Lincoln 1601-000-A Oven control, the oven control, Thermocouple, the oven will not heat, proceed

	Oven control	Check for 24 VAC supply to control. If no voltage is present,
		trace wiring back to control transformer. If 24 VAC is present,
		check for a read-out on the control display. If there is 24 VAC
		supplied, but there is no read-out on the control display, replace
		the oven control.
		If there is a read-out on the control, set the control to maximum
		temperature (see installation operations manual for temperature
		adjustment). With the control set at maximum temperature,
		check for 120 VAC at temperature regulation valve. If there is
		voltage at the temperature regulation valve, proceed to
		“temperature regulation valve” for next check. If there is no
		voltage at the temperature regulation valve, trace wiring back to
		the oven control. If there is no voltage output at the oven control,
		Check the read-out on the control. If the control reads “LP FAIL”
		or “RP FAIL”, this indicates that the thermocouple has failed or
		has become disconnected from the control. “LP FAIL” indicates
		a problem with the left thermocouple probe, and “RP FAIL”
		indicates a problem with the right thermocouple probe.
	Thermocouple	Check to be sure that the thermocouple is securely connected to
		the oven control. If the thermocouple is connected to the oven
		control, and the control indicates “LP FAIL” or “RP FAIL”,
		disconnect the thermocouple from the oven control and measure
		the resistance of the thermocouple. The left thermocouple
		should read approx. 21Ω. The right thermocouple should read
		approx. 11Ω. If these readings are not achieved, replace the
		thermocouple. If these readings are correct, proceed.
	Oven control	If the thermocouple checks good, but the oven control display
		indicates that there is a thermocouple failure, replace the oven
		control. If the oven control indicates a temperature reading but
		the oven will not heat, proceed.
	Thermocouple	WITH POWER ON AND THERMOCOUPLE ATTACHED TO
		THE OVEN CONTROL: Measure the DC millivolt output of the
		thermocouple. Refer to the thermocouple chart (located in the
		“Removal” section of the manual) for proper millivolt readings. If
		these readings are not achieved, replace thermocouple.
	Oven control	If the thermocouple checks good, but there is no 120VAC output
		to the temperature regulation valve, replace the oven control. If
		there is 120VAC output to the temperature regulation valve,
		proceed.
	Temperature	Check for 120VAC supplied to temperature regulation valve. If
	regulation valve.	voltage is present, listen for valve to open and close. Also check
		for opens or shorts in the operating coil. Replace temperature
		regulation valve as needed.
Intermittent heating	Thermal/overload of	The main fan motors and burner blower motors are equipped
	main fan and burner	with internal thermal protection and will cease to operate if
	blower motors	overheating occurs. As the motors overheat and then cool, this
		will cause the heating systems to cycle on and off intermittently.
		Improper ventilation or lack of preventive maintenance may
		cause this problem. Also, most of the problem listed under
		“Oven will not heat” can cause intermittent failure.
Conveyor will not run	Power supply	Check for incoming voltage at line 1 to neutral. There should be
		a voltage reading of 120VAC. If not present, check circuit
		breakers.
	Power switch	Check continuity between switch terminals. Replace switch as
		needed.
	Fuse, 10 Amp	Check, replace if necessary.
	Fuse holder	Check, replace if necessary.

Low Profile – 1600 Series Advantage Digital Service Manual – Domestic 7