Unlike ice cube relays that require separate bases

it prevents heat exchanger damage and hazardous conditions by interrupting the burner circuit if the plenum temperature exceeds specified tolerances

The synchronous drive mechanism ensures timing accuracy across a wide operating temperature range of -40°F to 185°F

Ensure the forward-curved blades match your existing housing configuration

Fenwal 35-605601-201 Control Refrigerant Unlike ice cube relays thatThe Fenwal 35 605601 201 is a high performance 24V Direct Spark Ignition (DSI) control module engineered for precise burner sequencing in gas fired heating systems. This microprocessor based unit utilizes standard 24 VAC input and features a fixed 30 second pre purge period followed by a 4 second trial for ignition (TFI) to ensure safe and efficient combustion. Designed for reliability in the field, it includes on board LED diagnostics for rapid