Whirlpool Dryer Cycling thermostat with internal-bias heater L155-25F WP8318268, Replaces 8318268, 3977425, 3977706

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✅ Cross Reference Information

Common Symptoms

• No heat or insufficient heat
• Dryer runs too hot
• Clothes take too long to dry
• Dryer does not maintain a stable heating cycle
• Dryer may not stop heating when the thermostat contacts remain closed

Check Before Replacing

• Disconnect electrical power before servicing; for gas models, also shut off the gas supply.
• Verify that the lint screen, exhaust duct, and vent outlet are not blocked, since restricted airflow can create symptoms similar to a thermostat problem.
• With power disconnected and the thermostat wires removed, check the thermostat contacts for continuity using a multimeter according to the appliance’s service documentation.
• If the model’s documentation specifies a test for the internal-bias-heater terminals, measure that circuit separately; do not rely on a continuity result from the main thermostat contacts alone.
• Inspect the terminals and wiring for loose connections, discoloration, or heat damage before condemning the thermostat.

Pro Tip

Part Details

Installation Notes

• Disconnect power before removing or installing the part; shut off the gas supply as applicable to the dryer installation.
• The thermostat location and access procedure vary by dryer model; use the model-specific service or installation instructions.
• Record or photograph wire positions before disconnecting them, then reconnect each wire to its original terminal.
• Mount the replacement thermostat in the same location and orientation as the removed part, and reinstall any panels or guards removed for access.
• After reassembly, restore power and verify that the dryer cycles heat normally while monitoring for abnormal overheating or restricted airflow.

Verified Compatible Models

1106085299, 1106090199, 11060832990, 11060842990, 11060852990, 11060854990, 11060857990, 11060901990

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.