Table 14 – IGC Board LED Alarm Codes

LED

 

ACTION TAKEN BY

 

 

FLASH

DESCRIPTION

RESET METHOD

PROBABLE CAUSE

CONTROL

CODE

 

 

 

 

 

 

 

 

 

 

 

 

On

Normal Operation

—

—

—

 

 

 

 

 

 

 

 

 

Loss of power to the IGC. Check 5 amp fuse

Off

Hardware Failure

No gas heating.

—

on IGC, power to unit, 24V circuit breaker,

 

 

 

 

transformer, and wiring to the IGC.

 

 

 

 

 

 

 

 

 

High temperature limit switch is open. Check

 

 

Gas valve and igniter Off.

Limit switch closed, or

the operation of the indoor (evaporator) fan

2 Flashes

Limit Switch Fault

motor.

Indoor fan and inducer

heat call (W) Off.

Ensure that the supply-air temperature rise is

 

 

On.

 

 

 

within the range on the unit nameplate. Check

 

 

 

 

 

 

 

 

wiring and limit switch operation.

 

 

 

 

 

 

 

Indoor fan and inducer

Flame sense normal.

The IGC sensed a flame when the gas valve

3 Flashes

Flame Sense Fault

Power reset for LED

should be closed. Check wiring, flame sensor,

On.

 

 

reset.

and gas valve operation.

 

 

 

 

 

 

 

 

 

Four Consecutive Limit

 

Heat call (W) Off.

4 consecutive limit switch faults within a single

4 Flashes

No gas heating.

Power reset for LED

 

Switch Fault

 

reset.

call for heat. See Limit Switch Fault.

 

 

 

 

 

 

 

 

 

 

 

 

 

Unit unsuccessfully attempted ignition for 15

 

 

 

Heat call (W) Off.

minutes. Check igniter and flame sensor elec-

 

 

 

trode spacing, gaps, etc. Check flame sense

5 Flashes

Ignition Fault

No gas heating.

Power reset for LED

and igniter wiring. Check gas valve operation

 

 

 

reset.

 

 

 

and gas supply. Check gas valve connections

 

 

 

 

 

 

 

 

to IGC terminals. BRN lead must be on Pin 11.

 

 

 

 

 

 

 

If heat off: no gas

Inducer sense normal,

Inducer sense On when heat call Off, or induc-

6 Flashes

Induced Draft Motor Fault

heating.

er sense Off when heat call On. Check wiring,

If heat on: gas valve Off

or heat call (W) Off.

voltage, and operation of IGC motor. Check

 

 

 

 

and inducer On.

 

speed sensor wiring to IGC.

 

 

 

 

 

 

 

Gas valve and igniter Off.

 

Rollout switch has opened. Check gas valve

7 Flashes

Rollout Switch Lockout

Indoor fan and inducer

Power reset.

operation. Check induced-draft blower wheel is

 

 

On.

 

properly secured to motor shaft.

 

 

 

 

 

 

 

 

 

IGC has sensed internal hardware or software

8 Flashes

Internal Control Lockout

No gas heating.

Power reset.

error. If fault is not cleared by resetting 24 v

 

 

 

 

power, replace the IGC.

 

 

 

 

 

9 Flashes

Temporary Software

No gas heating.

1 hour auto reset, or

Electrical interference is disrupting the IGC

Lockout

power reset.

software.

 

 

 

 

 

LEGEND

IGC --- Integrated Gas Unit Control

LED --- Light--- Emitting Diode

NOTES:

1.There is a 3--- second pause between alarm code displays.

2.If more than one alarm code exists, all applicable alarm codes will be displayed in numerical sequence.

3.Alarm codes on the IGC will be lost if power to the unit is interrupted.

580J

ECONOMIZER SYSTEMS

The 580J units may be equipped with a factory-installed or accessory (field-installed) economizer system. Two types are available: with a logic control system (EconoMi$er IV) and without a control system (EconoMi$er2). See Fig. 39 and Fig. 40 for component locations on each type. See Fig. 41 and Fig. 42 for economizer section wiring diagrams.

Both economizers use direct-drive damper actuators.

ECONOMI$ER IV

CONTROLLER

WIRING

OUTSIDE AIR

TEMPERATURE SENSOR

HARNESS

LOW AMBIENT

 

ACTUATOR

SENSOR

 

C06021

Fig. 39 - EconoMi$er IV Component Locations

33

Page 32 Page 34
Page 33
Image 33
Bryant 580J*04--12 appendix Economizer Systems, IGC Board LED Alarm Codes
Page 32 Page 34

580J*04--12 specifications

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