Description: The Fenwal 35-655908-003 HSI Control Module is an electronic ignition controller designed for gas-fired HVAC heating equipment using hot surface ignitors. It manages the ignition sequence by powering the ignitor, opening the gas valve, and verifying flame presence for safe burner operation. Commonly used in gas furnaces, boilers, and commercial heating systems, this module ensures reliable ignition control. Its advanced design improves safety, reduces ignition failures, enhances combustion efficiency, and supports consistent, dependable heating system performance.
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