A one-flash then one-flash pattern on an older Thermador PDR or PRG range is code 11, which the legacy list calls E12: expansion board not connected. In plain terms, the main control cannot find a second…
A one-flash then one-flash pattern on an older Thermador PDR or PRG range is code 11, which the legacy list calls E12: expansion board not connected. In plain terms, the main control cannot find a second circuit board it expects, so the range stops trusting its own signals. Other generations of Thermador ovens reuse E12 for different problems.
1. Confirm the pattern is one flash, then one flash. 2. Switch the oven off and leave it idle for a few minutes. 3. Restore breaker power and try again. 4. Do not pull the range out to reach connectors; if the pattern stays, book a technician.
It is an extra circuit board that works with the main control. The code says the main control cannot find it, which could be a connection or the board itself.
It is possible for a connection to loosen, but we cannot say from the code alone. A technician checks the connection first and tells you what was found.
We explain the findings and give a written price before any repair work, so you know the plan before approving anything. Nothing starts without your approval.
Our technician checks it in your home and hands you a written price before touching anything.