This part number refers to the plastic cover only

Installing a higher temperature limit can lead to unsafe system operation and potential heat exchanger failure

replacing this gasket is essential to maintaining system integrity and preventing steam bypass or external leaks

Common indicators include the furnace clicking repeatedly without a flame

This prevents hazardous operation during venting obstructions or inducer motor failure

Cleveland Controls RFS-4001-038 Pressure Switch This part number refers toThe Cleveland Controls RFS 4001 038 is a professional grade airflow pressure sensing switch designed for robust performance in HVAC and energy management systems. Engineered to detect positive, negative, or differential air pressure, this adjustable pressure switch features a set point range from 0. 15" w. c. to 5. 0" w. c. with a specialized progressive differential for precise calibration. This model is a direct replacement for RFS 4001 025 and