Read 709002-A G6 Control Board Replacement.indd text version

SELECT INSTRUCTION

**ATTENTION INSTALLERS**

These instructions describe how to properly replace a single stage *G6/L1 control board (PN 624631) with a *G7 control board (PN 624690). These instructions only apply to *G7 single stage furnaces. When connecting the wires from the blower motor, please note which wire connects to the HEAT and COOL terminals on the *G7 control board. NOTE: If the motor does not have an orange wire, do not place any wire on the Medium Low terminal, this should be left empty. The 6 pin (P1) and the 9 pin (P2) wire plugs will connect directly to the 624690 control board, there is no need to change any wire position. Place label with flash codes near the wiring diagram on the furnace door for future reference.

*G6/L1 Terminal (624631 Board) EAC Air Cleaner Neutral White Black Blower Motor Blue COOL/M1/M2/HEAT Orange Red Door Switch Humidifier Neutral XFMR Neutral 24V Transformer 24V COM 6 Pin Connector 9 Pin Connector P1 P2 White Black White Black with white stripe White with black stripe Multi Multi Neutral XFMR Neutral 24V COM P1 P2 L1 Neutral HUM Black White Black ML LOW L1 Neutral HUM Neutral HIGH MH Wire Color Black *G7 Terminal (624690 Board) EAC

WARNING:

To avoid electric shock, personal injury, or death, turn off the electric power at the disconnect or the main service panel before making any electrical connections.

CAUTION:

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

When replacing the *G6/L1 control board (PN 624631) with a *G7 control board (PN 624690), install all wires from the door switch and 24V transformer on the same pin locations they were removed from. This means the wire that was attached to the L1 terminal on the 624631 control board will need to be attached to the L1 terminal on the 624690 board, the wire on the XFMR terminal of the *G6/L1 board should be placed on the XFMR terminal of the *G7 board, etc. When connecting the wires from the thermostat, heat pump, AC unit, or air handler to the RCYGW terminals of the *G7 board, install all wires on the same terminals they were removed from.

Flame Signal Light (Yellow)

Status Light (Red)

XFMR EAC COOL HEAT M3 M2 M1 HUM

STATUS

TWIN

180 120 90 60

L1

180 120 90 60

LOW ML MH HIGH EAC L1 XFMR HUM

Blower Off Timing

3 Amp Fuse

HEAT COOL FAN COM 24V

COM

24 V

FLAME

BLOWER OFF DELAY

P1

6

5

4

3 Amp Fuse

3 6

2 1 5 4 7

P2

3 2

1

P2 3 2 5 8 1 4 7 3 P1 2 1 4 NEUTRALS

R C Y G W

6 9

R C Y G W

9 8

NEUTRALS

6 5

*G6/L1 Single Stage Control Board

*G7 Single Stage Control Board

WIRING DIAGRAM

For 80+ and 90+ Model Furnaces

BLUE BLUE BLUE BLUE FLAME ROLL-OUT SWITCH (SELECT MODELS ONLY) BLOWER DECK SWITCH (SELECT MODELS ONLY) SUPPLY AIR LIMIT SWITCH (ALL MODELS) FLAME ROLL-OUT SWITCH (ALL MODELS) VENT SAFETY SWITCH (SELECT MODELS ONLY) PRESSURE SWITCH VENT PRESSURE SWITCH (93+ MODELS ONLY)

BLUE

BLUE

ORANGE

ORANGE

INDUCER

SUPPLY AIR LIMIT

WHITE (NEUTRAL) BLACK 120V GROUND

C Y

SINGLE STAGE THERMOSTAT

FLAME SENSOR

BLACK

RED

ORANGE

BLUE

IGNITOR

NEUTRALS 7 8 9 4 5 6 4 5 6 1 2 3

3 AMP FUSE

Legend

R C

BLACK BLACK BLACK RED ORANGE BLUE INDUCER BLACK BLACK 1 2 3 4 5 WHITE 6 MOTOR PLUG

PRESSURE SWITCH (ON SELECT MODELS)

BLACK 24 V

HEAT L1 EAC HIGH MH ML LOW HIGH

BLK W/ WHITE STRIPES

WHITE W/ BLK STRIPES

WHITE

C

RED ORANGE

L ML MH H

4 SPEED MOTOR

BLUE BLACK

709002A (Replaces 7090020)

Specifications and illustrations subject to change without notice or incurring obligations. Printed in U.S.A. (02/09)

BLOWER LIMIT BLOWER LIMIT BLUE

*G7 Wiring Diagram

COOL FAN

HUM

XFMR

ORANGE

BLWR OFF DELAY

GREEN RED

MH

ML

PRESSURE SWITCH

YELLOW

120 V

WHITE

LOW

¢7089002/¤

C GREEN RED YELLOW YELLOW TO OUTDOOR UNIT

FLAME SENSOR RED YELLOW BROWN

Field Wiring Factory Wiring: Low Voltage High Voltage

BLACK

FAULT CONDITION Power On Limit Circuit Open or External Load On "W" Pressure Switch is Open with Inducer On Ignition Failure (Check Ground) False Flame or Gas Valve Relay Shorted Power Off

STATUS RED LIGHT ON 1 FLASH 2 FLASHES Pressure Switch is Closed with Inducer Off 3 FLASHES 4 FLASHES 115 VAC & Neutral Reversed or no Ground 5 FLASHES Continuous OFF

BLUE

These wires are not present on all models

If any of the original wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C.

BLUE

FAULT CONDITION Low Flame Sensor Signal Flame Present

FLAME YELLOW LIGHT Continuous Flash ON

Use copper conductors only.

7103550 (Replaces 7103250)

¢710355!¤

*G6/L1 Wiring Diagram

WHITE

BLACK

DOOR SWITCH

BLACK WHITE

R C Y G W

L1A

O'Fallon, MO

Diagnostic Description Low Flame Sensor Signal Flame Present

For 80+ and 90+ Single Stage Furnaces

Use copper conductors only.

Refer to the Installation Instructions provided with the furnace for the proper heating and cooling speeds for your application.

If any of the origInal wire as supplied with the furnace must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C.

FAULT CONDITIONS Diagnostic Description Green LED Red LED Control Fault (No Power) Off Off L1 / Neutral Polarity Fault Flash Flash 1 Hour Lockout Alternating Flash Normal Operation On On Pressure Switch Closed Fault On Flash Pressure Switch Open Fault Flash On Open Limit Switch Fault Flash Off

WD#710731-C

WHITE BLACK WHITE (NEUTRAL) BLACK 120V GROUND GREEN BLOWER DOOR SWITCH

FIELD WIRING LOW VOLTAGE HIGH VOLTAGE

Yellow LED Continuous Flash On

ROOM THERMOSTAT

LEGEND:

R Y G W

TRANSFORMER WHITE W/ BLK STRIPES

WHITE

VENT SAFETY SWITCH (SELECT MODELS ONLY) 24 V BLK W/ WHITE STRIPES

180 120 90 60

GAS VALVE

120 V BLACK

IGNITOR

R

AIR CONDITIONER CONDENSING UNIT

Refer to the Installation Instructions provided with the furnace for the proper heating and cooling speeds for your application.

VENT LIMIT SWITCH (ON SELECT MODELS)

GREEN BLACK BLACK BLUE BLUE BLUE ORANGE ORANGE FLAME ROLL-OUT SWITCH

GAS VALVE

BLACK BLACK

3 OR 4 SPEED MOTOR

C H MH ML L

WHITE

BLACK

709002A

BLACK WHITE 1 2 3 4 1 2 3 4 BLUE BLUE

1 24V COM 2 3

RED ORANGE BLUE BLACK WHITE

1 2 3 4 5 6 7 8 9

1 2 3 4 5 6 7 8 9

Information

709002-A G6 Control Board Replacement.indd

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