.
The legacy document gives a single remedy, replacing the relay board. We still test first to confirm, so you only pay for what the range needs.
Our technician checks it in your home and hands you a written price before touching anything.