Fenwal 35-605957-015 Ignition Module 321702-401 When you are specking out

When you are specking out high-capacity domestic hot water systems

OEM wiring harnesses provide the exact pin configurations and wire gauges required by the manufacturer

and solid-state starters

often indicated by specific flash codes like the common 7-flash error

the MARS 71 Relay is non-positional

Fenwal 35-605957-015 Ignition Module 321702-401 When you are specking outThe Fenwal 35 605957 015 Ignition Module is a 24 VAC microprocessor based Direct Spark Ignition (DSI) control engineered for precision performance in demanding HVACR environments. This Fenwal ignition control provides comprehensive burner management by continuously analyzing system parameters to ensure safe, repeatable combustion cycles. Designed to handle both natural gas and propane applications, the module operates efficiently within a broad