Lincoln 1164-000-EA Power supply, 2045408 & Above, necessary, replace ignition control, Main fan

	Power supply	Set the temperature to the lowest temperature setting.
		If there is sufficient microamp current, but the flame will
		not stay lit, check for proper polarity of the power
		supply.
	Ignition control	If there is sufficient microamp current, and there is
		proper polarity of the power supply, but the burner will
		not stay lit, check the reset button on the ignition
		control. If the above test is okay, replace the ignition
		control.
Oven will not heat	Gas supply	Check for adequate gas supply and be sure that the
Serial Number		manual gas shut off valve is open. Also check flexible
2045408 & Above		gas line connection.
	Main fan	If not operating, refer to “Oven fan will not run”.
	Air pressure switch	Check air switch terminals for supply voltage to
		terminals C and NO. If voltage is present on one side
		only, check for air tube blockage or misalignment. If
		these are okay, adjust air pressure switch or replace if
		necessary.
	Oven cavity hi-limit thermostat	Terminals are normally closed, opens at 350°C (660°F).
		If open, reset and test oven for proper operation. If
		thermostat will not hold for maximum oven temperature,
		and oven is not exceeding control setting, check for
		proper location of capillary bulb in its spring holder. If
		above checks are okay, replace hi-limit thermostat.
	Ignition control	Check for proper supply voltage to ignition control.
		Check for proper voltage to the burner blower motor.
		This can be checked at motor connecting plug terminal
		5 and Neutral. If voltage is present, proceed with next
		step, if not, wait 30 seconds, push reset button and try
		to restart. If this fails, check wires from burner blower
		motor to the ignition control. If the above checks okay,
		replace ignition control.
	Burner blower motor	Check for supply voltage to motor. WITH POWER OFF:
		Turn blower wheel to check for locked rotor. If supply
		voltage is present at motor connecting plug terminal 5
		and Neutral, and motor does not run, replace burner
		blower motor.
	Air pressure switch	Check for proper supply voltage switching from “NC” to
	(burner blower)	“NO” on ignition control. Check for air pressure switch
		adjustment, air tube blockage or misalignment. If these
		adjustments fail, replace air pressure switch.
	Ignition control	A pre-purge time of 30 to 60 seconds occurs after
		burner blower motor starts. Check for high voltage
		spark output from the ignition control. If there is no high
		voltage spark output, check reset button for ignition
		control. If there is still no high voltage output, replace
		the ignition control.
	Igniter/sensor assembly	Check this assembly for visible damage. Replace as
		needed. If there is no visible damage, check for voltage
		supply to igniter/sensor assembly. If there is voltage
		supplied to the igniter/sensor, but there is no spark,
		replace igniter/sensor assembly.
	Gas valve	Gas valve should open as the ignition control generates
		the high voltage spark. Place manometer on the
		pressure tap fitting (located in the gas piping just prior
		to the burner manifold) and check for gas pressure. If
		valve does not open, check reset button on ignition
		control, and all connections for tightness. If there is still
		no gas pressure, remove the ignition control from the
		gas valve. Check the coils of the gas valve for opens or

10 Impinger II – Advantage Digital Service Manual - International