GE Oven Error Code SUPPLY OPEN NEUTRAL

SUPPLY OPEN NEUTRAL means the oven's power monitor circuit detected that the voltage between the L1 hot leg and the neutral wire dropped below 90VAC during startup, which should normally read close to 120VAC. This indicates the neutral conductor in the oven's electrical supply circuit is either disconnected, broken, or making poor contact somewhere between the main panel and the oven. The oven will not operate normally until the neutral connection is restored.

Yes, an open neutral condition is a serious electrical fault and should not be ignored. An open or intermittent neutral in a 240V circuit can cause unbalanced voltages that may damage the oven's control electronics and other connected appliances sharing the neutral. There is also a potential shock hazard if the neutral wiring is damaged or exposed. Stop using the oven and have the wiring inspected before resuming operation.

If the fix is simply re-tightening a loose terminal at the oven's terminal block or at the wall outlet, a technician visit may cost in the range of $75 to $150 for labor alone with no parts needed. If the supply cable or power cord needs replacement, parts and labor combined typically range from $100 to $250. If the issue originates at the main panel and requires a licensed electrician, costs can range from $100 to $300 or more depending on the complexity of the repair.

Homeowners with electrical experience can safely inspect and re-tighten the neutral wire at the oven's terminal block or at a range receptacle after turning off the circuit breaker. However, any work inside the main electrical panel should be performed by a licensed electrician. If you are not comfortable working with electrical wiring, contact a qualified appliance repair technician or electrician to diagnose and correct the fault.

Resetting the oven by cycling the circuit breaker will not clear this error if the underlying neutral wiring problem still exists. The power monitor checks L1-N voltage during every power-up sequence, so the fault will be detected and displayed again immediately after the reset. The neutral wiring connection must be repaired before the error will clear permanently.