The internal seals and O-rings are optimized for compatibility with modern refrigerants

This OEM replacement part monitors refrigerant coil temperature and compressor run time to initiate defrost sequences

this unit is sold as Valve Less Coil (VLC)

resulting in localized overheating or airflow fluctuations that trigger "No Flame" errors

Early detection is essential to prevent acid formation in compressor oil

Robertshaw 4200-007 Gas Thermostat Refrigerant The internal seals and O-ringsThe Robertshaw 4200 007 Gas Thermostat is a heavy duty, high capacity commercial control engineered for precision in demanding kitchen environments. Designed as an FDO Gas Thermostat with a Body Type #1 configuration, this unit supports a wide temperature range of 150F to 550F, making it a versatile choice for deck ovens, baking ovens, and ranges. It features a robust 1 2" NPT side inlet and outlet for high flow gas appliance systems and is equipped