Wolf CSOP Plumbed Steam Oven Code F24: Drain sump level sensor

What F24 means

F24 applies to the plumbed Wolf steam ovens CSOP2450TM and CSOP3050TM and stands for E78. The official meaning is that the drain sump level sensor is dirty or has a short circuit. Owners see F24 and the oven stops steam operation, because it cannot read the water level in the drain sump. The first recommended step is to flush the drain with plenty of water.

Common causes of F24

Drain sump level sensor pin dirty
Short circuit in the sensor or sensor module

✓ One safe check you can try

1. Let the oven cool. 2. Pour plenty of fresh water into the cavity drain area, as the guide describes, to flush it. 3. Wipe visible residue from the cavity floor. 4. Switch off at the breaker for one minute and back on. 5. If F24 returns, call us.

! Why to stop there

The sensor pin and module are inside the oven.
A short circuit needs electrical testing.
Residue returns if the drain is partly blocked.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Steam Oven codes

F15Wolf CSO Steam Oven Code F15: niche running too hot F1Wolf Convection Steam Oven Code F1: Food probe error F17Wolf CSO Steam Oven Code F17: climate sensor overtemperature F10Wolf Convection Steam Oven Code F10: Control moisture or water tank valve F2Wolf CSO Steam Oven Code F2: water temperature sensor short F13Wolf Convection Steam Oven Code F13: Cabinet opening too hot F3Wolf CSO Steam Oven Code F3: climate sensor short or break F4Wolf CSO Steam Oven Code F4: exhaust slide motor problem

F24F24 questions

Which ovens show F24?

The plumbed CSOP2450TM and CSOP3050TM. They have a drain sump with a level sensor, and F24 points to it. On site we look at drain sump level sensor pin dirty and short circuit in the sensor or sensor module, then quote the repair in writing.

Are F24 and E78 connected?

Yes, it is the F label for the E78 condition, and the checks are the same. Starting point for us is usually drain sump level sensor pin dirty, with the price written down before any work.

When should I call?

If a flush does not clear it, call us. We test the sensor and module and quote the repair in writing first. We would also rule out short circuit in the sensor or sensor module before recommending anything.