Monogram Cooktop E5 Error: Power supply fault / voltage error
The E5 error code on a GE Monogram cooktop indicates a power supply fault or voltage error. The control board has detected that the incoming supply voltage is outside the acceptable operating range — either too high, too low, or fluctuating in a way that could damage the power electronics or induction coils.
~15%
DIY Fixable
From $200
Typical Repair Cost
1-2 hrs
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Do not operate the cooktop while E5 is active. An unstable supply voltage can damage the power electronics and induction components, turning a temporary voltage fault into a permanent hardware failure.
Can I reset the code?
No. Resetting the circuit breaker may clear E5 if a partially tripped breaker was the cause. If the voltage supply or internal power board has failed, the code returns on every restart.
When to stop immediately?
Stop if you notice: Stop using the cooktop if E5 returns after a breaker reset and no household voltage issues are detected., Stop all use and call an electrician if other high-power appliances on nearby circuits are also behaving erratically..
Symptoms You May Notice
Cooktop shuts off unexpectedly during cooking, with E5 displayed on the zone or main control panel.
Cooking zones do not energize when selected, even though the cooktop control panel is responsive.
E5 appears immediately at startup or within seconds of selecting a cooking zone.
Other high-power appliances in the kitchen are also experiencing issues, suggesting a household voltage problem.
Possible Causes
Low or unstable household supply voltage — utility power fluctuations, a weak leg in a 240V circuit, or a failing service connection delivering voltage outside the required range.
Requires ProfessionalTripped or failing circuit breaker on the cooktop dedicated circuit — a breaker that has partially tripped delivers degraded voltage to the appliance.
DIY PossibleFaulty internal power board on the cooktop — the inverter or power supply module has developed a fault that causes it to report a voltage error.
Requires ProfessionalSafe Checks You Can Do
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1
Check the circuit breaker
Go to the electrical panel and locate the dedicated 240V double-pole breaker for the cooktop. Switch it fully OFF and then firmly back ON. A breaker that has partially tripped will appear to be in the middle or slightly off-center position.
A double-pole breaker must be switched to the OFF position before resetting to the ON position — do not just push it toward ON from the middle position.
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2
Test voltage at the outlet or terminal block
Using a multimeter set to AC voltage, test the cooktop outlet or terminal block (with the cooktop disconnected). A 240V cooktop requires 220 to 240 volts across both legs and 110 to 120 volts from each leg to neutral. A reading significantly below this range confirms a voltage supply problem.
Voltage testing on a 240V circuit involves exposure to dangerous live conductors. Only perform this check if you are fully comfortable with electrical safety procedures, otherwise call an electrician.
When to Call a Professional
Contact a qualified technician if:
- Voltage at the cooktop outlet measures significantly below 220 volts on either leg, indicating a utility or home wiring fault requiring an electrician.
- Voltage at the outlet is correct but E5 persists, pointing to a failed internal power board that a certified appliance technician must replace.
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