Control

Pilot flame but no main	Flame Sensor	(There should be a visible pilot flame at this time.)
flame		To check for proper flame sensor operation,
		connect a digital multimeter (capable of measuring
		D. C. microamperes) in series between the flame
		sensor wire (normally connected to terminal #4)
		and terminal #4. NOTE: This is a current
		measurement and the meter must be connected in
		series. This procedure is for checking the pilot
		flame only. Remove main valve wire (Red) from
		terminal #3 on ignition control. With a visible pilot
		flame, the current readings should be as follows:
		Johnson G-65 control, 0.2 micro amp. D.C.
		minimum/Johnson G-60 control, 0.7 micro amp.
		D.C. minimum. If these values are not achieved,
		replace flame sensor. Also check for any type of
		damage to flame sensor wire and connections.
	Ignition Control and Valve	If there is a pilot flame, and there is sufficient micro
	Assembly	amp. current at terminal #4, check for 24 VAC
		that the main valve (internal to valve assembly) has
		opened. Connect a manometer to the manifold gas
		pressure tap located on the back side of the ignition
		control and valve assembly. If no gas is present,
		replace ignition control and valve assembly.
For ovens with	Centrifugal Switch of Burner	Check for 24 VAC output from secondary of
Honeywell ignition	Blower Motor	transformer. If voltage is present, check for 24 VAC
control		at terminals marked "24V" and "24V gnd" on
		Ignition Control. If the Burner Blower Motor is
		running and there is no voltage at terminals 24V
		and 24V gnd on the ignition control, replace the
		Burner Blower Motor.
	NOTE:	These Ignition Controls have a 30 second pre-
		purge(Delay) and a 15 second lock-out time – The
		Ignition Control will try for ignition for 15 seconds
		and then shut-off. To Re-try for ignition, turn off
		burner switch, wait 30 seconds and re-try ignition.
	Ignition Control	Check for 24 VAC supply to ignition control at
		terminals "24V" and "24V gnd". If voltage is
		present, check for 24V at terminal "P.V. (Pilot
		Valve) and "gnd". If voltage is not present, replace
		Ignition Control. If the pilot valve is energized,
		check to see that the high voltage ignitor circuit is
		also energized. To check, disconnect the ignitor
		lead from the ignition control. Place the terminal of
		ignitor lead approximately 1/8" from terminal post
		on Ignition Control. Spark should jump the 1/8"
		gap. If no spark is present, replace ignition control.
No Pilot		If the ignition control is supplied with 24 VAC and
		the pilot valve (in gas valve) and ignitor circuits are
		energized, visually check for pilot flame. This may
		be done by opening the small inspection door on
		the end of the burner, or by opening the main oven
		door and looking under the lower finger housing in
		the right side of the oven.
	Pilot Shut-off Valve	If no pilot flame is visible, check to see that the pilot
		shut-off valve is open (shut-off valve is located
		between gas valve and burner).
	Pilot Tube	Check for gas pressure at pilot tube. Disconnect
		pilot tube at burner and connect manometer to pilot
		tube. If no gas pressure is present, check for
		blockage in pilot tube or pilot shut-off valve.
	Pilot Orifice	If there is gas pressure at the pilot tube, check the
		pilot orifice for obstructions. Replace as needed.
28		Impinger I -–1000 Series Service Manual - International

For ovens with

Honeywell ignition