Rheem RGRJ series Installation Instructions Manual page 57

FIGURE 64
INTEGRATED FURNACE CONTROL (IFC) UTEC 1012-925 (115 VAC IGNITER)
NOTE: STATIC DISCHARGE CAN DAMAGE INTEGRATED FURNACE CONTROL (IFC)
• "OK" LED BLINKS TO INDICATE EXTERNAL FAULTS:
(1) BLINK FOLLOWED BY A 2 SEC. PAUSE - 1 HOUR LOCKOUT
(2) BLINKS FOLLOWED BY A 2 SEC. PAUSE - PRESSURE SWITCH IS OPEN
(3) BLINKS FOLLOWED BY A 2 SEC. PAUSE - LIMIT SWITCH IS OPEN
(4) BLINKS FOLLOWED BY A 2 SEC. PAUSE - PRESSURE SWITCH SHORTED
START
1. SET FAN SWITCH TO AUTO
2. SET THERMOSTAT TO CALL
FOR HEAT
YES
INDUCED DRAFT BLOWER
MOTOR STARTS
YES
5 SEC. PREPURGE
YES
PURGE CONTINUES
IGNITER WARMS UP
AND GLOWS RED
30 SECONDS WARMUP
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
INTEGRATED FURNACE CONTROL (IFC)
TROUBLESHOOTING GUIDE
NO
• REMOVE (IFC) COVER, CHECK LIGHTS
CHECK FOR 24 VAC
POWER FROM "R"
TO "C" ON IFC
YES
MICROPROCESSOR STATUS "OK" LED ON
YES
CHECK FOR 24 VAC FROM
"W" TO "C" ON IFC
• CHECK LIMITS, (CLOSED)
• CHECK WIRING
• CHECK PRESSURE SWITCH, (OPEN)
IF THE PRESSURE SWITCH DOESN'T
CLOSE WITHIN 60 SEC. THE IOM WILL
STOP FOR 5 MIN. AND RETRY
• CHECK FOR 115VAC TO DRAFT MOTOR
YES
REPLACE DRAFT MOTOR
NO
• CHECK FOR BLOCKED VENT
• CHECK AIR PROVING SWITCH (CLOSED)
• CHECK WIRING TO IGNITER
• CHECK FOR 115VAC AT IGNITER,
TERMINALS AND AT (IFC) TERMINALS
YES
REPLACE IGNITER
(115 VAC IGNITER)
• CHECK LINE VOLTAGE POWER
NO
• CHECK LOW VOLTAGE TRANSFORMER
NO
NO CHECK THERMOSTAT
WIRING
NO
NO
NO
REPLACE (IFC)
NO
IF WIRING TO
IGNITER IS OK
REPLACE (IFC)
REPLACE SWITCH
REPLACE (IFC)
IF WIRING TO
DRAFT MOTOR IS OK
REPLACE SWITCH
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