Written by
Elena Marsh Appliance Care EditorPublished October 29, 2026
VERIFIED
Error code30
ApplianceCooktop
Meaning of 30
Two things can trigger 30: voltage arriving at the cooktop that is too high, or a wiring failure inside it. It sits in the list for Kenmore induction models numbered from 790, which show digits without a letter.
What the manual has you do
Disconnect power.
Inspect the power supply wiring.
Ask an electrician to measure the supply voltage.
If the wiring is sound and the voltage reads normal, the defect lies in either the main power control board or the filter control board. A technician replaces whichever board it is, while the owner’s part ends with the wiring look and the electrician’s measurement.
Code 35: low supply voltage or failed wiring connections, the opposite voltage problem
Code 33: improper voltage output from the filter control board
Induction cooktop service in San Francisco
Once the supply checks are done, a technician can look at the boards. Call (415) 825-6393 for Kenmore cooktop repair in San Francisco and the Bay Area, and have the 30 code, the model number and the results of the wiring and voltage checks ready.
Model compatibility: Kenmore reuses codes across series and model years, so 30 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Code 30 means improper high supply voltage or internal wiring failure.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Kenmore appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Kenmore appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.