White Rodgers 50V64-743 is an integrated furnace control designed for furnaces with variable fan speed.
The 50V64-743 is a two-stage automatic gas interrupted ignition control that employs a microprocessor. It continually monitors, analyzes, and controls the proper operation of the gas burner and inducer. Additionally, it provides signals for the proper operation of variable fan speed timing.
- Functionality: Signals are interpreted during continual surveillance of the two-stage thermostat and flame sensing element. These signals initiate automatic ignition of the burner, sensing of the flame, and system shutoff during normal operation. The control also incorporates system fault analysis for quick gas flow shutoff, coupled with automatic ignition retry upon sensing a fault correction.
- Precautions:
- Application of this type of control may cause flame rollout on initial startup, which could lead to personal injury or property damage.
- Always replace it with the exact model number, including the dash number.
- If you're unsure about your wiring (millivolt, line, or low voltage), have it inspected by a qualified heating and air conditioning contractor or licensed electrician.
- Follow local and national electrical codes and ordinances during installation.
- Handle the control carefully to avoid malfunction due to rough handling or component distortion.
Remember to consult the installation instructions and follow the appliance manufacturer's recommendations for proper operation
50V54-820 is the direct replacement for 50V64-743
