The Fenwal 35-673915-553 Ignition Module is a microprocessor-based hot surface ignition control suitable for commercial and industrial applications with combustion chambers over 400,000 BTU. This module also makes it safe and efficient in terms of proving ignition capability before opening the gas valve. It contains several ignition attempts, pre-purge time, and constant pressure switch and flame check to avoid a hazardous state. The diagnostic LED helps in solving problems and makes the maintenance process a bit more convenient. Advantages are the conformity with the ASME CSD-1 requirements, protection from moisture, and the temperature range of application is from -40 to +165 F.
The Teledyne Laars Fenwal 35-673915-553 is a Microprocessor-Based Operation, Combustion Blower Relay, and 24 VAC Proven Hot Surface Ignition Control. It's essentially a sophisticated gas appliance ignition system with numerous features for safe and efficient combustion. It's a key component in gas-fired heating systems like furnaces and boilers, responsible for safely and reliably igniting the main burner.
Key Features:
Proven Hot Surface Ignition (HSI): Ensures reliable ignition before the gas valve opens, minimizing gas leaks and improving safety.
Microprocessor-Based Timing: Provides precise control over ignition and purge sequences for optimal performance and system protection.
24 VAC Operation: Compatible with standard residential voltage power supplies.
Combustion Blower Relay: Controls the blower fan that provides air for proper combustion.
Multiple LED Indicators: Visual feedback for system status, including pre-purge, ignition, and flame status.
On-Board Diagnostics: Built-in troubleshooting features simplify problem identification and repair.
Adjustable Settings: Allows customization of pre-purge, inter-purge, and post-purge times for specific appliance requirements.
Multiple Ignition Attempts: Automatically attempts re-ignition in case of initial flame failure, preventing complete system shutdown.
Safety Features: keeps an eye on the main burner flame, the thermostat, and the pressure switch to guarantee dependable and safe operation.
Durable Construction: Designed for long-lasting performance in industrial and commercial applications.
Applications:
The Ignition Module 35-673915-553 is suitable for various gas-fired appliances requiring reliable and efficient ignition control, including:
Boilers
Furnaces
Water heaters
Industrial ovens
Food processing equipment
Commercial cooking equipment
Signs of a Faulty 35-673915-553 Ignition Module Fenwal:
The Fenwal 35-673915-553 is a robust ignition control system for gas-fired appliances. Even the most dependable machinery, meanwhile, is subject to malfunctions over time. Here are some potential signs that your Ignition Module 35-673915-553 might be faulty:
Ignition Problems:
Appliance not igniting at all: If your furnace, boiler, or other gas-fired appliance consistently fails to ignite, the ignition control could be the culprit.
Intermittent ignition: The appliance might sporadically light up, then shut off due to repeated ignition attempts.
Delayed ignition: It takes significantly longer than usual for the appliance to ignite.
Visible flame rollout: Flames spilling out beyond the designated burner area can indicate issues with proper gas flow or ignition timing controlled by the Fenwal unit.
Operational Issues:
Frequent system shutdowns: The appliance unexpectedly shuts down even after successful ignition.
Error codes or LED indicators: The control panel might display specific error codes or unusual LED patterns indicating internal malfunctions.
Unusual noises: Buzzing, clicking, or excessive vibration noises emanating from the control unit could signal internal issues.
Burning smell: A burning smell near the control unit is a serious warning sign of potential overheating or electrical malfunction and requires immediate attention.
Physical Damage:
Visible cracks or leaks in the housing: Damage to the unit's exterior can compromise internal components and affect its performance.
Loose or corroded connections: Loose or corroded wiring connections can disrupt proper signal transmission and system operation.
Signs of overheating: Discoloration, melting, or warping of the housing components can indicate internal overheating.
Remember:
Safety first: If you suspect any of these signs, do not attempt to fix the Fenwal unit yourself. Gas appliances and electrical components require qualified personnel for safe and proper repair.
Consult a professional: Contact a licensed technician or the appliance manufacturer for proper diagnosis and repair. They are able to pinpoint the issue's origin with accuracy and provide a suitable fix.
Here are some additional tips for maintaining your Ignition Module 35-673915-553:
Regularly clean and inspect the unit: Ensure the unit is free from dust, debris, and corrosion.
Check wiring connections: Visually check electrical connections on a regular basis for damage or looseness.
Follow manufacturer's instructions: Refer to the user manual or manufacturer's website for comprehensive maintenance guidelines and troubleshooting tips.
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