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.

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More Range codes

E3E3 on an Older Thermador Pro-Harmony Range (Light Code 10): Open Oven Sensor F8Older Thermador 30-Inch Range Cancels Cooking with F8 (Supervisory Error) E4Thermador Pro-Harmony Range Showing E4 and Light Code 12: Shorted Oven Sensor F9Legacy Thermador ESC30/GSC30 Range with F9: Door Latch Supervisory Error E5Legacy Pro-Harmony Thermador Range E5 Means Potentiometer Failure (Light Code 21) F1Legacy RDF/REF 30-Inch Range F1: Stuck Buttons or Latch Switch E6Thermador PDR/PRG Range E6, Blue Lights 3-then-2: Over Temperature While Cooking F3Legacy RDF/REF 30-Inch Range F3: Open or Shorted Oven Sensor

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.