Heatcraft Refrigeration 21340101 Defrost Timer 318973-401 Common Questions: Is the SP20164

Common Questions: Is the SP20164 compatible with LP (Propane) units

Check the existing suction and liquid line diameters

How do I test the resistance

making it suitable for high-humidity air handling applications

It is often preferred in applications where moisture resistance or permanent filtration is required

Heatcraft Refrigeration 21340101 Defrost Timer 318973-401 Common Questions: Is the SP20164The Heatcraft 21340101 Defrost Timer, also identified as the DTSX240, is a heavy duty mechanical control engineered for demanding commercial refrigeration and freezer applications. This 230V defrost timer features a robust 40A capacity, making it a standard OEM replacement part for Heatcraft, Bohn, and Larkin walk in units. Built for high amperage loads, it provides precise timing for electric defrost cycles, preventing evaporator ice accumulation