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critical for modern high-pressure refrigerants
Common indicators include the burner extinguishing immediately after the trial for ignition or the sensor failing to "prove" the flame despite a visible burner light-off
Noise Suppression: Advanced construction offers excellent protection against electromagnetic and radio frequency interference
Optimized 3-Way Operation: Ideal for controlling the flow of compressed air
Technicians should measure the DC microamp signal in series with the flame sensor
Fenwal 35-655921-001 Ignition Module 320788-703 critical for modern high-pressure refrigerantsThe Fenwal 35 655921 001 is a microprocessor based 24 VAC Hot Surface Ignition (HSI) Control engineered for precise management of gas fired appliances. This direct replacement ignition module handles the complete demand sequence, including combustion blower control, flame sensing, and diagnostic monitoring. Designed for systems under 400K BTU, it features a 5 second Trial for Ignition (TFI) and a 5 second ignitor heat up period to ensure stable
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