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Error code reference

Kenmore Dryer Error Code nP

Electric dryer power cord is not connected correctly, or house power supply is incorrect, or house fuse is…

Kenmore codesKenmore dryer codes

Electric dryer power cord is not connected correctly, or house power supply is incorrect, or house fuse is blown, circuit breaker has tripped, or power outage has occurred.

First step from the service manual

Check the power supply or the connection of power cord to the terminal block.

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

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What nP means on a Kenmore dryer

The nP error code on a Kenmore electric dryer indicates that the appliance is not receiving correct electrical power. Electric dryers in the United States require a 240-volt supply delivered across two separate 120-volt legs from the home's electrical panel. If either leg is missing or significantly reduced in voltage, the dryer's control board detects the imbalance and displays nP to alert the user. This condition prevents the heating element from operating safely and, in some cases, may prevent the drum motor from running at all.

The most common hardware cause is an improperly connected power cord at the terminal block, which is the connection point at the rear of the dryer where the 3-wire or 4-wire cord attaches to the unit. Loose, reversed, or incomplete connections at this block can interrupt one leg of the 240-volt supply. Beyond the dryer itself, the issue may lie entirely within the home's electrical system. A blown fuse or tripped double-pole circuit breaker in the main panel is a frequent culprit, as is a brief power outage that left the breaker in an intermediate position.

Diagnosing nP should begin with a visual and functional check of the power supply before opening the dryer. Confirm that the circuit breaker is fully in the ON position by switching it fully off and then back on. If the breaker holds and the error persists, inspect the terminal block connections at the rear of the dryer for secure, properly torqued wiring. A multimeter can be used to confirm that 240 volts is present at the outlet and that both legs are live.

Source: manufacturer service documentation.

Common causes of nP

  1. 01

    Tripped circuit breaker

    Wiring / connection

    Electric dryers use a double-pole 240-volt breaker. If one or both poles have tripped, the dryer will display nP. Locate the dryer's breaker in the main panel, switch it fully to OFF, then back to ON to reset it.

  2. 02

    Loose or incorrect power cord connection at terminal block

    Wiring / connection

    The power cord connects to a terminal block at the rear of the dryer. A loose wire, an under-torqued screw terminal, or an incorrectly wired cord can interrupt one leg of the 240-volt supply and trigger nP.

  3. 03

    Blown house fuse

    Part replacement

    Older homes with fuse panels use two fuses to supply 240 volts to the dryer. If either fuse has blown, one leg of power is lost. Inspect both fuses in the panel and replace any that have blown.

  4. 04

    Faulty or incompatible power cord

    Part replacement

    A damaged power cord or one that is not rated for the dryer's amperage requirement can result in an incomplete circuit. Inspect the cord for visible damage, melted insulation, or loose prongs at the plug end.

  5. 05

    Power outage or low utility voltage

    Wiring / connection

    A power outage or a brief drop in utility voltage can trigger nP. If power has recently been restored, the breaker may have tripped during the outage and will need to be reset before the dryer clears the code.

See the test procedure for each cause

Frequently asked questions about nP

What does nP mean on a Kenmore dryer?
The nP code means the dryer is detecting that its electrical power supply is incorrect or incomplete. Electric dryers require a full 240-volt supply across two legs of power. The code appears when one or both legs are missing, which can be caused by a tripped breaker, a blown fuse, a power outage, or an incorrectly connected power cord at the terminal block on the back of the dryer.
How do I fix the nP error code on my Kenmore dryer?
Start by checking the circuit breaker in your home's electrical panel. Switch the dryer's double-pole breaker fully to OFF and then back to ON. If the breaker holds, inspect the power cord connection at the terminal block on the rear of the dryer to make sure all wires are secure and properly seated. If those steps do not resolve the code, test the outlet with a multimeter to confirm 240 volts is present across both legs.
Will resetting the dryer clear the nP code?
Simply resetting the dryer's control board will not clear nP if the underlying power supply issue has not been corrected. The code is generated by the control board detecting a missing or insufficient voltage leg, so the power supply problem must be resolved first. Once proper 240-volt power is restored, the code should clear on its own when the dryer is powered back on.
Is it safe to use my Kenmore dryer when it shows nP?
No, you should not attempt to operate the dryer while the nP code is active. An incomplete power supply can cause the heating element to malfunction or prevent the motor from running correctly. More importantly, loose wiring at the terminal block or a failing connection can create a fire or shock hazard, so the power supply issue should be inspected and corrected before resuming use.
How much does it cost to fix the nP error on a Kenmore dryer?
The repair cost depends on the cause. Resetting a tripped breaker costs nothing. Replacing a blown fuse typically costs just a few dollars for parts. If the power cord needs to be replaced, parts generally range from $15 to $40 depending on whether a 3-wire or 4-wire cord is required. If a licensed electrician is needed to inspect or repair the home's wiring or outlet, labor costs can range from $75 to $200 or more depending on your location and the complexity of the work.

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