mypros+
Error code reference

Kenmore Range Error Code 30

AC input voltage too high at the Induction Housing Assembly (left side cooking zones).

Kenmore codesKenmore range codes

AC input voltage too high at the Induction Housing Assembly (left side cooking zones).

First step from the service manual

Measure the house voltage at the main incoming connections on the Large Filter Circuit Board, between terminals X1,X2 and X4,X5; the voltage should be 240VAC.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for 30.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 30 means on a Kenmore range

Error code 30 on a Kenmore induction range indicates that the AC input voltage detected at the left-side Induction Housing Assembly is reading above the acceptable threshold. Induction cooking systems are sensitive to line voltage variations because the power electronics inside the housing, including the inverter boards and control circuitry, are designed to operate within a defined voltage window. When the incoming voltage rises beyond that window, the system flags code 30 as a protective measure to prevent damage to internal components.

The first place to measure is at the Large Filter Circuit Board, which serves as the primary AC distribution point for the induction system. Technicians should check the voltage between terminals X1 and X2, and also between terminals X4 and X5. The expected reading is 240VAC. A reading significantly above 240VAC points to a utility supply issue or a wiring problem upstream of the appliance, while a reading within spec suggests the fault may originate in the sensing circuitry of the Induction Housing Assembly itself.

Common root causes include utility overvoltage events, loose or corroded connections that create voltage irregularities, a failing Large Filter Circuit Board that misreads or fails to condition the incoming voltage, or a defective left-side Induction Housing Assembly with faulty voltage sensing. Intermittent high-voltage events from the utility grid, sometimes caused by a dropped neutral on the service entrance, can also trigger this code without producing a persistently elevated reading at the time of measurement.

Source: manufacturer service documentation.

Common causes of 30

  1. 01

    Utility overvoltage from the power grid

    Wiring / connection

    The voltage supplied by the utility company can occasionally spike or run persistently high, exceeding the 240VAC nominal level the range requires. Measuring voltage at the Large Filter Circuit Board terminals X1/X2 and X4/X5 with a true-RMS meter while the error is active will confirm this.

  2. 02

    Dropped or loose neutral at the service entrance or range circuit

    Wiring / connection

    A lost neutral connection in the home's electrical panel or at the range's terminal block can cause legs of the 240V supply to become unbalanced, pushing one leg to an elevated voltage. Inspect the neutral conductor at the main panel and at the range connection point for corrosion, looseness, or breakage.

  3. 03

    Faulty Large Filter Circuit Board

    Part replacement

    The Large Filter Circuit Board conditions and distributes AC power to the induction system. If this board develops a fault, it can report or pass an incorrect voltage signal that triggers code 30 even when house voltage is normal. If terminal measurements read 240VAC and no supply issues are found, the board should be evaluated for replacement.

  4. 04

    Defective left-side Induction Housing Assembly

    Part replacement

    The Induction Housing Assembly on the left side contains voltage sensing circuitry that feeds data to the control system. A failure in this sensing circuit can produce a falsely elevated voltage reading and trigger code 30 without any actual overvoltage condition present at the terminals.

  5. 05

    Loose or corroded wiring connections at the range

    Wiring / connection

    Poor connections at the range's power terminals or between the Large Filter Circuit Board and the Induction Housing Assembly can cause voltage irregularities. Inspect all terminal connections for discoloration, oxidation, or looseness and reseat or replace any suspect wiring.

See the test procedure for each cause

Frequently asked questions about 30

What does 30 mean on a Kenmore range?
Error code 30 on a Kenmore range means the control system has detected an AC input voltage that is too high at the left-side Induction Housing Assembly. This is a protective fault that shuts down the affected cooking zones to prevent damage to the induction electronics. The first diagnostic step is to measure the incoming voltage at the Large Filter Circuit Board terminals X1/X2 and X4/X5, where the reading should be 240VAC. A significantly elevated reading points to a supply or wiring issue.
Is it safe to use my Kenmore induction range while code 30 is showing?
No, it is not recommended to continue using the range while error code 30 is active. The code indicates a potentially damaging overvoltage condition at the left-side cooking zones, and operating the induction system under these conditions could cause permanent damage to the inverter boards or other internal components. The range should remain unplugged or turned off at the breaker until the voltage supply and internal components have been properly inspected.
Will resetting the Kenmore range clear error code 30?
Cycling the range's circuit breaker or disconnecting power may temporarily clear code 30, but the error will return if the underlying cause has not been corrected. If the house voltage is genuinely running too high, or if the Large Filter Circuit Board or Induction Housing Assembly has a fault, the code will reappear once the unit powers back up. A reset is only a useful diagnostic step to confirm whether the fault is persistent or intermittent, not a permanent fix.
How do I fix error code 30 on my Kenmore range?
Begin by measuring the AC voltage at the Large Filter Circuit Board between terminals X1/X2 and X4/X5 using a true-RMS multimeter. If the voltage exceeds 240VAC, contact your utility company and a licensed electrician to address the supply issue. If voltage is within spec, the fault likely lies with the Large Filter Circuit Board or the left-side Induction Housing Assembly, either of which may need to be replaced. Loose or corroded wiring connections throughout the supply path should also be inspected and corrected.
How much does it cost to repair a Kenmore range showing error code 30?
Repair costs vary depending on the root cause. If the fault is a utility overvoltage or a wiring connection issue, costs may be limited to an electrician's service call, typically in the range of $75 to $200. If internal parts are needed, a Large Filter Circuit Board or Induction Housing Assembly replacement plus labor can bring total repair costs to anywhere from $200 to $600 or more, depending on parts availability and local labor rates.

Related Kenmore range codes

All Kenmore range codes
View all 159 Kenmore range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass