Critical Safety Protection: Prevents heat exchanger damage and hazardous operating conditions by monitoring internal plenum temperatures

and mineral oils without breaking down or stripping essential additives from the lubricant

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excluding the T-4100 and T-4600 models

While some technicians attempt to clear debris with compressed air

Lennox 88K30 Tstat/Sensor Critical Safety Protection: Prevents heatThe Lennox 88K30 is a critical OEM defrost thermostat designed to regulate the defrost cycle in residential heat pump systems. Engineered to prevent evaporator coil icing, this sensor features a specific 70 42F temperature calibration. It is designed to close the circuit at 42F to initiate the defrost sequence and open at 70F once the coil is clear, ensuring the system returns to heating mode efficiently. This genuine 88K3001 replacement part is a