IX. Limit Switch, Burner Ignition, Off | Bryant 581B instruction

INDUCED-	ROLLOUT
DRAFT	SWITCH
MOTOR
MOUNTING
PLATE

BURNER
SECTION	FLUE
	EXHAUST
INDUCED-
DRAFT	BLOWER
MOTOR	BLOWER
	HOUSING
MANIFOLD	GAS
PRESSURE	GAS
TAP	VALVE

Fig. 43 Ð Burner Section Details

IX. LIMIT SWITCH

Remove blower access panel (Fig. 2). Limit switch is located on the fan deck.

Fig. 41 Ð Cooling Charging Chart, 581B060

X. BURNER IGNITION

Fig. 42 Ð Cooling Charging Chart, 581B072

4.Slide the motor and blower wheel assembly out of the blower housing. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with steps 5 and 6.

5. To remove blower from the motor shaft, remove

2 setscrews.

6.To remove motor, remove 4 screws that hold the motor to mounting plate. Remove the motor cooling fan by removing one setscrew. Then remove nuts that hold motor to mounting plate.

Unit is equipped with a direct spark ignition 100% lockout system. Integrated Gas Unit Controller (IGC) is located in the control box (Fig. 15). The IGC contains a self-diagnostic LED (light-emitting diode). A single LED on the IGC pro- vides a visual display of operational or sequential problems when the power supply is uninterrupted. When a break in power occurs, the IGC will be reset (resulting in a loss of fault history). The indoor (evaporator) fan ON/OFF times will also be reset. The LED error code can be observed through the viewport. During servicing refer to the label on the control box cover or Table 17 for an explanation of LED error code descriptions.

If lockout occurs, unit may be reset by interrupting the power supply to unit for at least 5 seconds.

CAUTION: When servicing gas train, do not hit or plug ori®ce spuds.

Table 17 Ð LED Error Code Description*

LED INDICATION	ERROR CODE DESCRIPTION
ON	Normal Operation
OFF	Hardware Failure
1 Flash²	Evaporator Fan On/Off Delay Modi®ed
2 Flashes	Limit Switch Fault
3 Flashes	Flame Sense Fault
4 Flashes	4 Consecutive Limit Switch Faults
5 Flashes	Ignition Lockout Fault
6 Flashes	Induced-Draft Motor Fault
7 Flashes	Rollout Switch Fault
8 Flashes	Internal Control Fault

LEGEND

LED Ð Light-Emitting Diode

*A 3-second pause exists between LED error code ¯ashes. If more than one error code exists, all applicable codes will be displayed in numeri- cal sequence.

²Indicates a code that is not an error. The unit will continue to operate when this code is displayed.

IMPORTANT: Refer to Troubleshooting Tables 18-22 for additional information.

7. To reinstall, reverse the procedure outlined above.

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581B specifications

The Bryant 581B is an innovative and highly efficient gas furnace that stands out in the HVAC market for its remarkable performance, reliability, and advanced features. Designed to provide optimal heating comfort, the Bryant 581B is perfect for homeowners seeking both quality and energy efficiency.

One of the main features of the Bryant 581B is its impressive Annual Fuel Utilization Efficiency (AFUE) rating. With an AFUE rating of up to 80%, this gas furnace maximizes energy usage, ensuring that a significant portion of the fuel is converted into heat for your home. This efficiency not only translates into lower energy bills but also reduces the carbon footprint, making it an environmentally friendly choice.

The furnace is equipped with a multi-speed blower motor that enhances comfort by providing consistent airflow throughout the home. This technology adjusts to different heating demands, ensuring that every room reaches the desired temperature without the discomfort of hot or cold spots. The quiet operation of the blower motor also adds to the overall comfort, creating a peaceful home environment.

Another notable characteristic of the Bryant 581B is its durable construction. It features a robust heat exchanger built from high-quality materials, designed to withstand the rigors of daily use. The compact design of the furnace allows it to fit seamlessly into various spaces, making it an ideal choice for both new installations and replacement projects.

The Bryant 581B also comes with advanced safety features, including a self-diagnostic control board that monitors the system's performance. This feature allows for easy troubleshooting and maintenance, prolonging the life of the furnace. Additionally, the furnace is equipped with an induced draft blower that enhances venting efficiency and safety by ensuring that combustion gases are safely expelled from the home.

For homeowners looking for enhanced control, the Bryant 581B is compatible with a range of smart thermostats, providing the ability to monitor and adjust heating settings remotely. This integration with smart technology ensures that homeowners can maintain their desired comfort levels while maximizing efficiency.

In conclusion, the Bryant 581B gas furnace is a top-tier option that combines efficiency, durability, and modern technology. With its high AFUE rating, multi-speed blower, and advanced safety features, it promises to deliver unparalleled comfort and peace of mind for years to come. Whether for a new build or an upgrade, the Bryant 581B is an investment that pays off in both comfort and savings.

Bryant 581B IX. Limit Switch, Burner Ignition, LED Error Code Description, Off

Models: 581B