What E43 Means
The open-circuit versions of E40 to E42. Wolf's Induction Cooktop Technical & Service Manual lists E43, E44 and E45 for burner sensors reading open on generators 1, 2 and 3 respectively, with the affected burner shutting down each time and the generator board named as the repair.
Common Causes of E43
- A surface temperature sensor that has gone open circuit
- A sensor lead broken or unplugged beneath the glass
- A generator board problem in the sensing circuit for that burner
🔧 One Safe Check You Can Try
Note how soon after selecting the zone it drops out, and whether it happens at every power level or only at high. That timing is what distinguishes a permanently open sensor from a connection that opens as things heat.
⚠ Why You Shouldn't Go Further Than That
- The sensor circuit runs under a bonded glass top above high-current induction electronics.
- An open sensor removes the overheat protection for that zone, which is why the control disables it rather than allowing it to run unwatched.
- The generator board is a costly part and the manual names it, so confirming which of the three is involved is worth the diagnostic.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.