GPGM3 Installation Manual
30
IGNITION CONTROL DIAGNOSTIC INDICATOR CHART
Red Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual
1 Flash External Lockout
2 Flashes Pressure Switch Stuck Open
3 Flashes Pressure Switch Stuck Closed
4 Flashes Thermal Protection Device Open
Amber Light Signal Refer to Abnormal Heating or Cooling Operation Sections of this Manual
On Normal Flame
1 Flash Low Flame Current
Circulator
Blower
HIGH
OFF
Seconds
Gas Valve
Igniter
Induced
Draft
Blower
Thermostat
LOW
HIGH
OFF
LOW
OFF
ON
HIGH
OFF
LOW
HIGH
OFF
LOW
Circulator
Blower
Compressor
Outdoor Fan
HIGH
OFF
LOW
HIGH
OFF
LOW
HIGH
OFF
LOW