White-Rodgers 50A65-843 Furnace Ignition Control

White-Rodgers 50A65-843 Furnace Ignition Control is a universal ignition control designed for integrated HIS furnace control systems. This 25V AC input unit delivers reliable ignition with precision timing and durable silicon nitride construction, built to withstand demanding residential HVAC use. The compact control handles essential relays for resistive igniters, inducers, and circulators, making it a versatile choice for modern furnaces.

Key features and specs at a glance:

• Universal ignition control for integrated HIS furnace control systems
• Voltage rating: 25V AC input; current handling for resistive igniter, inducer, and circulator relays
• Precise timing delays: Heat On 30/45 s; Heat Off 60/90/120/180 s; Cool On 5 s; Cool Off 45/90 s
• Operating range: -40 to 175°F; humidity 5–93% non-condensing
• Material: Silicon nitride for reliability in demanding environments
• Includes: Air cleaner, humidifier, and fuse for ready-to-install setup

With its universal compatibility and robust protection features, the 50A65-843 provides dependable ignition control that supports efficient furnace performance and extended equipment life.