White Rodgers 50M56U-843 Furnace Control
Best universal control board for homeowners upgrading single-stage furnace systems.
This universal control board is the ultimate problem-solver for aging furnaces, replacing complex OEM parts with a single, adaptable solution. While it requires a bit of technical know-how to install, the diagnostic LEDs and flexible motor support make it the most reliable way to breathe new life into your HVAC system.
$111.00
at
RefCo Supply USA
Who it's for
- HVAC technicians needing to reduce inventory of specific OEM parts
- Service professionals seeking faster system troubleshooting and diagnostics
- Qualified installers looking for a straightforward, well-documented setup process
Who should skip it
- DIY homeowners uncomfortable with precise dip switch and jumper settings
- Budget-conscious buyers preferring cheaper, model-specific OEM board replacements
- Technicians working on systems with highly specialized or proprietary boards
Performance breakdown
Installation Versatility
Universal design simplifies replacement across a wide range of furnace brands.
Diagnostic Clarity
Built-in LED indicators make identifying system faults quick and stress-free.
Motor Compatibility
Flexible support for PSC, Variable Speed, and ECMx motors ensures broad utility.
Maintenance Accessibility
Automotive-style fuse allows for rapid, tool-free replacement during system power issues.
System Integration
Dedicated 120V accessory outputs streamline the addition of humidifiers and cleaners.
Operational Reliability
Factory-standard safety timings provide consistent, dependable performance for single-stage systems.
Key Specs
Stages
Single Stage
Ignition Type
Hot Surface Igniter
Ignitor Voltage
120 Vac
Blower Motor Speed Taps
Heat, Cool, Fan
Thermostat Inputs
R, C, W, Y G
Mounting Options
Standoff
Inducer Motor/Blower Motor
PSC/PSC
Power Source
Electric
Voltage
120 Volts
Accessory Type
Control Board
Know before you buy
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