False. A cooled off Klixon thermal overload that is in the open position is not necessarily defective. The open position indicates that the thermal overload has tripped and disconnected the circuit due to excessive temperature. When it cools down, the thermal overload should reset itself and close the circuit again. However, if the thermal overload continues to trip even when operating within normal temperature ranges or fails to reset after cooling down, then it can be considered defective. In such cases, it is recommended to replace the Klixon thermal overload to ensure proper protection of the circuit.
