Vermont Casting 43LDVT Troubleshooting the Gas Control System, Normal Operation, 10007852

LDVT Series Direct Vent GaS Fireplace

Troubleshooting the Gas Control System

SIT 822 Valve with Synetek Electronic Control

Operating Diagram

Normal Operation

ON/OFF Switch Closed?

YES

Safe Start Check On?

YES

0 Sec Purge

NO

Abnormal Operation

5 sec Inter-Trial Delay

LED: Steady Flash?

Lockout: Flame detected out of sequence Reset by interrupting ON/OFF switch or power for 10 sec

LED: 5 Flashes?

Reverse power cord polarity

Ignition Trial: 30 sec Spark ON Pilot Valve ON. Has Flame been Detected within 30 sec?

Spark Off. Main Valve ON.

Pilot Flame Continuously

Monitored

Pilot Flame Sense OK?

ON/OFF Switch Opened?

YES

Pilot and Main Valve OFF?

YES

NO

NO

LED: 2 Flashes?

Reset by interrupting ON/OFF switch for power for 10 sec

YES

Pilot, Valve OFF, Spark OFF

Have three ignition trials been completed? NO

LED: 3 Flashes?

Lockout: Flame Loss

Reset by interrupting ON/OFF switch or power for 10 sec

YES	Main Valve OFF, Spark ON
	Has flame been detected within 30 sec?
			NO
		Have three pilot flame losses been		YES
		detected?

0 sec Post Purge?

Heating Cycle Complete LED:

OFF

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