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Error code reference

Wolf Cooktop Error Code E31

Generator 1 burner (R, RR, RC) 'ON LED' Failure; affected burner is not available.

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What the E31 error code actually means

Your Wolf cooktop is showing E31 because a small status light that indicates when the right-side burner is on has stopped working. As a safety measure, the cooktop has disabled that burner until the issue is fixed. A technician can run a quick light test to determine whether the unit just needs a reset or whether a part needs to be replaced.

Diagnostic procedure

The full E31 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

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1
First diagnostic step
Perform LED test #1; if all LEDs work, reset error. If one LED fails, replace Glass Assembly.
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Most common causes of E31

Ranked by how often they cause this code
  1. 1Failed ON LED in the Glass Assembly
  2. 2Transient Control System Fault
  3. 3Loose or Damaged Wiring Connection
  4. 4Cracked or Damaged Glass Assembly
  5. 5Control Board Output Failure

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Questions people ask about E31

What does E31 mean on a Wolf cooktop?
E31 indicates a failure in the ON LED for Generator 1 burner zones, which covers the Right, Right Rear, and Right Center burner positions. The cooktop disables the affected burner when this error appears because it cannot confirm proper status indication. The fix depends on whether the LED has physically failed or whether the error was caused by a temporary electronic fault.
Is it safe to use my Wolf cooktop while E31 is active?
The cooktop automatically disables the affected burner zones (R, RR, RC) when E31 is present, so those specific burners will not operate. Other burner zones not associated with Generator 1 may still function normally. It is best to resolve the error before relying on the cooktop for regular use, and you should not attempt to override the fault.
How much does it cost to repair a Wolf cooktop E31 error?
If only a reset is needed after a successful LED test, there is no parts cost and labor is minimal. If the glass assembly requires replacement, parts costs for Wolf glass assemblies typically range from several hundred dollars into the higher hundreds depending on the specific cooktop model, with additional labor costs on top of that. Diagnosing whether the issue is a simple reset or a parts replacement will help you get an accurate estimate from a service provider.
Can I fix E31 on my Wolf cooktop myself?
Running LED Test 1 and performing a reset are steps a knowledgeable DIYer can attempt. If the test shows a failed LED, replacing the glass assembly requires disassembly of the cooktop and comfort working with integrated electronic components, so many owners prefer to have a qualified technician handle that repair. Wiring connections can also be checked and reseated if you are comfortable working inside the appliance with the power disconnected.
Will resetting the cooktop clear the E31 error?
A reset can clear E31 only if the underlying LED hardware is still functioning correctly. The recommended process is to perform LED Test 1 first: if all LEDs pass, a reset should resolve the error. If one LED fails the test, the fault is a hardware failure and a reset will not permanently clear the code because the glass assembly needs to be replaced.

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