Whirlpool Dryer High-Limit Thermostat 3977767 AP6009043 3399693

Dryer High-Limit Thermostat – Whirlpool

Whirlpool Dryer High-Limit Thermostat 3977767 AP6009043 3399693 This dryer high-limit thermostat monitors or controls temperature, power, timing, motor operation, or a safety circuit in the appliance. It is intended as a model-specific replacement for the service part listed below. Confirm the complete appliance model and serial number before ordering. Part-Specific Details Genuine OEM Whirlpool Dryer Hi-Limit Thermostat 3977767 Description Specs. L221 degrees, 3 wire 1/4" male, 3/16" male, 1/4" female dryer hi-limit thermostat. Comes with a terminal extension arm attached. Part Number WP3977767 replaces AP6009043 3977767, 3399693, ER3977767, PS11742185, SET185, TJ90SET185, WP3977767VP. Product Specifications Brand: Whirlpool Primary SKU: 3977767 Product type: Dryer High-Limit Thermostat Application: model-specific dryer repair Verify electrical rating, temperature specification where marked, connector layout, mounting position, and revision Check wiring, terminals, airflow, and the root cause of overheating before replacing a safety device Replaces / Cross-Reference Part Numbers 3977767, AP6009043, 3399693, ER3977767, PS11742185, SET185, TJ90SET185, WP3977767VP, WP3977767 Cross-reference numbers can identify earlier revisions, distributor references, or approved service replacements. Compatibility can vary by production date and model revision. Symptoms of Failure Appliance will not start or heat runs continuously or stops too soon incorrect temperature intermittent operation open safety circuit or related fault code Installation Instructions Disconnect power and, for gas appliances, shut off gas. Photograph and label wire positions, access the component, test the old part and related circuit where appropriate, transfer connectors one at a time without pulling on wires, secure the replacement in the original position, restore all covers, reconnect utilities, and perform a controlled functional test. Compatibility and Safety Confirm fit using the appliance rating label and Whirlpool-family parts diagram. Disconnect power and shut off water or gas when applicable, wear suitable protective equipment, preserve all shields and guards, and use a qualified technician for gas-system work or unfamiliar electrical repairs.

Compatible Part Numbers

• 3977767
• AP6009043
• 3399693
• ER3977767
• PS11742185
• SET185
• TJ90SET185
• WP3977767VP
• WP3977767

Key Features

• Product type: Dryer High-Limit Thermostat
• SKU / MPN: 3977767

Fixes These Symptoms

• Appliance will not start or heat
• runs continuously or stops too soon
• incorrect temperature
• intermittent operation
• open safety circuit or related fault code

Compatible Brands

• Whirlpool

Always verify your complete appliance model number before ordering.

Installation Guidance

Disconnect power and, for gas appliances, shut off gas. Photograph and label wire positions, access the component, test the old part and related circuit where appropriate, transfer connectors one at a time without pulling on wires, secure the replacement in the original position, restore all covers, reconnect utilities, and perform a controlled functional test.