Lincoln 1100-000-A SERIES (SN 2038615 & BELOW) service manual Symptom Possible Cause Evaluation

	TROUBLESHOOTING GUIDE
	GAS OVENS
1154-000-EA	NAT. GAS	230VAC		50 HZ.	1 PHASE
1155-000-EA	LP GAS	230VAC		50 HZ.	1 PHASE
REFER TO PROPER SCHEMATIC FOR IDENTIFIED COMPONENTS
SYMPTOM	POSSIBLE CAUSE		EVALUATION
Oven fan will not run	Incoming power supply		Check breakers, reset if required. Check power
			plug to be sure it is firmly in receptacle.
			Measure incoming power, call power co. if
			needed
	Fuse, 10A		Check, replace if necessary.
	Fuse holder		Check, replace if necessary.
	Hi-limit thermostat, control		Check for voltage on both sides of the switch.
	box		Terminals are normally closed. If open, reset
			and test oven for proper operation. If
			thermostat will not hold, and control box
			temperature is not exceeding 140° F (60° C)
			replace thermostat.
	Main fan switch		With power off, Check continuity between
			switch terminals. Replace as needed.
	Main fan motor		Check for opens, shorts or grounds. With
			power off, turn fan blade to check for locked
			rotor.
	Capacitor		Check for shorts or grounds.
			WARNING: Capacitor has a stored charge,
			discharge before testing.
No control box cooling	Incoming power supply		Check main circuit breakers, reset if required.
			Call power co. if needed.
	Main fan switch		With power off, Check continuity between
			switch terminals. Replace as needed.
	Cooling fan		Line voltage should now be at the cooling fan.
			If voltage is present, check motor for shorts or
			opens. With power off, check for locked rotor.
No automatic control box	Incoming power supply		Check main circuit breakers, reset if required.
cooling			Call power co. if needed.
	Cooling fan thermostat		Check the cooling fan thermostat (thermostat
			closes at 120° F and opens at 100° F). With the
			cooling fan thermostat preheated, check for
			continuity. If switch is open, replace thermostat.
Oven will not heat	Gas supply		Check for adequate gas supply and be sure
			that manual gas shut off valve is open. Also
			check flexible gas line connection.
	Main fan		If not operating, refer to “Main fan will not run”
	Gas pressure switch		This switch is located inside the gas valve and
			should close when gas pressure is present.
			WITH POWER OFF: Remove 3 prong plug (on
			gas valve) and measure continuity between
			terminals 2 and 3. If no continuity, check the
			following: Proper gas pressure supply to gas
			valve as marked on the oven specification
			plate. Check for proper adjustment of gas
			pressure switch, 10 for Nat. gas, 27 for LP gas
			or 4.5 for town gas. Check the filter in gas
			valve for blockage or damage. If above checks
			are okay, but pressure switch is still not closed,
			replace gas valve.

6 Impinger II – 1100-000-A Series (SN 2038615 & Below) Service Manual –Int’l