Resideo s8701a1098/b Dsi Ignition Control Module

Product Description

The RESIDEO s8701a1098/b is a direct spark ignition (DSI) control module designed to manage pilot ignition sequencing in gas heating systems. It features a 6-second lockout that halts ignition attempts after a failed trial for ignition, preventing unsafe repeated cycling and protecting downstream gas valve components. This module is a field-replaceable control used by licensed HVAC technicians servicing residential and light commercial gas-fired heating equipment. Its role is to sequence the igniter, monitor flame sense, and shut down the system safely when ignition cannot be confirmed within the trial period.

The s8701a1098/b is suited for gas heating applications where direct spark ignition is the specified ignition method. It fits into systems where the control board manages ignition timing and lockout logic without a standing pilot. Typical installation scenarios include replacement service on gas furnaces and unit heaters that use DSI controls as the primary ignition management component. No specific compatible model numbers were provided in the product data; consult the equipment service manual to confirm fitment before installation.

Key Features

• 6-second trial-for-ignition lockout prevents unsafe ignition cycling on failed starts
• Direct spark ignition (DSI) control — no standing pilot required
• Manages igniter sequencing and flame sense confirmation
• Designed as a field-replaceable module for gas heating system service
• Supports safe shutdown logic when ignition cannot be established

Compatibility

Designed as an OEM-style replacement DSI control module for gas-fired heating systems that specify direct spark ignition control with a 6-second lockout. Verify equipment compatibility against the original equipment service documentation before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with gas heating controls and applicable local codes. Shut off gas supply and disconnect all electrical power to the unit before removing the existing module. Handle wiring connections according to the equipment wiring diagram; do not rely on wire position alone when reconnecting control circuits. After installation, verify proper ignition sequence and flame sense operation before returning the system to service.

Technical Specifications

• Ignition Type: Direct Spark Ignition (DSI)
• Lockout Timing: 6 seconds

Standard Information

• Brand: RESIDEO
• Manufacturer Part Number: s8701a1098/b