Description
The Fenwal 35‑655706‑021 Hot Surface Ignition Control Module is a high‑quality OEM ignition control board engineered for reliable performance in gas‑fired heating systems such as furnaces, boilers, water heaters, and other HVAC combustion appliances. This 24 VAC hot surface ignition (HSI) control module precisely manages ignition sequencing, flame sensing, and safety monitoring to support dependable burner start‑ups and efficient operation.
Key Features
- OEM‑grade hot surface ignition control module designed for gas‑fired HVAC applications.
- Operates on 24 VAC with accurate ignition sequencing and flame detection.
- Four‑second Trial‑For‑Ignition (TFI) cycle with three ignition tries for dependable starts.
- No pre‑purge timing simplifies ignition logic for compatible systems.
- Microprocessor‑based control with on‑board diagnostics to support efficient service and troubleshooting.
- Ideal replacement part for worn or failed ignition control modules in furnaces, boilers, and other gas burner systems.
