Wolf CSO Steam Oven Code E46 / F8: relay K4 stays closed

What E46 / F8 means

On Wolf CSO convection steam ovens such as the CSO24 and CSO30 series, E46 with F8 means actuator relay K4 is stuck, or the element or relay board is damaged. The oven detects that the relay did not release properly and stops, showing the pair. You may find the oven will not start any new program.

Common causes of E46 / F8

Actuator relay K4 stuck
Element or relay board damaged

✓ One safe check you can try

1. Switch the oven off at the breaker for one full minute. 2. Turn power back on and watch the display. 3. If E46 / F8 stays away, test with a short cycle. 4. If it reappears, leave the oven off and book service.

! Why to stop there

Identifying which relay and which load is involved takes testing.
A damaged element can mimic a relay problem.
We provide a written quote and a 30-day warranty.

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

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E46 / F8E46 / F8 questions

What is relay K4?

It is one of the actuator relays on the oven's relay board. The code says K4 did not release as it should.

Is E46 the same as E45?

They share F8 and the same kind of problem, but a different relay. We read which one the oven stored.

Can I reset it myself?

You may try a breaker reset. If E46 / F8 returns, a technician should inspect the relay and element.