Rheem RGRA SERIES, Installation Instructions Manual

Page: 55 / 64

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FIGURE 63
INTEGRATED FURNACE CONTROL (IFC) UTEC 1028-927 OR JOHNSON CONTROLS G961DAJ-2401 (SPARK IGNITION)
55
•
CHECK FOR BLOCKED VENT
•
CHECK AIR PROVING SWITCH (CLOSED)
•
CHECK WIRING TO IGNITER
•
CHECK FOR SPARK AT IGNITER, ELECTRODE
1.
SET FAN SWITCH TO AUTO 2.
SET THERMOSTAT TO CALL
FOR HEAT
START
NO
NO
YES YES YES
YES YES
NO
INDUCED DRAFT BLOWER
MOTOR STARTS
YES
NO
SPARK IGNITER ENERGIZES
YES
30 SEC. PREPURGE
REPLACE (IFC)
NO
REPLACE SWITCH
NO
REPLACE (IFC)
IF WIRING TO
DRAFT MOTOR IS OK
NO
REPLACE SWITCH
NO
REPLACE (IFC) IF WIRING TO IGNITER IS OK
NO
CHECK THERMOSTAT WIRING
•
CHECK LINE VOLTAGE POWER
•
CHECK LOW VOLTAGE TRANSFORMER
•
CHECK “IN-LINE” FUSE ON TRANSFORMER LOW VOLTAGE LINE
INTEGRATED FURNACE CONTROL (IFC)
TROUBLESHOOTING GUIDE
(SPARK IGNITION SYSTEM)
POWER LED ON
IF THE PRESSURE SWITCH DOESN’T CLOSE WITHIN 60 SEC. THE IOM WILL STOP FOR 5 MIN. AND RETRY
•
REMOVE (IFC) COVER, CHECK LIGHTS
MICROPROCESSOR STATUS LED ON NOTE: “OK” LED WILL FLASH TO INDICATE TWINNING CIRCUIT FAULTS •
CHECK FOR 115VAC TO DRAFT MOTOR
REPLACE DRAFT MOTOR CHECK FOR 24 VAC FROM “W” TO “C” ON IFC •
CHECK LIMITS, (CLOSED)
•
CHECK WIRING
•
CHECK PRESSURE SWITCH, (OPEN)
YES
REPLACE IGNITER
NOTE:
STATIC DISCHARGE CAN DAMAGE INTEGRATED FURNACE CONTROL (IFC)
WARNING
DISCONNECT POWER BEFORE
SERVICING.
SERVICE MUST BE BY A TRAINED,
QUALIFIED SERVICE TECHNICIAN.
HAZARDOUS VOLTAGE
LINE VOLTAGE
CONNECTIONS CAN
CAUSE PERSONAL
INJURY OR DEATH