Troubleshooting - Rheem RGRJ series Installation Instructions Manual

FIGURE 62
MODELS WITH HONEYWELL S9201E2001 OR UTEC 1012-920 CONTROL BOARD
INTEGRATED FURNACE CONTROL (IFC) TROUBLESHOOTING GUIDE
(115 VAC IGNITER)
START
1. SET FAN SWITCH TO AUTO
2. SET THERMOSTAT TO
CALL FOR HEAT
INDUCED DRAFT MOTOR
(IDM) STARTS
YES
30 SEC. PREPURGE
YES
IGNITER WARMS UP
AND GLOWS RED
30 SECONDS WARMUP
YES
MAIN BURNER
LIGHTS
YES
WARNING
!
HAZARDOUS VOLTAGE
DISCONNECT POWER BEFORE
LINE VOLTAGE
SERVICING.
CONNECTIONS CAN
SERVICE MUST BE BY A TRAINED,
CAUSE PERSONAL
QUALIFIED SERVICE TECHNICIAN.
INJURY OR DEATH
NO
• REMOVE (IFC) COVER, CHECK LIGHTS
POWER LED ON
YES
MICROPROCESSOR STATUS LED ON
NOTE: "OK LED WILL FLASH TO INDICATE
TWINNING CIRCUIT FAULTS.
YES
CHECK FOR 24 VAC FROM
TERMINAL "W" TO "C" ON IFC
• CHECK LIMITS, (CLOSED)
• CHECK WIRING
• CHECK PRESSURE SWITCH, (OPEN)
NO IF THE PRESSURE SWITCH DOESN'T
CLOSE WITHIN 60 SEC. THE IDM WILL
STOP FOR 5 MIN. AND RETRY
• CHECK FOR 115VAC TO IDM MOTOR
YES
REPLACE IDM MOTOR
NO
• CHECK FOR BLOCKED VENT
• CHECK AIR PROVING SWITCH (CLOSED)
• CHECK WIRING TO IGNITER
• CHECK FOR 115 VAC AT IGNITER,
TERMINALS AND AT (IFC) TERMINALS
YES
REPLACE IGNITER
NO
SYSTEM WILL ATTEMPT TO LIGHT 4 TIMES. VOLTAGE IS PRESENT
AT THE VALVE FOR ONLY 9 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 180 SEC. IF THE FIRST AND SECOND IGNITION
TRIALS FAIL TO SENSE FLAME
• CHECK FOR 24 VAC ACROSS THE VALVE AND
VALVE TERMINALS ON THE (IFC)
• CHECK IGNITER POSITION
• CHECK FOR GAS FLOW TO AND FROM VALVE
NO
REPLACE VALVE
FLOW CHART CONTINUED ON NEXT PAGE
• CHECK LINE VOLTAGE POWER
NO • CHECK LOW VOLTAGE TRANSFORMER
NO
REPLACE (IFC)
NO
CHECK THERMOSTAT
NO
REPLACE SWITCH
NO
REPLACE (IFC)
IDM MOTOR IS OK
NO
REPLACE SWITCH
REPLACE (IFC)
NO
IGNITER IS OK
REPLACE (IFC)
WIRING
IF WIRING TO
IF WIRING TO
NO
IF WIRING TO
VALVE IS OK
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