Comfort Maker Furnace Control Circuit Board 1011927 Instruction Manual

1. Introduction

This manual provides essential information for the installation, operation, and maintenance of the Comfort Maker Furnace Control Circuit Board, Model 1011927. This circuit board serves as the central control unit for your furnace, managing various functions to ensure efficient and safe operation.

It is crucial to read and understand all instructions before attempting any installation or service. Improper installation or maintenance can lead to property damage, personal injury, or death.

2. Safety Information

WARNING: Electrical Shock Hazard

• Always disconnect electrical power to the furnace at the main service panel before performing any service or installation. Failure to do so can result in severe personal injury or death.
• Installation and servicing should only be performed by a qualified HVAC technician.
• Ensure all wiring connections are secure and comply with local and national electrical codes.
• Do not operate the furnace with damaged wiring or components.

CAUTION: Property Damage Hazard

• Handle the circuit board with care to avoid damage from static electricity. Use proper electrostatic discharge (ESD) precautions.
• Verify that the replacement board is the correct model for your furnace. Refer to your furnace's documentation.

3. Product Overview

The Comfort Maker Furnace Control Circuit Board 1011927 is an OEM upgraded replacement part designed to manage the operational sequences of your furnace. It controls components such as the blower motor, igniter, gas valve, and safety limits, ensuring proper heating cycles.

Figure 1: Comfort Maker Furnace Control Circuit Board 1011927. This image displays the full circuit board, highlighting various components including relays, fuses, terminal blocks for wiring connections, and dip switches for configuration. Key labels such as "NEUTRAL", "CIR", "BLWR", "HEAT", "COOL", "DELAY", and "SPEED" are visible, indicating connection points and adjustable settings.

Key components visible on the board include:

• Relays: Two prominent relays (labeled "22VDC FORM C") control various circuits, likely for blower motor and other functions.
• Fuses: An orange fuse is present, providing overcurrent protection.
• Terminal Blocks: Screw terminals are provided for secure wiring connections, labeled for functions like "C" (Common) and "G" (Fan).
• Connectors: Various multi-pin connectors are present for connecting to other furnace components.
• Dip Switches: A set of red dip switches labeled "DELAY" and "SPEED" allows for configuration of operational parameters.
• Labels: Clearly marked connection points for "NEUTRAL", "CIR" (Circulator), "BLWR" (Blower), "HEAT", "COOL", "HUM" (Humidifier), and "FAC" (Fan A/C).

4. Installation

IMPORTANT: Installation should only be performed by a qualified HVAC technician.

1. Power Disconnection: Turn off all electrical power to the furnace at the main service panel. Verify power is off using a voltage meter.
2. Access Old Board: Locate and access the existing furnace control board within the furnace cabinet.
3. Document Wiring: Carefully label all wires connected to the old board before disconnecting them. Taking photographs of the wiring configuration is highly recommended.
4. Remove Old Board: Disconnect all wires and mounting screws holding the old board in place. Remove the old board.
5. Install New Board: Mount the new Comfort Maker 1011927 circuit board in the same location using the original mounting hardware.
6. Connect Wiring: Reconnect all labeled wires to their corresponding terminals on the new board. Double-check all connections for accuracy and security. Refer to the wiring diagram provided with your furnace or the labels on the board (e.g., NEUTRAL, BLWR, HEAT, COOL, G, C).
7. Configure Dip Switches: If applicable, configure the "DELAY" and "SPEED" dip switches on the new board to match the settings of the old board or the specifications required by your furnace model. Consult your furnace's manual for correct settings.
8. Restore Power: Once all connections are secure and verified, restore electrical power to the furnace at the main service panel.
9. Test Operation: Initiate a heating and cooling cycle to ensure the furnace operates correctly and safely.

5. Operation

The Comfort Maker Furnace Control Circuit Board 1011927 operates automatically once correctly installed and configured. It receives signals from the thermostat and other safety devices to initiate and control the furnace's heating and cooling cycles.

• When the thermostat calls for heat, the board will sequence the igniter, gas valve, and then the blower motor.
• When the thermostat calls for cooling (if applicable), the board will activate the blower motor.
• The board continuously monitors safety limits and will shut down the furnace if an unsafe condition is detected.

Refer to your furnace's main instruction manual for specific operational details of your heating system.

6. Maintenance

The furnace control circuit board itself requires no routine maintenance. However, regular maintenance of the overall furnace system is essential for its longevity and efficient operation. This includes:

• Regularly replacing or cleaning the air filter.
• Ensuring all vents and returns are unobstructed.
• Scheduling annual professional inspections and tune-ups by a qualified HVAC technician.

During professional maintenance, the technician will inspect the control board for any signs of wear or damage.

7. Troubleshooting

WARNING: Troubleshooting furnace issues can involve high voltage and gas. Always consult a qualified HVAC technician for diagnosis and repair.

If your furnace is not operating correctly after installing the new control board, consider the following general troubleshooting steps:

• No Power: Check the circuit breaker for the furnace. Ensure the furnace disconnect switch is in the "ON" position.
• Furnace Not Starting:
  • Verify the thermostat is set to "HEAT" and the temperature is above the ambient room temperature.
  • Check if the furnace filter is clean. A very dirty filter can restrict airflow and trigger safety limits.
  • Inspect the fuse on the control board (if accessible and safe to do so after disconnecting power).
  • Ensure all wiring connections to the board are secure and correct.
• Blower Not Running:
  • Check thermostat settings for fan operation (e.g., "AUTO" vs. "ON").
  • Verify wiring to the blower motor terminals on the control board.
• Error Codes: Many control boards have diagnostic LED lights that flash specific codes to indicate issues. Consult your furnace's manual for the meaning of any flashing lights.

If these steps do not resolve the issue, contact a qualified HVAC technician for further assistance.

8. Specifications

9. Warranty and Support

For warranty information and technical support regarding your Comfort Maker Furnace Control Circuit Board 1011927, please refer to the documentation provided by the original seller or contact the Comfort Maker customer service directly. Keep your proof of purchase for warranty claims.

It is recommended to register your product, if applicable, to ensure you receive any important updates or service notifications.