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, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES.
NOTE: CHECK DIAGNOSTIC CODE THROUGH VIEW PORT PRIOR TO REMOVING ACCESS DOOR.
TURN THERMOSTAT TO CALL FOR HEAT DOES THERMOSTAT MAKE CONTACT?
No
Yes
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IS ROOM TEMPERATURE | IS ROOM | |||||||
TURN T'STAT | ||||||||
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BELOW THERMOSTAT |
| TEMPERATURE |
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| SETTING ABOVE | |||||
SETTING? |
| ABOVE 90 DEGREES F? |
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| ROOM TEMP. | |||||
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| Yes |
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Yes
IS THE TRANSFORMER SUPPLYING 24 VOLTS TO THE THERMOSTAT?
Yes
REPLACE
THERMOSTAT
COOL THE THERMOSTAT
No |
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ARE WIRES CONNECTED | No |
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PROPERLY? |
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Yes |
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IS INTERNAL DAMAGE | No |
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PRESENT ON THE |
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TRANSFORMER? |
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Yes |
REPLACE TRANSFORMER
CORRECT WIRE CONNECTIONS
CHECK INPUT POWER, DOOR INTERLOCK, SERVICE SWITCH AND FUSES.
IS THE INDUCER
BLOWER OPERATING?
Yes
No
IS THERE 24 VOLTS ACROSS "TH" & "TR"
AT THE INTEGRATED CONTROL MODEL?
Yes
No
CHECK FOR CONTINUITY
&PROPER CONNECTIONS
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