Vermont Casting 360DVSL - Manual (Page 29)

29
360DVS Series Direct Vent Fireplaces
10006326
SIT 822 Valve with a Honeywell Electronic Igniter
NOTE: Remove glass before servicing.
START
TURN GAS SUPPLY OFF.
TURN ON/OFF SWITCH
TO CALL FOR HEAT.
POWER TO MODULE?
(24V NORMAL)
SPARK ACROSS
IGNITOR SENSOR GAP?
YES
YES
YES
TURN GAS ON.
PILOT BURNER LIGHTS?
SPARK STOPS WHEN
PILOT IS LIT?
MAIN BURNER LIGHTS?
SYSTEM RUNS UNTIL
ON/OFF SWITCH IS IN
"OFF" POSITION?
TROUBLESHOOTING
ENDS.
YES
YES
YES
NO
NO
NO
NO
NO
NO
CHECK: LINE VOLTAGE (120VAC).
LOW VOLTAGE TRANSFORMER
(19.5 MINIMUM VAC).
ON/OFF SWITCH.
WIRING CONNECTIONS.
UNPLUG IGNITION LEAD
AND CHECK SPARK
AT MODULE
(24VAC NORMAL).
SPARK OK? REPLACE MODULE.
CHECK IGNITION CABLE GROUND WIRING, CERAMIC INSULATOR,
AND GAP. CORRECT AS NECESSARY.
CHECK BOOT OF 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 PRESSURES ARE GOOD, AND PILOT BURNER ORIFICE IS NOT
BLOCKED.
CHECK ELECTRICAL CONNECTIONS BETWEEN MODULE AND PILOT
OPERATOR ON GAS CONTROL.
CHECK FOR 24VAC ACROSS PV-MVPV TERMINALS ON MODULE. IF
VOLTAGE IS OKAY, REPLACE GAS CONTROL IF NOT, REPLACE MODULE.
NOTE: IF S8600B GOES INTO LOCKOUT, RESET SYSTEM.
CHECK CONTINUITY OF IGNITION CABLE AND GROUND WIRE.
CLEAN FLAME ROD.
CHECK ELECTRICAL CONNECTIONS BETWEEN FLAME ROD & MODULE.
CHECK FOR CRACKED CERAMIC FLAME ROD INSULATOR.
CHECK THAT PILOT FLAME COVERS FLAME ROD AND IS STEADY BLUE.
ADJUST PILOT FLAME.
IF PROBLEM PERSISTS, REPLACE MODULE.
CHECK FOR 24VAC ACROSS MV-MVPV TERMINALS. IF NO VOLTAGE,
REPLACE MODULE.
CHECK ELECTRICAL CONNECTIONS BETWEEN MODULE AND GAS
CONTROL. IF OKAY, REPLACE GAS CONTROL OR GAS CONTROL
OPERATOR.
NOTE: IF S8600B GOES INTO LOCKOUT, RESET SYSTEM.
CHECK FOR CONTINUITY OF IGNITION CABLE AND GROUND WIRE.
NOTE: IF GROUND IS POOR OR ERRATIC, SHUTDOWN MAY OCCUR
OCCASIONALLY EVEN THOUGH OPERATION IS NORMAL AT THE TIME
OF CHECKOUT.
CHECK THAT THE PILOT FLAME COVERS FLAME ROD AND IS STEADY
AND BLUE.
IF CHECKS ARE OKAY, REPLACE MODULE.
NO
YES
Troubleshooting the Gas Control System