Fenwal 35-655205-013 Control

The Fenwal 35-655205-013 is a microprocessor-based 24V Hot Surface Ignition (HSI) Control engineered for high-reliability gas-fired equipment. This HVAC ignition module operates with a 7-second Trial for Ignition (TFI) and a 3-try ignition sequence, ensuring robust burner starts even in demanding environments. Designed with a 15-second inter-purge and no pre-purge (0 sec), it provides immediate response upon a call for heat while maintaining a 15ip safety buffer between attempts. Its microprocessor logic delivers precise timing and on-board LED diagnostics, allowing technicians to verify system status or troubleshoot flame sensing and lockout conditions rapidly. This Fenwal 35-65 replacement is non-position sensitive, facilitating versatile mounting in furnaces, boilers, and radiant heaters. With Detect-A-Flame technology and flame current test pins, this control ensures stable combustion monitoring and fail-safe operation for natural, manufactured, and LP gas applications.

• Advanced Microprocessor Logic: Provides repeatable timing for ignition sequencing and safety checks, improving overall system efficiency.
• Diagnostic LED Support: Simplifies service calls by providing clear fault codes for rapid troubleshooting of ignition lockout or airflow switch issues.
• Multi-Try Reliability: Executes a 3-try ignition sequence before entering a manual reset lockout, reducing nuisance service trips.
• Flexible Mounting: This module is not position-sensitive and can be installed horizontally or vertically using standard hardware.
• Universal Gas Compatibility: Rated for use with natural gas, propane (LP), and manufactured gas in appliances under 400K BTU.

• What do the LED flash codes signify? The on-board LED indicates system status; a steady flash typically confirms a call for heat, while specific pulse patterns identify flame failure, pressure switch faults, or internal control failure.
• How is a lockout reset on this 35-655205-013 model? Since this unit does not feature an automatic reset, a manual reset is required by cycling the thermostat or removing the 24 VAC power for at least 5 seconds.
• What is the minimum flame current required for operation? For reliable flame sensing, the control requires a minimum of 0.7 microamps DC, though 1.0 microamp or higher is recommended to prevent nuisance lockouts.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.