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CRNQ-050E-PFV-970 is the direct replacement for 25J57
Always use a manometer to verify these pressures at the outlet tap during commissioning
For technicians performing annual tube cleaning or full system overhauls
While jumping the switch can confirm a diagnostic theory
This integrated furnace controller is optimized for precise flame rectification and thermal regulation
Fenwal 35-655605-013 Control 326058-758 CRNQ-050E-PFV-970 is the direct replacementThe Fenwal 35 655605 013 Control is a microprocessor based 24V Hot Surface Ignition (HSI) module engineered for precise sequence management in gas fired heating equipment. This OEM grade ignition board features a three trial ignition (3TRY) sequence and 7 second Trial for Ignition (TFI) period, ensuring reliable burner light off even in demanding environments. Designed with 0 seconds of pre purge (0sPP), it provides immediate ignitor heat up upon a