Liberty/Rainford/Samsung refrigerator Thermostat WDF20-L (3-pin, +3.5°C -20°C)

The WDF20 thermostat (often referred to as the WDF20-L) is a mechanical 3-pin or 2-pin thermostat widely used in refrigerators, freezers, and beverage coolers to regulate refrigeration temperatures, typically operating in the range of +3.5°C (warm) to -20°C (approximately 10V to 250V AC). It operates on 110–250V AC power with a 5 (4)A nominal current, features a capillary sensor, and is a direct replacement for models such as the WDF16, WDF18, and WDF25.

Main parameters:

• Temperature range : Generally around +3.5°C (warm) to -20°C (cold), suitable for refrigerator/freezer.
  
• Electrical Specifications : 110-250V AC, 5A or 6A (50/60Hz).
  
• Terminals : Often 3-pin, although 2-pin variants also exist.
• Sensor length : typically 54 to 70 cm, with some variations up to 90 cm.
  
• Application : Ideal for small and medium sized refrigerators, freezers and drink coolers, such as Samsung, Rainford, Liberty MRF-320.
  
• Control : Uses D-shape shaft for manual temperature adjustment.
  

Note: WDF-20 is often used as a replacement for WDF-18 or WDF-16.