Lincoln 1600 are no obstructions, replace gas control valves, Flame will not stay lit, test

		are no obstructions, replace gas control valves.
Flame will not stay lit	Hot Surface Igniter	The ignition control will keep the gas control valves energized
		for 6 seconds. At the end of 6 seconds, the hot surface igniter
		must sense a flame, or, the ignition control will go into lockout.
		(The ignition control requires a minimum of 0.8 microamps
		D.C.) To check the flame sensing operation, connect a digital
		multimeter (capable of measuring D.C. micro-amps) between
		the "ground" terminal on ignition control and the ground lead.
		NOTE: This is a current measurement and the meter must be
		connected in series. If these readings are not achieved, check
		bypass orifice for obstructions, if bypass orifice is clear,
		replace the hot surface igniter.
		NOTE: The D.C. micro amp test must be conducted with the
		oven in low flame (bypass) operation. Turn the temperature
		control to its lowest setting.
	Power Supply	If there is sufficient micro-amp current, but the flame will not
		stay lit, check for proper polarity of the 120 VAC power supply
	Ignition Control	If there is sufficient micro-amp current, and the 120 VAC
		polarity is correct, but the flame will not stay lit, replace the
		ignition control.
		NOTE: Check for proper ground connection of the ignition
		control.
	NOTE: Flame should
	be lit at this time.
Low flame is on, but	Temperature Control	Check for 120 VAC at terminal #7 to neutral on temperature
no main flame		control. If no voltage, trace voltage back to fuse holder. Turn
		the temperature adjustment knob to maximum temperature
		position and check for 120 VAC at the load terminal #8 and
		neutral. If 120 VAC is present and unit is not heating, refer to
		"Temperature Solenoid Valve" for next check. If 120 VAC is
		not present, proceed.
	Thermocouple Probe	WITH POWER ON AND THERMOCOUPLE LEADS
		ATTACHED TO THE TEMPERATURE CONTROL BOARD:
		Measure the D.C. millivolt output of these leads. Refer to
		thermocouple chart on page 17 for proper readings. If these
		readings are not achieved, replace the thermocouple.
	Temperature Set	Disconnect the potentiometer leads Disconnect the pot from
	Potentiometer	the board. Place ohm meter test leads on the blue and green
		pot leads. Reading should be 1 K ohms. Place meter leads
		across the blue and purple pot leads and rotate knob from high
		to low. Repeat on green and purple leads. Check for even
		rise and fall of ohms reading to insure that there are no open
		or dead spots in the potentiometer. Check each lead to
		ground for shorts. Replace pot if it does not meet the above
		test
	Temperature Solenoid	If 120 VAC is present on the temperature control board at load
	Valve	terminal #8 to neutral, check for voltage at temperature
		regulation valve. If voltage is present, listen for valve to open
		and close. Also check for opens or shorts in the coil. Replace
		as necessary.

6 Low Profile – 1600-000-A Advantage Series Service Manual – Domestic