Rheem RGPH Installation Instructions Manual page 40

MAIN BURNER
LIGHTS
YES
MAIN BURNER REMAINS
POWERED AND LIT
YES
INDOOR BLOWER MOTOR
STARTS 20 SECONDS
AFTER BURNERS LIGHT
YES
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
YES
TURN THERMOSTAT TO OFF
VALVE SHUTS OFF
FLAME OFF
IDM MOTOR STOPS
AFTER 5 SEC.
YES
INDOOR BLOWER MOTOR
STOPS AFTER
90/120/160/180 SECONDS
TROUBLESHOOTING ENDS
40
SYSTEM WILL ATTEMPT TO LIGHT 4 TIMES. VOLTAGE IS PRESENT AT THE
VALVE FOR ONLY 8 SECONDS DURING EACH TRIAL FOR IGNITION (SYSTEM
NO
WILL GO INTO A 1-HOUR LOCKOUT AFTER 4 TRIES), THE SEQUENCE WILL
REPEAT AFTER A ONE HOUR DELAY. IT WILL CONTINUE UNTIL IGNITION IS
SUCCESSFUL OR THE CALL FOR HEAT IS TERMINATED. THE BLOWER AND
INDUCED DRAFT BLOWER WILL RUN 100 SECONDS. IF THE FIRST AND SECOND
IGNITION TRIAL FAILS TO SENSE FLAME
• CHECK IGNITER POSITION,
• CHECK FOR GAS FLOW TO AND FROM VALVE.
REPLACE VALVE
NOTE: IF (IFC) GOES INTO LOCKOUT WAIT 30 SECONDS THEN
NO
RESET SYSTEM
• CHECK POLARITY OF 115VAC SUPPLY
• CHECK CONTINUITY OF GROUND WIRE
• CHECK INSULATION ON IGNITER LEADS
• CHECK FLAME SENSE CURRENT (YELLOW LED)
LED IS ON IF FLAME CURRENT IS GOOD.
IT FLASHES IF CURRENT IS MARGINAL.
• TURN POWER OFF TO UNIT.
• CLEAN FLAME SENSOR WITH STEEL WOOL IF LED FLASHES
• RESTORE POWER TO UNIT
• IF CHECKS ARE OK, REPLACE (IFC)
• CHECK FOR 115VAC ACROSS BLOWER
NO
MOTOR AND BLOWER MOTOR TERMINALS
(HEAT AND NEUTRAL) ON (IFC)
REPLACE BLOWER MOTOR
NO
NOTE: IF (IFC) GOES INTO LOCKOUT WAIT 30 SECONDS THEN
RESET SYSTEM
• CHECK CONTINUITY OF GROUND WIRE. NOTE: IF GROUND IS
POOR OR ERATIC, SHUTDOWN MAY OCCUR OCCASIONALLY EVEN
THOUGH OPERATION IS NORMAL AT THE TIME OF CHECKOUT.
• CHECK FLAME SENSE CURRENT
• IF CHECKS ARE OK, REPLACE (IFC)
• CHECK FOR PROPER THERMOSTAT OPERATION.
NO
• REMOVE VALVE LEAD AT (IFC)
IF VALVE CLOSED, RECHECK THERMOSTAT AND
WIRING IF NOT, REPLACE VALVE
YES
NO
• CHECK FOR OPEN LIMIT,
REPLACE (IFC)
NO
• CHECK FOR OPEN LIMIT,
REPLACE (IFC)
YES
• CHECK FOR 24VAC ACROSS THE VALVE AND
VALVE TERMINALS ON THE (IFC)
YES
• CHECK FOR EXCESSIVE HEAT AT IGNITER BASE.
• TURN POWER OFF TO UNIT.
• CLEAN FLAME SENSOR WITH STEEL WOOL.
• RESTORE POWER TO UNIT.
REPEAT PROCEDURE UNTIL TROUBLEFREE
OPERATION IS OBTAINED.
NO
REPLACE (IFC) IF WIRING
TO VALVE IS OK
REPLACE (IFC) IF
NO
WIRING TO BLOWER
MOTOR IS OK
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