Stove Parts 4 Less Harman Differential Pressure Sensor Vacuum Switch: 3-20-6866-SPFL

A pressure switch is often referred to as a vacuum switch. This sensor is looking for airflow within the stove to close the circuit to the feed system and the igniter. If your stove is feeding pellets, your pressure switch is ok. For the switch to work properly, the hopper and the front door must be making a tight seal. Almost all of the time, the switch is good but there is an air leak or point of failure somewhere else within the stove. For example, a clogged vent or burnt-out combustion blower motor. This switch is calibrated to close the ignition and feed circuit at .10 WC PF. See our Helpful hints and instructions for troubleshooting information. - Compatible with the Harman Absolute 43, Harman Absolute 43-C, Harman Absolute 63, Harman Accentra 52i, Harman Accentra 52i TC, Harman Accentra Cast FS, Harman Accentra Insert, Harman Advance, Harman HF60, Harman P35i, Harman P35i-C, Harman P38, Harman P38+, Harman P43, Harman P43-C, Harman P61-A, Harman P61-C, Harman P61A, Harman P68, Harman P68-C, Harman PB105, Harman PC45, Harman PF100, Harman PF120, Harman XXV, Harman XXV TC Normal Position:Open,Closed Position:.10 WC

• Compatible Replacement for Part # 3-20-6866 and 3-20-9301, 3-20-3433, SRV8320-003
• Compatible with the Harman Absolute 43, Harman Absolute 43-C, Harman Absolute 63, Harman Accentra 52i, Harman Accentra 52i TC, Harman Accentra Cast FS, Harman Accentra Insert, Harman Advance
• Compatible with the Harman HF60, Harman P35i, Harman P35i-C, Harman P38, Harman P38+, Harman P43, Harman P43-C, Harman P61-A, Harman P61-C, Harman P61A, Harman P68, Harman P68-C, Harman PB105
• Compatible with the Harman PC45, Harman PF100, Harman PF120, Harman XXV, Harman XXV TC
• Made In The USA