Carrier Complete Guide to IGC Control Board LED Alarms and Error Codes

Page 114

The alarm codes for the IGC control board are shown in Table 44.

Table 44 — IGC Control Board LED Alarms

INDICATION

ERROR MODE

ON

Normal Operation

OFF

Hardware Failure

1 FLASH

Fan ON/OFF Delay Modified

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

9 FLASHES

Software Lockout

Diagnostic LEDs — There are 3 LEDs (red, yellow, and green) on the lower right hand side of the control board. The red light is used to check unit operation and alarms. A constant pulse is normal unit operation. A series of quick blinks indi- cates an alarm. Refer to Table 45 below for a description of alarms. The yellow LED blinks during transmission with the CCN (Carrier Comfort Network). The green LED blinks dur- ing transmission with the expansion board.

Table 45 — Control Board LED Alarms

LED

ERROR

DESCRIPTION

RESET

ACTION TAKEN

TROUBLESHOOTING COMMENTS

BLINKS

CODE

METHOD

BY CONTROL

 

 

1

Normal Operation

None

The expansion board and control board flash the red LED

 

 

 

 

 

in one-second intervals when the board is operating properly.

2

HF-13

Compressor 1 Safety

Automatic

Cooling disabled.

The high or low pressure safety switch for compressor no. 1

 

 

 

and

Automatic reset after

has opened for 3 seconds. The error will be cleared and

 

 

 

Manual

15 minutes. Manual if

compressor no. 1 will be allowed to turn on in 15 minutes.

 

 

 

 

repeated 3 times in

If the safeties have been tripped 3 times in 90 minutes,

 

 

 

 

90 minutes.

compressor no. 1 will be locked out until the control

 

 

 

 

 

board has been manually reset.

3

HF-14

Compressor 2 Safety

Automatic

Cooling disabled.

The high or low pressure safety switch for compressor no. 2

 

 

 

and

Automatic reset after

has opened for 3 seconds. The error will be cleared and

 

 

 

Manual

15 minutes. Manual if

compressor no. 2 will be allowed to turn on in 15 minutes.

 

 

 

 

repeated 3 times in

If the safeties have been tripped 3 times in 90 minutes,

 

 

 

 

90 minutes.

compressor no. 2 will be locked out until the control

 

 

 

 

 

board has been manually reset.

4

HF-15

Thermostat Failure

Automatic

Alarm generated.

The thermostat is calling for both heating and cooling

 

 

 

 

 

at the same time. The unit will operate on a first call basis

 

 

 

 

 

and will automatically reset.

5

HF-05

SAT Thermistor Failure

Automatic

Heating, cooling, and

The supply-air temperature (SAT) sensor has failed.

 

 

 

 

economizer disabled.

First check for wiring errors, then replace sensor.

6

HF-06

OAT Thermistor Failure

Automatic

NTFC, IAQ purge,

The outside air temperature (OAT) sensor has failed.

 

 

 

 

economizer, and low

First check for wiring errors, then replace sensor.

 

 

 

 

ambient DX cooling

 

 

 

 

 

locked out disabled.

 

7

HF-03

Space Temp. Sen. Failure

Automatic

Disables unoccupied

The space temperature sensor has failed.

 

 

 

 

cooling/heating, CV

First check for wiring errors, then replace sensor.

 

 

 

 

economizer, and CV

 

 

 

 

 

cooling/heating.

 

8

HF-12

RAT Thermistor Failure

Automatic

VAV heating

The return-air temperature (RAT) sensor has failed.

 

 

 

 

disabled.

Ensure that the unit is a VAV unit. If NOT a VAV unit set

 

 

 

 

 

DIP switch position 1 to the closed position and reset power.

 

 

 

 

 

Then check for wiring errors. Finally, replace sensor.

9

SE-05

Loss of Communications

Automatic

Algorithms in

Communications between the expansion board and the

 

 

with Expansion Board

 

expansion board are

control board have been interrupted. Ensure that an

 

 

 

 

bypassed.

expansion board is installed and wired using the

 

 

 

 

 

wire harness supplied with the expansion module. If an

 

 

 

 

 

expansion board is not used ensure that DIP switch position

 

 

 

 

 

3 is in the closed position, and reset power.

10

HF-16

Control Board Failure

None

Control uses default

Generated when hardware has failed on control board.

 

 

 

 

values. (May seem

Replace the control board.

 

 

 

 

as normal operation)

 

 

 

Analog to Digital

None

All outputs turned off.

 

 

 

Conversion

 

 

 

11

HF-17

Expansion Board Failure

None

All outputs turned off.

Generated when hardware has failed on the

 

 

 

 

 

expansion board. Replace the expansion board.

12

SE-23

Cooling SAT Low

Automatic

Alarm generated.

CV operation. When SAT low limits are below range and

 

 

Limit Shutdown

 

 

compressor shut off.

LEGEND

DIP — Dual In-Line Package

VAV — Variable Air Volume

114

Image 114
Contents Installation, Start-Up Service Instructions Make Unit Duct Connections Instructions onRoof Curb 48AJ,AK020-030 and 48EJ,EK024-034 Units Roof Curb 48AJ,AK034-050 and 48EJ,EK038-048 Units Roof Curb 48AJ,AK060 and 48EJ,EK054-068 Units Page Base Unit Dimensions 48AJ,AK020-030 Base Unit Dimensions 48AJ,AK035-050 Base Unit Dimensions 48AJ,AK060 Base Unit Dimensions 48AW,AY020-030 Base Unit Dimensions 48AW,AY035-050 Base Unit Dimensions 48W,AY060 Base Unit Dimensions 48EJ,EK024-034 Base Unit Dimensions 48EJ,EK038-048 Base Unit Dimensions 48EJ,EK054-068 Base Unit Dimensions 48EW,EY024-034 Base Unit Dimensions 48EW,EY038-048 Base Unit Dimensions 48EW,EY054-068 AT Each Corner % 48EJ,EW,EK,EYD028 Rigging Weights 48AJ,AK,AW,AY UnitsAT Each Corner % 48EJ,EW,EK,EYD024 48EJ,EW,EK,EYD030Physical Data 48AJ,AK,AW,AY Units Unit 48AJ,AK,AW,AYQuantity Rows...Fins/in Physical Data 48EJ,EK,EW,EY Units Unit 48EJ,EK,EW,EY06D537 06EA250 06EA265 Quantity...Type Ckt 1, Ckt Operating Weights Evaporator Fan Motor Data Air Distribution Thru-the-BottomInstall Flue Hood Combustion Fan Housing Location48A,E Series Staged Gas Implementation Number of Stages Model Number Position Heat Size HtstgtypStages Thermistor Designations Supply-Air Thermistor Connections Indoor Air Quality Sensor Configuration Make Electrical Connections SIO CCNCOM DIPMin Max Unbalanced 3-Phase Supply VoltageElectrical Data 48AJ,AK,AW,AY Units RLA LRAQty 30.8/28.0 180.5/177.7 225/225 236.3/230.9 FLA LRA Electrical Data 48EJ,EK,EW,EY UnitsRange Exhaust FAN Motor MCA Mocp EW,EYFLA LRA MCA Mocp EW,EY 54.0 23.6 41.6 FLA NECRLA Field Power Wiring Connections GND GroundGND CCBEquip IFCOFC Carrier Comfort Network Indoor-Fan Circuit CCN IFC PescIndoor-Fan Relay Terminal Block CCN Connection Approved Shielded Cables Color Code RecommendationsMake Outdoor-Air Inlet Adjustments Space Temperature Averaging WiringAdding Seal Strip to Top of Hood Sides Adding Seal Strip to Sides of Hood Top Mounting Flange Mounting Angle With Tabs Attached to Filter Track Assembly Differential Enthalpy Control and Sensor Psychrometric Chart for Enthalpy Control Control Control Point Curve APPROX. DEGBarometric Relief Damper and Power Exhaust Mounting Details Unit Size 80.5 79.5 48EJ,EK,EW,EY024-054120.5 119.5 48EJ,EK,EW,EY058-068 Motormaster III Sensor Location 48EJ,EK,EW,EY054-064 Field Modifications Side Return Air ConversionSTART-UP Pressure Control Signal VFD SET Point In. wgCarrier Default Program Parameter Values Parameter Group Default ValueMotor Standard Efficiency High Efficiency Typical Factory Wiring Optional Field Wiring Building Pressure Signal Level Open DIP Switch ConfigurationSetting ClosedDIP Switch Factory Settings Fan Performance, 48AJ,AK020-030 Vertical Discharge UnitsAirflow 17,000 Fan Performance, 48AJ,AK035 Vertical Discharge Units16,000 18,00020,000 Fan Performance, 48AJ,AK040,050 Vertical Discharge Units19,000 17,000 18,000 19,000 20,000Fan Performance, 48AJ,AK060 Vertical Discharge Units Fan Performance, 48AW,AY020-030 Horizontal Discharge Units 11,000 12,000 13,000 14,000 15,000Fan Performance, 48AW,AY035 Horizontal Discharge Units 17,000 18,00013,000 14,000 15,000 16,000 17,000 18,000 Fan Performance, 48AW,AY040,050 Horizontal Discharge Units 19,000 20,00016,000 17,000 18,000 19,000 20,000 Fan Performance, 48AW,AY060 Horizontal Discharge Units 26,000 27,000Fan Performance, 48EJ,EK024,034 Vertical Discharge Units Rpm Bhp 000 1066 1096 1125 Fan Performance, 48EJ,EK038,044 Vertical Discharge Units19,000 20,000 Available External Static Pressure in. wg 15,000 16,000 17,000 18,000 19,000 20,000Fan Performance, 48EJ,EK048 Vertical Discharge Units Rpm Bhp000 1086 11.10 1114 11.61 1141 12.14 Fan Performance, 48EJ,EK054-068 Vertical Discharge Units 10,000 949 13.81 970 14.54 990 15.2610,000 956 12.99 976 13.66 996 14.32 Fan Performance, 48EW,EY054-068 Horizontal Discharge Units26,000 27,000 Available External Static Pressure in. wg 20,000 21,000 22,000 23,000 24,000 25,000 26,000 27,000Airflow LOW Speed Medium Speed High Speed ESPMotor Limitations Air Quality LimitsSequence of Operation User Defined Set Points Software Control Link PointsPage Heat Interlock Relay Wiring COM CommonFunction Location Staged Gas System ComponentsStage Gas System Inputs/Outputs Input DescriptionNavigator Display Navigator Display Menu StructureDEG. 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