Troubleshooting Guide - Honeywell SUPER TRADELINE S8610U Installation Instructions Manual

Troubleshooting Guide

Refer to the following guide for troubleshooting the S8610U control module.
START:
BEFORE TROUBLESHOOTING,
FAMILIARIZE YOURSELF WITH THE
STARTUP AND CHECKOUT
PROCEDURES.
TURN GAS SUPPLY OFF
TURN THERMOSTAT
(CONTROLLER) TO
"CALL FOR HEAT"
POWER TO
MODULE? (24 V
NOMINAL)
YES
(IF CONFIGURED)
DAMPER
SWITCH
CHECK OK?
YES
IF CONFIGURED, BEGIN
PREPURGE FOR 30 SECONDS
SPARK
ACROSS IGNITER/
SENSOR
GAP?
YES
TURN GAS SUPPLY ON AND
RECYCLE "CALL FOR HEAT"
PILOT
BURNER
LIGHTS?
YES
SPARK
STOPS WHEN
PILOT IS
LIT?
YES
MAIN
BURNER
LIGHTS?
YES
SYSTEM
RUNS UNTIL "CALL
FOR HEAT"
ENDS?
YES
"CALL FOR HEAT" ENDS
SYSTEM
SHUTS
OFF?
YES
REPEAT PROCEDURE UNTIL
TROUBLE FREE OPERATION
IS OBTAINED
S8610U UNIVERSAL INTERMITTENT PILOT GAS IGNITION CONTROL
NOTE: 24 VAC "CALL FOR HEAT" IS ALWAYS CONNECTED TO THE TH-W TERMINAL ON THE MODULE.
CHECK LINE VOLTAGE POWER, LOW VOLTAGE TRANSFORMER, LIMIT CONTROLLER, THERMOSTAT (CONTROLLER), AND WIRING.
ALSO, CHECK AIR PROVING SWITCH ON COMBUSTION AIR BLOWER SYSTEM (IF USED) AND THAT THE END SWITCH (IF USED) IS MADE.
NO
DAMPER SWITCH CHECK:
- IF DAMPER IS OPEN, CONTROL WAITS 60 SECONDS FOR DAMPER TO CLOSE. ONCE CLOSED, CONTROL WAITS
60 SECONDS FOR DAMPER TO REOPEN.
- IF DAMPER IS CLOSED, CONTROL WAITS 60 SECONDS FOR DAMPER TO OPEN.
NO
CHECK DAMPER CONNECTION, DAMPER WIRING, AND 24 V CONNECTION ON CONTROL.
REPLACE DAMPER AND DAMPER HARNESS IF NECESSARY.
PULL IGNITION LEAD AND
CHECK SPARK AT MODULE.
NO
CHECK IGNITION CABLE, GROUND WIRING, CERAMIC INSULATOR, AND GAP AND CORRECT.
CHECK BOOT OF THE IGNITION CABLE FOR SIGNS OF MELTING OR BUCKLING.
TAKE PROTECTIVE ACTION TO SHIELD CABLE AND BOOT FROM EXCESSIVE TEMPERATURES.
CHECK THAT ALL MANUAL GAS VALVES ARE OPEN, SUPPLY TUBING AND GAS PRESSURES ARE TO SPECIFICATION, AND
PILOT BURNER ORIFICE IS NOT BLOCKED.
CHECK ELECTRICAL CONNECTIONS BETWEEN MODULE AND PILOT OPERATOR ON GAS CONTROL.
NO
CHECK FOR 24 VAC ACROSS PV-MV/PV TERMINALS ON MODULE. IF VOLTAGE IS OKAY, REPLACE GAS CONTROL. IF NOT,
REPLACE MODULE.
NOTE: IT MAY BE NECESSARY TO RECYCLE THE "CALL FOR HEAT" TO CLEAR THE PILOT SUPPLY TUBING OF AIR.
NOTE: IF MODULE GOES INTO RETRY DELAY, RESET THE "CALL FOR HEAT."
CHECK CONTINUITY OF IGNITION CABLE AND GROUND WIRE.
CLEAN FLAME ROD.
NO
CHECK ELECTRICAL CONNECTIONS BETWEEN FLAME ROD AND MODULE.
CHECK FOR CRACKED CERAMIC FLAME ROD INSULATOR.
CHECK THAT PILOT FLAME COVERS FLAME ROD AND IS STEADY AND BLUE.
ADJUST PILOT FLAME IF NECESSARY.
IF PROBLEM PERSISTS, REPLACE MODULE.
CHECK FOR 24 VAC ACROSS PV-MV/PV TERMINALS ON MODULE. IF NO VOLTAGE, REPLACE MODULE.
NO
CHECK ELECTRICAL CONNECTIONS BETWEEN MODULE AND GAS CONTROL. IF OKAY, REPLACE GAS CONTROL.
NOTE: IF MODULE GOES INTO RETRY DELAY, RESET THE "CALL FOR HEAT."
CHECK CONTINUITY OF IGNITION CABLE AND GROUND WIRE.
NOTE: IF GROUND IS POOR OR ERRATIC, SHUTDOWNS MAY OCCUR OCCASIONALLY EVEN THOUGH OPERATION IS NORMAL AT
THE TIME OF CHECKOUT.
NO
CHECK THAT PILOT FLAME COVERS FLAME ROD AND IS STEADY AND BLUE.
ADJUST PILOT FLAME.
IF CHECKS ARE OKAY, REPLACE MODULE.
CHECK FOR PROPER THERMOSTAT (CONTROLLER) OPERATION.
NO
REMOVE MV LEAD AT MODULE. IF VALVE CLOSES, RECHECK TEMPERATURE CONTROLLER AND WIRING. IF NOT, REPLACE
GAS CONTROL.
Fig. 11. Troubleshooting Guide.
NO REPLACE MODULE.
SPARK OK?
YES
21
M23620
69-1955