Customer Questions and Answers for Thermostat (Mechanical) by Whirlpool

This mechanical thermostat monitors temperature and opens or closes the circuit at a fixed set point to control heat and prevent overheating. Replacing a failed thermostat restores safe operation and consistent performance. What it does:

• Senses surface or component temperature and switches the circuit at a calibrated threshold
• Helps protect heaters, motors, and controls from thermal damage due to over-temperature
• Common symptoms of failure: no heat, shuts off mid-cycle, won't start until cooled, or intermittent operation
• Restores proper temperature control after a thermostat sticks open/closed or drifts out of spec

• 1 thermostat

• Disconnect power at the breaker (and shut off gas, if applicable) before servicing
• Note wire positions and transfer leads one-for-one to the new thermostat
• Mount flush against the sensing surface with original screws/clips; reinstall any insulation or thermal interface material as found
• Correct the root cause (blocked vents, failed fan, restricted airflow, or buildup) before returning the appliance to service