Rheem RGDG, Руководство по установке

Страница: 39 / 48

• CHECK FOR BLOCKED VENT
• CHECK AIR PROVING SWITCH (CLOSED)
• CHECK WIRING TO IGNITER
• CHECK FOR 60 TO 90VAC AT IGNITER,
TERMINALS AND AT (IFC) TERMINALS
39
FIGURE 34
INTEGRATED FURNACE CONTROL (IFC) WHITE RODGERS 50A62-101
(SILICON-NITRIDE IGNITER)
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
THE IFC WILL
PERFORM A SELF-
TEST OF THE IGNITER
AND DRAFT MOTOR
CIRCUIT. IF THERE IS
AN IGNITER FAULT,
BAD CONNECTION TO
THE IGNITER, OR A
BAD GROUND
CONNECTION, THE
DRAFT MOTOR WILL
STOP AFTER A FEW
SECONDS AND LOCK-
OUT.
YES
NO
PRE-PURGE CONTINUES
IGNITER WARMS UP
AND GLOWS RED
20 SECONDS WARMUP
YES
10 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
WHITE-RODGERS 50A62-101
INTEGRATED FURNACE CONTROL (IFC)
TROUBLESHOOTING GUIDE
(SILICON-NITRIDE IGNITER)
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 “OK” LED ON
NOTE: “OK” LED WILL FLASH TO INDICATE
TWINNING CIRCUIT FAULTS
• CHECK FOR 115VAC TO DRAFT MOTOR
REPLACE IOM 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)
W
ARNING
DISCONNECT POWER BEFORE SERVICING. SERVICE MUST BE BY A TRAINED, QUALIFIED SERVICE TECHNICIAN.
HAZARDOUS VOLTAGE
LINE VOLTAGE CONNECTIONS