Kenmore Cooktop E2 Error: IGBT Power Module Overheat
The kenmore cooktop e2 error is a fault signal from the control board — this guide walks through what it means, common causes, and safe diagnostic steps. What Does Kenmore Cooktop Error Code E2 Mean? E2 on a Kenmore Elite induction cooktop (790.4xxxx LG-made models) means the IGBT power module driving the affected induction zone […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. After a successful 20-minute cool-down and clearance of E2, the cooktop is safe to use at reduced power levels on the affected zone. If E2 returns within 30 minutes of moderate cooking (power level 5 or below), the IGBT module has degraded and the cooktop should not be used until serviced.
Can I reset the code?
Yes. E2 is a thermal protection response, not a permanent hardware fault. Once the IGBT module cools below its reset threshold, the control board clears E2 automatically — the zone becomes available again without requiring a manual reset. If E2 is caused by a failing IGBT, it will recur progressively more quickly with each use.
When to stop immediately?
Stop if you notice: E2 returns within 30 minutes of restarting the cooktop even at moderate power levels (5 or below), A burning smell or visible discoloration on the glass surface above the zone is present.
Symptoms You May Notice
E2 appears during or immediately after a high-power cooking session
The code typically triggers on the zone that has been running at power level 8 or above for an extended period — the IGBT module that drives the coil overheats when sustained high current is combined with inadequate ventilation underneath the cooktop.
Affected zone shuts off mid-cook and will not restart immediately
The zone becomes inactive with E2 on the display and will not respond to touch inputs even when a compatible pot remains on the zone. The cooktop may restart the zone automatically after a 15–30 minute cool-down if the IGBT temperature drops into the safe range.
Cooktop fan (if present) runs at maximum speed
Kenmore Elite induction models with a built-in cooling fan increase fan speed to maximum when E2 is set, audibly spinning faster than normal in an attempt to cool the IGBT module.
Glass surface over affected coil feels hotter than usual
The ceramic glass directly above the shut-down zone remains unusually hot to the touch well after E2 appears, as residual heat from the overheated IGBT module conducts up through the coil assembly into the glass from below.
Possible Causes
Blocked or insufficient ventilation beneath the cooktop
The cooktop's cooling airflow path — through the bottom vents and across the IGBT heat sink — is obstructed by debris, grease accumulation, or an undersized cabinet cutout that prevents adequate air circulation.
DIY PossibleSustained high-power operation exceeding the duty cycle
Running a single zone at maximum power for more than 60–90 continuous minutes, particularly in a warm kitchen or enclosed installation, can cause the IGBT module to reach its thermal trip point even with clear ventilation.
DIY PossibleFailed or degraded IGBT power module
The IGBT transistor has degraded over time and now runs hotter than specification at normal power levels — the module trips E2 even during moderate cooking sessions that previously did not trigger the fault.
Requires ProfessionalSafe Checks You Can Do
-
1
Allow a 20-minute cool-down and check ventilation clearances
Switch the cooktop off and allow it to cool for at least 20 minutes before attempting to use the affected zone again. While cooling, check that the cabinet below the cooktop (if installed in a cutout) has at least 2 inches of clearance on all sides per Kenmore's installation specification, and that no items stored in the cabinet are blocking the bottom vents. Remove any obstructions and restore power.
If E2 triggered during sustained high-power use, reduce the power level by one or two steps (e.g., from level 9 to level 7) for long-duration cooking. Induction IGBT modules are rated for full power in short bursts, not extended continuous operation at maximum.
-
2
Clean the underside vents and heat sink fins
Switch off the cooktop at the circuit breaker. Lift the cooktop out of the countertop cutout and use a can of compressed air or a soft brush to remove grease and dust from the bottom vent openings and from the aluminum heat sink fins attached to the IGBT module on the control board assembly. Even a thin layer of grease on the heat sink fins significantly reduces their cooling efficiency.
Grease mist from cooking rises and settles in the bottom vents over years of use — this is the most common cause of progressive E2 faults on units that initially operated without issues. Annual cleaning of the vents extends IGBT service life.
Tools required
When to Call a Professional
Contact a qualified technician if:
- E2 triggers within 10 minutes of moderate cooking after cleaning all vents and confirming correct installation clearances
- The IGBT heat sink is discolored (dark brown or black) or the thermal paste between the IGBT and heat sink is dried out and cracked
- Resistance across the IGBT gate-to-emitter terminals is outside manufacturer specification on a component-level test
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Cooktop Repair Service Schedule Appointment