Vermont Casting 7PDVS manual Troubleshooting the Power Vent System, DV Power Vent System, Start

DV Power Vent System

Troubleshooting the Power Vent System

SIT 822 Valve with Synetek Electronic Ignitor and Synetek Power Vent Board

Service must be performed by a qualified installer, service agency or your gas supplier.

BEFORE COMMENCING TO TROUBLE SHOOT THE UNIT:

1.Check if there is power to the unit (fireplace) and to the power vent box.

2.Check if there is gas to the unit (fireplace).

3.The ignition control in the fireplace is equipped with a lockout device which will put the unit into a lockout condition after three attempts to ignite the pilot. Follow the steps in the chart below to reset the control: Turn the On/Off switch to the off position, or turn the thermostat to the off position.

Wait 10 seconds and then turn to the “on” position.

4.If this is the first time that the unit has been fired, check the wiring of the unit against the wiring diagram before commencing troubleshooting.

START
				ON/OFF switch or wall thermostat “ON”?
			NO	Is there 120V power to the fireplace and power vent?
Power vent motor				Are all wiring connections tight? (Turn off Power before checking)
is working?				Is the LED light on the ignition control board giving an error code? (Refer to Page 14)
	YES				YES	YES	Is there 120V Power to the motor?			YES
				Is there 24V at the power vent circuit
				board at the 24VAC Hot Terminal?					NO
					NO		Replace Power Vent Circuit Board
		Check R & W from ignition control board are not crossed between power
		vent circuit board and ignition control board. (R) 24V AC Hot must con-						Replace ignition control board
		nect to 24V AC Hot at power vent circuit board. (W) Thermostat must
		connect to ignition control Hot at power vent circuit board.

Replace Blower

Does the Pilot

Spark?

YES

NO

Is there 24V power at terminal 7 (24V) at the ignition board?

YES

Is the lead to the spark electrode attached or arcing to ground?

Is the electrode cracked?

NO

NO

Is the Pressure Switch Closed?

YES

Replace Power

Vent Circuit Board

NO

Is there a blockage in the vent? Is there water/dirt in the hose from blower to the pressure switch? Are hose connections loose?

Is the hose cracked?

Is the hose connected to the low pressure side of the pressure switch?

NO

Replace

Pressure

Switch

Replace Ignition Module

NO

YES

Pilot Burner

Is there 24V power at terminal

Is pilot gas line blocked?

NO

Lights?

3 (PV) during spark cycle?

Is pilot orifice blocked?

Replace Gas Valve

Are wires to valve loose

NO

YES

or corroded?

NO

Replace Ignition Module

YES

Does Spark

Does pilot flame cover

Is flame rod corroded?

Stop When

the flame rod?

Is pilot hood corroded?

NO

Replace Ignition Module

Pilot Lights?

Is flame rod insulator cracked?

NO

Is wire to flame rod damaged?

YES

Check Pilot for obstruction

Check Gas Pressure

Adjust Pilot Flame

Check

Is there 24V power at terminal

YES

NO

Is there manifold pressure?

YES

position

Does Main

NO

Are wires to valve

2 main valve hot during spark

of pilot.

Burner Light?

cycle?

loose or corroded?

NO

Is orifice

NO

Replace Gas Valve

blocked?

YES

Replace Ignition Module

Is vent partially blocked?

System Runs

Is the correct size of orifice restrictor installed in the power vent?

Is there water/dirt in hose to

Continuously

NO

Does the pilot flame covers the flame rod?

pressure switch?

Until Switched

Is the flame rod wire in good condition?

Are hose connections loose?

NO

Replace

Off?

Is there continuity to ground from the pilot burner?

Is the hose cracked?

Pressure

Is the hose connected to the

YES

low pressure side of the pres-

Switch

Does pressure switch open during operation?

YES

sure switch?

NO

YES

Replace power vent circuit board

Does 24V power get interupted at terminal 7 (24V) at the ignition module?

NO

WARNING: Never jump the pressure switch out of this

Replace ignition module

system. Property damage, injury or death may result.

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