Dryer high-limit thermostat part #3977767 WP3977767 replacement for Whirlpool Kenmore Maytag
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Dryer High-Limit Thermostat Replacement – Compatible with Part #3977767 / WP3977767

Part Number / SKU Contact for OEM
Compatible Brands Whirlpool, Kenmore, Maytag, KitchenAid, Amana (Universal Fit)
Primary Appliance Household Appliance
Material Heavy-Duty ABS Plastic / Steel
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Protect your dryer from overheating and restore normal heat cycles with this high-limit thermostat replacement. Designed to directly replace Part #3977767 and WP3977767, this resettable safety switch cuts power to the heating element when internal temperatures climb past safe limits, then resets once the dryer cools down. It is the correct fix when your dryer runs but produces no heat, gets too hot, shuts off mid-cycle, or takes too long to dry.

Key Features:

  • Exact Fit Replacement: Engineered to match OEM specs for Part #3977767 and WP3977767.

  • Resettable Safety Device: Opens at 221 degrees Fahrenheit and closes again at 141 degrees Fahrenheit (80F differential), unlike a one-time thermal fuse.

  • 3-Wire Terminal Design: Includes 1/4 inch male, 3/16 inch male, and 1/4 inch female push-on connectors with an extended terminal arm for easy slide-on installation.

  • Fixes Overheat Symptoms: Solves no heat, not enough heat, dryer too hot, shuts off too soon, and timer will not advance.

  • Durable Housing: High-temperature rated plastic body with brass terminals built for repeated cycling on the heater assembly.

Specifications:

  • Part Number: 3977767 (Cross-references WP3977767, WP3977767VP, AP6009043, 3399693, PS11742185, ER3977767, SET185, TJ90SET185)

  • Type: High-limit thermostat (resettable)

  • Trip Temperature: Opens 221F, closes 141F

  • Terminals: 3-wire, 1/4 inch male + 3/16 inch male + 1/4 inch female

  • Mounting: Slides onto heating element terminal or mounts on heater housing, no screws required on old-style models

  • Quantity: 1 piece per order

Compatibility & Fitment:

Fits many electric and gas dryers from Whirlpool, Kenmore (110 prefix), Maytag, Roper, Estate, Amana, KitchenAid, Crosley, Inglis, Admiral, and Magic Chef. Common model families include 110, LEB, LEQ, WED, MED, CED, GEQ, and KEYS. Always confirm your original thermostat reads 3977767 or WP3977767 before ordering.

Common Symptoms This Fixes:

  • Dryer runs but no heat

  • Dryer overheats or smells hot

  • Dryer shuts off before clothes are dry

  • Heating element stays on too long

  • Timer or auto-dry cycle will not advance

Installation Tips:

  1. Unplug the dryer from the wall outlet before starting.

  2. Remove the rear panel to access the heater housing.

  3. Locate the high-limit thermostat on the exhaust duct or heater box near the heating element.

  4. Test the old thermostat with a multimeter for continuity at room temperature. No continuity means it has failed open.

  5. Slide off the old connectors, transfer the thermostat, and push the wires back onto the new terminals.

  6. Reassemble the panel and run a test cycle.

Important Note:

A failed high-limit thermostat is usually triggered by restricted airflow. Before or during replacement, always clean the lint screen, inspect the exhaust duct for blockages, and check the blower wheel. Skipping vent cleaning will cause the new thermostat to trip again.

Package Includes:

  • 1 x Dryer High-Limit Thermostat 3977767