Nordyne 920916 Control Board for M7Tl Furnace

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of the Nordyne 920916 Control Board. This board is designed as a replacement component for M7Tl series furnaces, managing critical functions such as ignition, fan control, and safety protocols. Please read this manual thoroughly before proceeding with any procedures.

2. Safety Information

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Installation and service must be performed by a qualified installer, service agency, or gas supplier.

• Always disconnect electrical power to the furnace before servicing or installing the control board to prevent electrical shock.
• Verify that all wiring connections are secure and correctly matched according to the furnace wiring diagram.
• Handle the control board by its edges to avoid damaging electronic components due to static discharge.
• Ensure proper grounding of the furnace system.

3. Package Contents

The package contains the following item:

• One (1) Nordyne 920916 Control Board

4. Specifications

5. Installation and Setup

This section outlines the general procedure for replacing a furnace control board. It is highly recommended that installation be performed by a qualified HVAC technician.

1. Disconnect Power: Locate the main electrical disconnect for the furnace and turn off all power. Verify power is off using a voltage tester.
2. Access Control Board: Open the furnace access panel to expose the existing control board.
3. Document Wiring: Before disconnecting any wires, take clear photographs of the existing wiring connections. This will serve as a reference during reinstallation. Alternatively, label each wire as it is removed.
4. Disconnect Wires: Carefully disconnect all wires and connectors from the old control board. It is often helpful to transfer wires one by one from the old board to the new board to minimize errors.
5. Remove Old Board: Unmount the old control board from its position. Note how it was secured (screws, clips, etc.).
6. Mount New Board: Install the Nordyne 920916 Control Board in the same location and secure it using the appropriate fasteners.
7. Reconnect Wiring: Refer to your photographs or labels and carefully reconnect all wires and connectors to the corresponding terminals on the new 920916 control board. Pay close attention to terminal labels such as V2, V1, G, W2, W1, C, R, and LINE-N. Ensure connections are firm.
8. Close Access Panel: Securely close the furnace access panel.
9. Restore Power: Turn on the main electrical power to the furnace.
10. Test Operation: Initiate a heating cycle to verify proper furnace operation. Observe the status indicator lights on the control board for diagnostic feedback.

6. Operation

The Nordyne 920916 Control Board is an integral component of your M7Tl furnace system. It functions automatically to manage the furnace's operational sequences, including:

• Ignition Control: Initiates the heating cycle by controlling the igniter and gas valve.
• Fan Control: Manages the operation of the furnace blower fan for heat distribution and cooling cycles.
• Safety Monitoring: Continuously monitors various safety sensors (e.g., flame sensor, limit switches) to ensure safe operation and will shut down the furnace if a fault is detected.
• Diagnostic Feedback: Provides diagnostic information through status indicator lights, aiding in troubleshooting.

For detailed information on the overall operation of your M7Tl furnace, please refer to the furnace's primary user manual.

7. Maintenance

The Nordyne 920916 Control Board itself requires minimal direct user maintenance. However, regular inspection of the furnace system is recommended to ensure its longevity and proper function:

• Visual Inspection: Periodically inspect the control board and its connections for any signs of damage, corrosion, or loose wiring. Ensure the area around the board is clean and free of dust or debris.
• Professional Servicing: It is advisable to have your furnace system, including the control board, inspected and serviced annually by a qualified HVAC technician. They can identify potential issues before they lead to system failure.

8. Troubleshooting

If your furnace is not operating correctly after installing the Nordyne 920916 Control Board, consider the following troubleshooting steps. Always disconnect power before inspecting internal components.

• No Power to Furnace:
  • Check the furnace circuit breaker at your electrical panel.
  • Ensure the furnace access panel is securely closed, as some furnaces have safety switches that prevent operation if the panel is open.
• Furnace Not Starting/No Heat:
  • Verify all wiring connections to the control board are secure and correctly matched according to the wiring diagram.
  • Check the thermostat settings to ensure it is calling for heat.
  • Inspect the status indicator lights on the control board (refer to Figure 1). These lights often flash in specific patterns to indicate fault codes. Consult your furnace's main manual or a Nordyne service guide for interpretation of these codes.
• Blower Fan Issues:
  • If the fan runs continuously or does not turn on, check the fan limit switch settings and thermostat fan control.
  • Review the control board's status lights for fan-related error codes.

If troubleshooting steps do not resolve the issue, it is recommended to contact a qualified HVAC technician for further diagnosis and repair.

9. Warranty and Support

For information regarding the warranty of your Nordyne 920916 Control Board, please refer to the documentation provided at the time of purchase or contact your authorized Nordyne dealer or the seller directly. Warranty terms and conditions may vary.

For technical support or service inquiries, please contact a qualified HVAC professional or refer to the official Nordyne support resources available through their website or authorized service centers.