Vulcan Gas Convection Oven Troubleshooting - PartsFPS

Vulcan gas convection oven troubleshooting

Convection ovens are hotter and cook faster than conventional ovens. With the many advanced features in the Vulcan gas convection ovens, we are getting yummier baked goods, meats and more. However, over a long period of usage, it gets problems. When something goes wrong with your Vulcan gas convection oven, you need to know how to fix it. So, we are here to help you by giving some Vulcan gas convection oven troubleshooting tips.

Vulcan Gas Convection Oven Troubleshooting

Here, you can check out the common Vulcan gas convection oven problems and their possible causes. If you determine the cause for the problem exactly, it helps you to fix the issue easily.

Blower Motor Does Not Run in "Cool Down or ON" Position

Look at the following things to resolve this problem.

  • Variations in the line voltage.
  • Malfunction with the power switch.
  • Switch, S3 malfunction.
  • Malfunctioning with the interconnecting wiring.
  • Check for the inoperative motor.

Blower Motor Run in "Cool Down", but not in "ON" Position

  • See if there is a malfunction with the door switch.
  • Verify the interconnecting wiring. If it is wrong, you need to adjust the connections.
  • Power switch contacts might be inoperative.

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Gas Doesn't Ignite/ No Spark/ No Ignition Light ON

  • Check for the shorted electrode on ignitor or flame sense.
  • Heat relay, R3 might have malfunctioned.
  • A high voltage ignitor cable is opened.
  • An inoperative transformer might be caused the issue.
  • The high limit thermostat could be opened.
  • Check for the malfunction of interconnecting wiring.
  • Sometimes, it might be caused by an ignition module.

Sparks but Gas Doesn’t Ignite

  • The gas solenoid valve may be in OFF or inoperative mode.
  • Check if the manual gas valve is closed.
  • There might be insufficient gas pressure and gas supply OFF.
  • A faulty ignition module could be caused your oven gas does not to ignite.
  • Also, inspect for interconnecting wiring malfunction.

Gas ignites but will Not Maintain Flame

If your convection oven is not maintaining flame, there might be an issue with the ignitor. Hence, check for the following:

  • Malfunction with the ignitor lead connections.
  • Check whether the ignitor ground is operative or not.
  • There could be insufficient gas pressure.
  • Ignitor or flame sense malfunction.
  • Snorkel vent plugged, obstructed or missing.
  • Incorrect polarity from the transformer to the ignition module.

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High or Low Heat

  • In some models, because of temperature probe malfunction, you will get excessive or low heat. Sometimes, thermostat malfunction is also caused to the problem.
  • Check to see if the temperature control board is malfunctioning.
  • Insufficient gas pressure.
  • A gas orifice might be plugged or obstructed.

Uneven Cooking

  • Check the direction of convection fan motor speed as well as direction.
  • Examine the poor combustion with the following: Snorkel vent/ exhaust vent plugged or obstructed.
  • Missing or damaging of airflow baffles.

Roast Mode Working but Not Hold Mode

If you use the roast and hold model of the oven, it comes with roast and hold modes. When the hold mode is not working, you need to check the below malfunctions.

  • Roast and hold (S3) switch malfunction.
  • Malfunctioning of R2 hold relay.
  • The timer which connects to roast and hold buttons malfunction.
  • Finally, verify the interconnection wiring malfunction.

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Vulcan Gas Convection Oven Doesn’t Heat

When your oven is not producing heat or not cooking your food perfectly, you have to check the malfunction of the high limit switch, probe, and control. You will need to replace these components if necessary. It is used for computer control models.

Vulcan Full Size Gas Convection Oven Error Codes

The error code will display on the oven's display. It will alternate between the code and the unit's cavity temperature. If you didn't find the error on display, check for environmental noise, electrical noise or vibration.

Er01 - ROM Checksum Error

It will be caused by an internal ROM malfunction. You can fix this error with the cycle power.

Er02 - RAM Checksum Error

Because of internal RAM malfunction, Er02 will occur. With cycle power, it is able to fix the problem.

Er03 - Ambient Sensor Error

If the ambient temperature is below 32 degrees Fahrenheit, you can get this error code. So, you need to verify the ambient temperature at the control.

Er04 - Configuration Error

It will occur because of microprocessor malfunction. Cycle power might be the solution.

Er05 - EEprom  Error

It indicates that the power loss while storing data.

Er06 - Zone 1 A/D Underflow Error

When an incorrect sensor type is used or measuring temperature is outside the specified range, the 06 code occurs.

To fix this error, you have to check the InP1 setup parameter. Also, know whether it matches with your sensor or not. After that, check the sensor as well as connections for an open sensor. If you solve the condition that is caused to an error, the error will be cleared.

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Final Words

Hopefully, this Vulcan gas convection oven troubleshooting guide will help you to fix the problems yourself and save money. However, we may not be covered solutions for some other Vulcan convection oven problems. If you didn’t get the fix, refer to your oven’s model Vulcan manual.

About the Author


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7/25/2023 5:20 AM
What is a ROM