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

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INDUCED-

ROLLOUT

DRAFT

SWITCH

MOTOR

 

MOUNTING

 

PLATE

 

BURNER

 

SECTION

FLUE

 

EXHAUST

INDUCED-

 

DRAFT

BLOWER

MOTOR

 

HOUSING

MANIFOLD

GAS

PRESSURE

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.

Ð31Ð

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Contents Contents Important Ð Read Before InstallingSafety Considerations Threaded Wire Required Sizes Conduit USE Maximum Standard Varislide Corner Unit Economizer WeightConnection Sizes Roof Curb Mount InstallationLocate the Unit ClearanceUnit Size AccessoryService Plate Sizes Connector Unit Roof Curb581B 036 Unit MAX Dimensions WeightII. Unit Duct Connections III. RIG and Place UnitBase Unit 581B SpecicationsGas Piping Fig Install Flue HoodIV. Field Connections External Trap Condensate DrainNominal Internal Length of PIPE, FT Iron Pipe Diameter Size Electrical Connections Field Duct ConnectionsIFC CompEquip GNDHacr Power Supply Disconnect Voltage Range FAN MotorNominal Voltage Combustion Minimum Unit Compressor RLA LRA FLA MCA MOCP²Thermostat List Ð Electrical Data Units with Electrical Convenience OutletOptional Varislide Economizer Typical Access Panel Locations Accessory InstallationExample Optional Parablade EconomizerOutdoor-Air Thermostat/Enthalpy Control Installation Parablade Economizer Installed in Unit START-UP Compressor Rotation PRE-START-UPII. Heating Section START-UP and Adjustments Orifices Rated Gas Inputs at Indicated Manifold PressuresAltitude Compensation* Ð Units 581B036-072 PressureRollout Switch Air¯ow and Temperature RiseSafety Check of Limit Control Limit SwitchesUnit Controls III. Cooling Section START-UP and AdjustmentsChecking and Adjusting Refrigerant Charge Checking Cooling Control OperationBelt Drive Motors IV. Indoor Airflow and Airflow AdjustmentsVentilation Sequence Fan Rpm at Motor Pulley SettingsEvaporator Fan Motor Data 581B048 Air Delivery Ð Vertical Discharge Units 581B036 Air Delivery Ð Vertical Discharge Units581B072 Air Delivery Ð Vertical Discharge Units 581B060 Air Delivery Ð Vertical Discharge Units581B048 Air Delivery Ð Horizontal Discharge Units 581B036 Air Delivery Ð Horizontal Discharge Units581B072 Air Delivery Ð Horizontal Discharge Units 581B060 Air Delivery Ð Horizontal Discharge UnitsCare and Maintenanmce Service CleaningAIR Filter II. Lubrication IV. Economizer AdjustmentRefrigerant Charge VII. Flue GAS Passageways VI. Main BurnersVIII. COMBUSTION-AIR Blower Burner Ignition IX. Limit SwitchLED Error Code Description LED Indication Error Code DescriptionCleaning and Adjustment Removal and Replacement of Gas Train SeeXI. Replacement Parts Problem Cause Remedy TroubleshootingLED Error Code Service Analysis Heating Service AnalysisCooling Service Analysis OAT Varislide Economizer TroubleshootingSAT Or close according to Parablade Economizer TroubleshootingDamper does not open Damper does not closeTypical Wiring Schematic and Component Arrangement Component Arrangement Page III. START-UP Electrical START-UP ChecklistTemperatures Preliminary Information
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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.
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