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
• CHECK FOR EXCESSIVE HEAT AT IGNITER BASE.
• TURN POWER OFF TO UNIT.
• CLEAN FLAME SENSOR WITH STEEL WOOL.
• RESTORE POWER TO UNIT.
• IF CHECKS ARE OK, REPLACE (IFC)
40
YES
NO
NO
MAIN BURNER
LIGHTS
YES
NO
MAIN BURNER REMAINS
POWERED AND LIT
YES
YES
YES
NO
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS
NO
INDOOR BLOWER MOTOR
STARTS 20 SECONDS
AFTER BURNERS LIGHT
YES
REPLACE BLOWER MOTOR
REPLACE VALVE
REPLACE (IFC) IF WIRING
TO VALVE IS OK
REPLACE (IFC) IF
WIRING TO BLOWER
MOTOR IS OK
NOTE: IF (IFC) GOES INTO LOCKOUT WAIT 30 SECONDS THEN
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)
SYSTEM WILL ATTEMPT TO LIGHT 4 TIMES. VOLTAGE IS PRESENT AT THE
VALVE FOR ONLY 8 SECONDS DURING EACH TRIAL FOR IGNITION (SYSTEM
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 FOR 24VAC ACROSS THE VALVE AND
VALVE TERMINALS ON THE (IFC)
NO
• CHECK IGNITER POSITION,
• CHECK FOR GAS FLOW TO AND FROM VALVE.
• CHECK FOR 115VAC ACROSS BLOWER
MOTOR AND BLOWER MOTOR TERMINALS
(HEAT AND NEUTRAL) ON (IFC)
NO
TURN THERMOSTAT TO OFF
VALVE SHUTS OFF
FLAME OFF
• CHECK FOR PROPER THERMOSTAT OPERATION.
• REMOVE VALVE LEAD AT (IFC)
IF VALVE CLOSED, RECHECK THERMOSTAT AND
WIRING IF NOT, REPLACE VALVE
YES
NO
IDM MOTOR STOPS
AFTER 5 SEC.
TROUBLESHOOTING ENDS
• CHECK FOR OPEN LIMIT,
REPLACE (IFC)
YES
NO
INDOOR BLOWER MOTOR
STOPS AFTER
90/120/160/180 SECONDS
• CHECK FOR OPEN LIMIT,
REPLACE (IFC)
REPEAT PROCEDURE UNTIL TROUBLEFREE
OPERATION IS OBTAINED.
92-22744-11-02
Summary of Contents for RGDG
Page 35: ...35 FIGURE 31 FILTER RETAINING RODS SIDE RETURN FIGURE 32 DOWNFLOW FILTER INSTALLATION...
Page 43: ...FIGURE 36 FOR MODELS WITH UTEC 1012 920 OR HONEYWELL S9201E2001 INTEGRATED FURNACE CONTROL 43...
Page 44: ...44 FIGURE 37 FOR MODELS WITH WHITE RODGERS 50A62 101 INTEGRATED FURNACE CONTROL...
Page 45: ...45 FIGURE 38 FOR MODELS WITH UTEC 1012 925 INTEGRATED FURNACE CONTROL...
Page 46: ...46...
Page 47: ...47...
Page 48: ...48 CM 398 Rheem Manufacturing Company Air Conditioning Division Fort Smith Arkansas...