Customer Questions and Answers for Thermostat Spst (Upper) by Whirlpool

This upper SPST thermostat is a single-pole temperature switch that helps control heating by opening the circuit at a set temperature. It restores proper temperature cycling and acts as an over-temperature safety device. What it does:

• Opens/closes the heating circuit at its set temperature to regulate heat output.
• Functions as an upper-limit/safety thermostat to help prevent overheating.
• Common symptoms of failure: no heat, intermittent heating, or continuous heating despite controls.
• Used where an upper-temperature cutoff is required to maintain safe operation.

• Disconnect power to the appliance before servicing to avoid shock or injury.
• Compare wiring and mounting orientation to the original part before removal.
• Confirm failure with a multimeter (continuity check) before replacing the thermostat.