Y8610U INTERMITTENT PILOT RETROFIT KIT
68-0133—2
16
Check continuity of ignition cable and ground wire.
NOTE: If ground is poor or erratic, shutdowns can occur occasionally even though operation is normal at
the time of checkout.
Check that pilot flame covers flame rod and is steady and blue.
If checks are okay, replace module.
M3313
START
Check line voltage power, low voltage transformer, limit controller, thermostat (controller) and wiring. Also,
check that vent damper (if used) is open and end switch is made.
NOTE: Before troubleshooting, familiarize yourself with the startup and checkout procedure.
NO
TURN OFF GAS SUPPLY.
TURN THERMOSTAT
(CONTROLLER) TO CALL
FOR HEAT.
POWER TO MODULE.
(24V NOMINAL)
YES
SPARK ACROSS
IGNITER/SENSOR GAP?
Pull ignition lead and
check spark at module.
NO
On models with vent damper plug, make sure vent damper
has not been installed, then removed. Replace vent damper
if necessary.
On other models, replace module.
Spark okay?
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.
YES
YES
Check that all manual gas valves are open, supply tubing and pressures are good, and pilot burner orifice is
not blocked.
Check electrical connections between module and pilot operator on gas control.
Check for 24 Vac across PV-MV/PV terminals on module. If voltage is okay, replace gas control; if not,
replace module.
NO
TURN ON GAS SUPPLY.
YES
PILOT BURNER LIGHTS?
•
•
•
NO
SPARK STOPS WHEN
PILOT IS LIT?
YES
•
•
•
•
•
•
•
•
•
Check continuity of ignition cable and ground wire.
Clean flame rod.
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 problem persists, replace module.
NO
MAIN BURNER LIGHTS?
YES
Check for 24 Vac across MV-MV/PV terminals. If no voltage, replace module.
Check electrical connections between module and gas control. If okay, replace gas control or gas control
operator.
•
•
NO
SYSTEM RUNS UNTIL
CALL FOR HEAT ENDS?
YES
•
•
•
Check for proper thermostat (controller) operation.
Remove MV lead at module; if valve closes, recheck temperature controller and wiring; if not, replace gas
control.
NO
CALL FOR HEAT ENDS.
YES
SYSTEM SHUTS OFF?
•
•
TROUBLESHOOTING
ENDS.
Repeat procedure until troublefree operation is obtained.
•
•
Fig. 19. S8610U troubleshooting guide.