Bryant 580F installation instructions LED Error Code Service Analysis, Heating Service Analysis

Page 55

Table 41 — LED Error Code Service Analysis

SYMPTOM

CAUSE

REMEDY

Hardware Failure.

Loss of power to control module (IGC).

Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and

(LED OFF)

 

transformer. Units without a 24-v circuit breaker have an internal overload

 

 

in the 24-v transformer. If the overload trips, allow 10 minutes for automatic

 

 

reset.

Fan ON/OFF Delay Modified

High limit switch opens during heat exchanger

Ensure unit is fired on rate and temperature rise is correct.

(LED/FLASH)

warm-up period before fan-on delay expires.

 

 

Limit switch opens within three minutes after

Ensure unit’s external static pressure is within application guidelines.

 

blower-off delay timing in Heating mode.

 

Limit Switch Fault.

High temperature limit switch is open.

Check the operation of the indoor (evaporator) fan motor.

(LED 2 flashes)

 

Ensure that the supply-air temperature rise is in accordance with the range

 

 

on the unit nameplate.

Flame Sense Fault.

The IGC sensed flame that should not be

Reset unit. If problem persists, replace control board.

(LED 3 flashes)

present.

 

4 Consecutive Limit

Inadequate airflow to unit.

Check operation of indoor (evaporator) fan motor and that supply-air

Switch Faults.

 

temperature rise agrees with range on unit nameplate information.

(LED 4 flashes)

 

 

Ignition Lockout.

Unit unsuccessfully attempted ignition for

Check ignitor and flame sensor electrode spacing, gaps, etc.

(LED 5 flashes)

15 minutes.

Ensure that flame sense and ignition wires are properly terminated. Verify

 

 

that unit is obtaining proper amount of gas.

Induced-Draft Motor Fault.

IGC does not sense that induced-draft

Check for proper voltage. If motor is operating, check the speed sensor

(LED 6 flashes)

motor is operating.

plug/IGC Terminal J2 connection. Proper connection: PIN 1 — White, PIN

 

 

2 — Red, PIN 3 — Black.

Rollout Switch Fault.

Rollout switch has opened.

Rollout switch will automatically reset, but IGC will continue to lockout unit.

(LED 7 flashes)

 

Check gas valve operation. Ensure that induced-draft blower wheel is prop-

 

 

erly secured to motor shaft.

 

 

Reset unit at unit disconnect.

Internal Control Fault.

Microprocessor has sensed an error in the

If error code is not cleared by resetting unit power, replace the IGC.

(LED 8 flashes)

software or hardware.

 

Internal Software Fault.

Internal Software Processor fault.

Fault code will automatically reset after one hour. Can be immediately

(LED 9 flashes)

 

reset by resetting unit power supply.

CAUTION: If the IGC must be replaced, be sure to ground yourself to dissipate any electrical charge that may be present before handling new control board. The IGC is sensitive to static electricity and may be damaged if the necessary precautions are not taken.

IMPORTANT: Refer to Table 42 — Heating Service Analysis for additional troubleshooting analysis.

LEGEND

IGC — Integrated Gas Unit Controller

LED — Light-Emitting Diode

Table 42 — Heating Service Analysis

PROBLEM

CAUSE

REMEDY

Burners Will Not Ignite.

Misaligned spark electrodes.

Check flame ignition and sensor electrode positioning. Adjust as needed.

 

No gas at main burners.

Check gas line for air, purge as necessary. After purging gas line of air, allow

 

 

gas to dissipate for at least 5 minutes before attempting to relight unit.

 

 

Check gas valve.

 

Water in gas line.

Drain water and install drip leg to trap water.

 

No power to furnace.

Check power supply, fuses, wiring, and circuit breaker.

 

No 24 v power supply to control circuit.

Check transformer. Transformers with internal overcurrent protection require a

 

 

cool down period before resetting.

 

Miswired or loose connections.

Check all wiring and wire nut connections.

 

Burned-out heat anticipator in thermostat.

Replace thermostat.

 

Broken thermostat wires.

Run continuity check. Replace wires, if necessary.

Inadequate Heating.

Dirty air filter.

Clean or replace filter as necessary.

 

Gas input to unit too low.

Check gas pressure at manifold. Clock gas meter for input. If too low, increase

 

 

manifold pressure, or replace with correct orifices.

 

Unit undersized for application.

Replace with proper unit or add additional unit.

 

Restricted airflow.

Clean filter, replace filter, or remove any restrictions.

 

Blower speed too low.

Use high speed tap, increase fan speed, or install optional blower, as suitable

 

 

for individual units.

 

Limit switch cycles main burners.

Check rotation of blower, thermostat heat anticipator settings, and temperature

 

 

rise of unit. Adjust as needed.

 

Too much outdoor air.

Adjust minimum position.

 

 

Check economizer operation.

Poor Flame Characteristics.

Incomplete combustion (lack of combustion

Check all screws around flue outlets and burner compartment. Tighten as nec-

 

air) results in:

essary.

 

Aldehyde odors, CO, sooting flame, or floating

Cracked heat exchanger.

 

flame.

 

 

Overfired unit — reduce input, change orifices, or adjust gas line or manifold

 

 

 

 

pressure.

 

 

Check vent for restriction. Clean as necessary.

 

 

Check orifice to burner alignment.

Burners Will Not Turn Off.

Unit is locked into Heating mode for a one

Wait until mandatory one minute time period has elapsed or re-

 

minute minimum.

set power to unit.

55

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Contents Installation Important Read Before InstallingContents Safety ConsiderationsBase Unit Dimensions 580F036-072 Base Unit Dimensions 580F073 IV. RIG and Place Unit III. Install External Trap for CONDEN- Sate DrainAlternate Unit Support II. Field Fabricate DuctworkCRRFCURB002A01 Unit Size Accessory CRRFCURB001A01Connector ALT Accessory Drain GAS PKG. Accy Hole PowerVI. Install GAS Piping Install Flue HoodRigging Details Unit 580F MAX WeightPhysical Data RETURN-AIR Filters Furnace SectionFreeze Protection Thermostat F OUTDOOR-AIR Inlet ScreensVII. Make Electrical Connections Field Power SupplyField Control Wiring Heat Anticipator SettingsPower Wiring Connections RLA LRA FLA MCA MOCP† Electrical Data Without Convenience OutletElectrical Data With Convenience Outlet Manual Outdoor-Air Damper VIII. Adjust FACTORY-INSTALLED OptionsHood BOX Optional EconoMi$er+Bracket Iarh OarhIAQ OATDamper Movement EconoMi$er+ Controller WiringThermostats Return Air Temperature RAT Sensor EconoMi$er+ Field-Installed AccessoriesOutdoor Air Temperature OAT Sensor Provided Supply Air Temperature SAT Sensor ProvidedOutdoor Air Humidity Sensor Indoor Air Quality Voltage SettingRange Resolution Temperature ResistanceEnthalpy Changeover Settings Indoor Air Humidity Sensor Occupied/Unoccupied SwitchPower Exhaust Remote EconoMi$er+ Enable ControlVentilation for People CO2 Sensor ConfigurationFull Occupancy Ventilation RateDirect-Drive Motors IX. Adjust EVAPORATOR-FAN SpeedBelt-Drive Motors Motor Data Fan Rpm at Motor Pulley Settings958 External Static Pressure in. wg Cfm Rpm Bhp Watts 900768 8701073 External Static Pressure in. wg Cfm Rpm Bhp Watts955 1181 970802 370 Low Speed840 432 935 802 370 912 489624 773856 967 579663 757941 Airflow Low Speed High SpeedBhp Watts 900 884762 777 859 458 944 579705 886 517 969 644790 353 896 470 990 599 790 353828 413 866 479944 635 1036 775 1119 924 828 413 930 535 1021 669866 479 964 607 1053 746 905 553 1000 687 1085 831966 771867 986START-UP Unit Preparation IV Internal WiringVI. Refrigerant Service Ports PRE-START-UPMain Burners IX. CoolingXI. Heating XIII. Ventilation Continuous FAN XII. Safety ReliefXIV. ECONOMI$ER+ Controller Economizer Motor DS1 DS2 DS3 DS4Input Name Type USE INPUT/OUTPUT Conversion Connection PIN Thermostat InputsConfiguration Variables Read and Setup Modes Start-Up Mode SequenceInput/Output Channels Setup Mode Error Mode Manual ModeXV. ECONOMI$ER+ Configuration Ventilation Air and Free Cooling Compressor Configuration and ControlCooling, Units without EconoMi$er+ Demand Ventilation ConfigurationPower Exhaust Configuration XVI. Operating SequenceCooling, Units with EconoMi$er+ Heating, Units without EconoMi$er+Service Cleaning IV. Manual OUTDOOR-AIR Damper III. Blower Belt AdjustmentECONOMI$ER+ Adjustment II. LubricationXVI. Replacement Parts Limit SwitchXIII. HIGH-PRESSURE Switch XIV. Loss of Charge SwitchSuction Line Pressure Psig Suction Line Temperature DEG. CSuction Line Temperature DEG. F Suction Line Pressure KilopascalsTON Unit 60 Hz Charging Chart Burner Section Details Troubleshooting ECONOMI$ER+ Troubleshooting RAM Test Failure Error Code 8 E2 Test FailureUnit Always in Unoccupied Mode II. Unit TroubleshootingHeating Service Analysis LED Error Code Service AnalysisCooling Service Analysis HPS FPTGND GVRAppendix a ECONOMI$ER+ Label Startup ModeAppendix a ECONOMI$ER+ Label Appendix B JOB Specific ECONOMI$ER+ Configuration Settings Index Call for Free Catalog Service TrainingPage III. START-UP Electrical START-UP ChecklistTemperatures Preliminary Information
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580F specifications

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