GPG14M Service Manual

SYSTEM OPERATION

Pin Voltage Function

1 24VAC Indoor/Outdoor Thermostat (IDT/ODT) Output

2 24VAC High Stage Compressor Output

3 24VAC Pressure Switch/Loss of Charge Switch Input

4 24VAC Indoor/Outdoor Thermostat (IDT/ODT) Input

5 24VAC Pressure Switch/Loss of Charge Switch Output

6 24VAC Low Stage Compressor Output

Table 1: Circuit Definitions and Voltage Ratings

for the 6-Circuit Connector Circuits

Pin Voltage Function

1 24VAC Limit Switch Output

2 24VAC 24VAC Input to Control

3 24VAC Limit Switch Input

4 24VAC Unused

5 24VAC 24VAC Common

6 24VAC Pressure Switch Output

7 24VAC Main Valve High Output

8 24VAC Pressure Switch Input

9 Unused Main Valve Low Output

Table 2: Circuit Definitions and Voltage Ratings

for the 9-Circuit Connector Circuits

Terminal Label

Line Voltage L1 L1

Transformer Line L1 L1

Air Circulating Blower Line 1 L1

Induced Draft Blower Low Speed DI Low or "Inducer Low"

Induced Draft Blower High Speed DI High or "Inducer High"

Condenser Fan Motor Low Speed ODF Low

Condenser Fan Motor High Speed ODF High

Line Voltage L2 L2

Transformer Line L2 L2

Air Circulating Blower Line 2 L2

Induced Draft Blower Line 2 L2

Condenser Fan Motor Line 2 L2

Direct Spark Igniter T1

Flame Detection FS

Table 3: High Voltage Terminals