Thermador Pro-Harmony Range with Five-and-Five Blue Lights: E14 Selector Switch Error

What E14 means

Five blue oven-light flashes followed by five heating-light flashes on an older Thermador Professional Series range (PDR or PRG, 30, 36 or 48 inch) means E14, a selector switch error. The control is getting a reading from the mode selector that does not make sense, so it cannot be sure which function you picked. Newer Thermador units attach another meaning to E14.

Usual causes of E14

Selector switch giving an invalid reading
Selector switch wiring or contacts

✓ A safe check worth trying

1. Turn the selector to off and count the pattern: five, then five. 2. Wait a few minutes with the oven off. 3. Restore breaker power and turn the selector gently to one setting. 4. If the pattern shows again, stop using the oven and call us.

! Why you should stop here

A wrong mode reading could start the wrong heating element.
The switch is part of the control assembly, reached through the panel.
We confirm the failing switch before quoting any replacement.

Taking off a panel yourself does not by default void a manufacturer warranty, yet it can lead to accidental damage, and some manufacturers attach their own service terms. Read your warranty paperwork, or ask us, before you decide.

→Same appliance

More Range codes

E7Cleaning Cycle Stopped by E7 on a Legacy Thermador Pro-Harmony Range (Code 23) E7010Thermador Induction Range Cooktop E7010: Wi-Fi or Hood Connection Lost E9Legacy Thermador Range E9: No Cooling Fans, Blue-Light Code 43 E9000 / E9010Thermador Induction Range Cooktop E9000 / E9010: Supply Voltage Out of Range E11Older Thermador Pro-Harmony Range E11 and Light Code 44: Door Latch Problem U400Thermador Induction Range Cooktop U400: Supply Voltage Out of Range E12Thermador Pro-Harmony Range E12 (Light Code 11) - Expansion Board Not Connected F1 / F6Thermador Induction Range Cooktop F1 / F6: Cooking Zone Overheated

E14E14 questions

What does the selector switch actually do?

It tells the control which cooking mode you chose, such as bake or broil. If its signal is wrong, the control reports E14 rather than guess.

Does turning the knob harder help?

No, forcing it risks breaking the switch. Gently set it to off and let us test it. Pressing harder only adds to the damage on an older range.

Is this repair worth it on an older range?

That depends on the quote and the range. We give you a written price after diagnosis so you can decide with real numbers rather than guesses.