TROUBLESHOOTING FLOWCHART
APPLY POWER TO
APPLIANCE
REQUEST NO FOR HEAT PRESENT?
YES
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IS | NO | WAIT FOR PRESSURE | ||||||
PRESSURE SWITCH | SWITCH TO OPEN | |||||||
PROVEN OPEN WITHIN |
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| DISPLAY ERROR | ||||
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5 SECONDS? |
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| NUMBER 7 | ||||
YES |
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COMBUSTION |
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FAN ON |
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IS |
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PRESSURE SWITCH | NO | WAIT FOR PRESSURE | ||||||
PROVEN CLOSED |
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| SWITCH TO CLOSE | ||||
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| DISPLAY ERROR | |||||
WITHIN 5 |
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| NUMBER 6 | |||||
SECONDS? |
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YES |
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ISNO
PRESSURE SWITCH
PROVEN OPEN WITHIN
5SECONDS?
YES
3 MINUTE
AUTOMATIC RESET
TIME DELAY
WAIT FOR PRESSURE
SWITCH TO OPEN
DISPLAY ERROR
NUMBER 7
ONE HOUR
AUTOMATIC RESTART
TIME DELAY
PREPURGE
COMBUSTION FAN
OFF
IS | NO | TURN OFF | ||||
COMBUSTION FAN, | ||||||
IGNITOR |
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| DISPLAY ERROR CODE | ||
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OKAY? |
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| NUMBER 8 | ||
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YES |
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IGNITOR ON FOR |
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| TURN OFF | |
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| COMBUSTION FAN | |
COMBUSTION |
| AFTER | |
FAN OFF |
| DISPLAY ERROR 3 | |
GAS VALVE OPENS
COMBUSTION FAN
ON
MAIN
BURNER LIGHTS NO
LESS
YES
YES
WAIT FOR PRESSURE |
| NO |
| IS | ||
SWITCH TO CLOSE |
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| PRESSURE SWITCH | ||
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| PROVEN CLOSED | |||
DISPLAY ERROR |
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| WITHIN 5 | |||
NUMBER 6 |
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| SECONDS? | |||
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AND IS SENSED DURING TRIAL FOR
IGNITION
GAS VALVE CLOSES
THAN 3 TRIES FOR IGNITION?
INTERPURGE
YES
IGNITOR TURNS OFF
ISYES
FLAME SENSE LOST?
NO
GAS VALVE CLOSES
NO |
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LOST | YES |
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LESS THAN 4 |
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TIMES? |
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NO |
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| IS | NO | WAIT FOR PRESSURE |
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| PRESSURE SWITCH |
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| PROVEN CLOSED |
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| SWITCH TO CLOSE |
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| DISPLAY ERROR |
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| WITHIN 5 |
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| NUMBER 6 |
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| SECONDS? |
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| YES |
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| IS | YES |
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| REQUEST FOR HEAT |
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| GAS VALVE OFF |
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NO |
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SATISFIED? |
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| Please Note: |
| The control continually monitors |
| internal circuits and external sensors. |
| Error codes noted above, and those for |
COMBUSTION FAN | |
OFF AFTER POST- | pages 30 through 32. |
PURGE DELAY |
33