Vulcan-Hart VC4ED, VCIEC Error Codes, Computer Control, Code & Problem Probable Cause Solution

FULL SIZE ELECTRIC CONVECTION OVENS - TROUBLESHOOTING

Error Codes

In the display window, the error code will alternate between the code and the oven cavity temperature or dashes if the oven is calling for heat (heat light on). The exact error code displayed will depend on the priority assigned to the problem in the EPROM’S software. The lower the error code number, the higher the priority. If more than one problem occurs at the same time, the error code assigned to the higher priority problem will be displayed.

Refer to the error code table below to solve the problem. If the lower priority problem still exists, the next error code will be displayed. When the condition causing the error is resolved, normal oven operation can resume.

NOTE: To check a "Setup Parameter" and its corresponding "Data Value", see "SETUP MODE" under

"COMPUTER CONTROL".

NOTE: If the cause of the error is not apparent, check for these conditions as they may also cause errors to

occur: Electrical noise or a noise event, excess environmental moisture or temperature, or vibration.

CODE & PROBLEM	PROBABLE CAUSE	SOLUTION
Er01 - ROM checksum error	Internal ROM malfunction	Cycle power
Er02 - RAM checksum error	Internal RAM malfunction	Cycle power
Er03 - Ambient sensor error	Ambient temperature is below 32￿F	Check ambient temperature at the
		control.
Er04 - Configuration error	Microprocessor malfunction	Cycle power
Er05 - EPROM error 1	Power loss while storing data	Cycle power
Er06 - Zone 1 A/D underflow error	• Incorrect sensor type	• Check the InP1 setup parameter.
	• Measuring temperature outside	Verify it matches your sensor.
	the sensor range	• Check sensor and connections
		for a reversed or open sensor. If
		the condition causing the error is
		resolved, the error will clear.
Er07 - Zone 1 A/D overflow error	Open sensor	• Check the InP1 setup parameter.
		Verify it matches your sensor.
		• Check sensor and connections
		for a reversed or open sensor. If
		the condition causing the error is
		resolved, the error will clear.
Er10 - Stack overflow error	Microprocessor malfunction	• Cycle power
		• Check sensor and connections
		for a reversed or open sensor
Er11 - Open sensor error	Open sensor	• Check the InP1 setup parameter.
		Verify it matches your sensor.
		• Check sensor and connections
		for a reversed or open sensor
Er12 - Shorted sensor	• Incorrect sensor type	• Check the InP1 setup parameter.
	• Measuring temperature outside	Verify it matches your sensor.
	the sensor range	• Check sensor and connections
		for a reversed or open sensor

NOTE: 1. Should only see when a new EPROM is installed and powered for the first time.

F25105 (December 2001) Page 58 of 60