Frigidaire Range Burner Orange Flame and Soot:... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) regulates gas flow to the burner through a solenoid valve. The burner relies on a precise air-to-gas ratio for complete combustion. An imbalance results in incomplete combustion, producing carbon (soot) and an orange flame. Voltage paths involve 120V AC power to the MCU, which then controls lower voltage DC signals to the gas valve.

Symptoms:

The homeowner observes an orange flame on the Frigidaire range burner, and soot is accumulating on cookware.

Possible Causes:

Incorrect air-to-gas mixture.
Dirty burner ports.
Blocked burner orifice.
Improper gas pressure.
Spider or insect infestation in the burner tube.

Solution:

1

Turn off the range and disconnect it from the breaker panel. Verify 0V AC at the receptacle with a multimeter.
2

Allow the range to cool completely. Remove the burner grates and burner caps.
3

Clean the burner caps with soap and water. Dry thoroughly.
4

Inspect the burner ports for clogs. Use a burner port cleaning tool or a straightened paper clip to clear any blockages.
5

Check the burner orifice for obstructions. Use a 5/16-inch socket to carefully remove the orifice and inspect it. Clean if necessary, but be careful not to enlarge the opening.
6

Check the gas pressure regulator. A manometer should read approximately 4 inches of water column for natural gas or 10 inches of water column for propane. Contact a qualified gas technician to adjust gas pressure.
7

Reassemble the burner components and test the burner flame. The flame should be blue with a yellow tip.

Safety Warning:

Lock Out/Tag Out (LOTO) the breaker before working on the range. High voltage is present in the control panel. Exercise caution to avoid electrical shock. Gas leaks can cause explosions or fires. If you suspect a gas leak, evacuate the area and call your gas company.

Prevention:

Regularly clean burner caps and ports. Check for spider webs or debris in the burner tubes. Have a qualified technician inspect the gas pressure annually.

Expert Tip:

To check for gas leaks around the burner components, mix a solution of dish soap and water and apply it to the gas connections. Bubbles will form if there is a leak. The service mode is activated by pressing and holding the bake and broil buttons simultaneously for 3 seconds. This can be used to test individual components.

Frequently Asked Questions

•How do I adjust the air shutter on the burner?

The air shutter is a small adjustable plate near the burner orifice that controls the air-to-gas mixture. Loosen the screw holding the shutter in place and adjust it until the flame is blue. Tighten the screw when the flame is correct.

•What size is the burner orifice and where can I find a replacement?

The orifice size is specific to the range model and fuel type (natural gas or propane). Refer to the range's parts diagram or contact a parts supplier like AppliancePartsPros or RepairClinic with your model number to find the correct replacement.

•How do I test the gas pressure regulator myself?

Testing the gas pressure regulator requires a manometer, a specialized tool for measuring gas pressure. It's generally recommended to have a qualified gas technician perform this test to ensure accuracy and safety.

Frigidaire Range Burner Orange Flame and Soot: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I adjust the air shutter on the burner?

•What size is the burner orifice and where can I find a replacement?

•How do I test the gas pressure regulator myself?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: