Majestic Appliances 360DVS2, 360DVSR, 360DVSL SIT 822 Valve with a Honeywell Electronic Igniter

360DVS Series Direct Vent Fireplaces

Troubleshooting the Gas Control System

SIT 822 Valve with a Honeywell Electronic Igniter

START NOTE: Remove glass before servicing.

TURN GAS SUPPLY OFF. NO

TURN ON/OFF SWITCH

TO CALL FOR HEAT.

POWER TO MODULE?

(24V NORMAL)

YES

SPARK ACROSS NO IGNITOR SENSOR GAP?

YES

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).	NO
SPARK OK?		REPLACE MODULE.

YES

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.

TURN GAS ON.	NO	CHECK THAT ALL MANUAL GAS VALVES ARE OPEN, SUPPLY TUBING
PILOT BURNER LIGHTS?		AND PRESSURES ARE GOOD, AND PILOT BURNER ORIFICE IS NOT
YES		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.

SPARK STOPS WHEN	NO	NOTE: IF S8600B GOES INTO LOCKOUT, RESET SYSTEM.
PILOT IS LIT?		CHECK CONTINUITY OF IGNITION CABLE AND GROUND WIRE.
YES		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.

NO

MAIN BURNER LIGHTS?

YES

SYSTEM RUNS UNTIL NO ON/OFF SWITCH IS IN

"OFF" POSITION? YES

TROUBLESHOOTING

ENDS.

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.

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