A.o. Smith 100049254 Ignition Module

Product Description

The A.O. SMITH 100049254 is a replacement ignition module designed to restore reliable ignition sequencing in compatible water heating systems. The ignition module controls the spark or hot-surface ignition cycle that initiates burner operation. When the original module fails, the burner will not light, leaving the system unable to heat water. This part is installed by licensed plumbers or water heater service technicians as a direct OEM-style replacement to return the unit to proper operation.

This ignition module is suited for residential and light commercial water heating applications where the original control has failed or is producing fault codes indicating ignition failure. It fits into the existing control cavity and connects to the existing wiring harness, making it a straightforward swap for a qualified technician familiar with A.O. SMITH water heater service procedures.

Key Features

• Direct replacement for failed or faulty ignition modules in compatible A.O. SMITH water heaters
• Restores proper ignition sequencing and burner startup operation
• OEM-style fit designed to match original mounting and wiring configuration
• Appropriate for residential and light commercial water heating systems

Compatibility

Designed as an OEM-style replacement ignition module for compatible A.O. SMITH water heating systems. Verify the part number against the unit's rating plate or service documentation before installation.

Installation Notes

Installation should be performed by a licensed plumber or qualified water heater service technician. Before servicing, shut off the gas supply and disconnect electrical power to the unit. Follow all applicable local codes and the manufacturer's service documentation when replacing ignition controls. Do not restore power or gas until all connections are confirmed secure and the access panel is reinstalled.

Technical Specifications

• Application: Replacement Part

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100049254