All installations and services must be performed by qualified service personnel.

TROUBLESHOOTING GUIDE

THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO CALL FOR

HEAT. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF

MALFUNCTION OR DEVIATION FROM THE NORMAL OPERATION.

TO USE THIS DIAGRAM, FOLLOW THE INSTRUCTIONS IN THE BOXES.

TURN THERMOSTAT TO CALL FOR HEAT DOES THERMOSTAT MAKE CONTACT?

No

Yes

IS ROOM TEMPERATURE BELOW THERMOSTAT SETTING?

No

IS ROOM

TEMPERATURE

ABOVE

90 DEGREES F?

Yes

No

TURN T'STAT SETTING ABOVE ROOM TEMP.

Yes

COOL THE THERMOSTAT

IS THE TRANSFORMER SUPPLYING 24 VOLTS TO THE THERMOSTAT?

Yes

REPLACE

No

 

No

 

ARE WIRES CONNECTED

CORRECT WIRE

 

PROPERLY?

 

CONNECTIONS

 

 

 

 

 

 

 

 

Yes

THERMOSTAT

IS INTERNAL DAMAGE

No

PRESENT ON THE

 

TRANSFORMER?

 

Yes

REPLACE TRANSFORMER

CHECK INPUT

POWER, SERVICE SWITCH AND FUSES

IS THE INDUCER

BLOWER OPERATING?

No

IS THERE 24 VOLTS ACROSS "TH" & "TR"

AT THE INTEGRATED

CONTROL?

No

CHECK FOR CONTINUITY

&PROPER CONNECTIONS

Yes

Yes

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Lodge Manufacturing GMD1-80N manual Turn Tstat Setting Above Room Temp