The unit operates with auto reset logic

including high-pressure and remote sensing configurations

dirt and silt are kept in suspension and purged during the discharge cycle

Rugged OEM Construction: Designed for high-heat applications

simplifying field installation and diagnostics

Fenwal 35-663904-113 Ignition Module Refrigerant The unit operates with autoThe Fenwal 35 663904 113 Ignition Module is a microprocessor based 24VAC Hot Surface Ignition (HSI) control designed for precise timing and consistent performance in commercial and residential gas fired appliances. This Fenwal 35 66 series module integrates a built in inducer blower relay and pressure switch monitoring, streamlining the combustion sequence by managing the blower and verifying airflow before the trial for ignition (TFI) begins. With a