Troubleshoot Frigidaire Dual-Ring Radiant Element

How the dual-ring circuit works#

The inner ring runs through the standard infinite switch or electronic control. The outer ring has an extra relay or switch that energizes it only when you select the expanded mode — an EXPAND or SIZE button on Gallery touch models, a separate toggle switch on knob models, or extra contacts in the infinite switch on some electronic-with-knob ranges.

Before you start#

• Tools: Phillips #2 screwdriver, Torx T15 for Gallery panels, multimeter, flashlight, needle-nose pliers.
• Safety: Turn off the 240V breaker and confirm the range is dead. These elements carry 240V across 3-4 terminals, and the glass cooktop is fragile and heavy (15-25 lbs) — lift it without flexing or twisting.

Step by step#

1. Confirm the symptom. Set the burner to HIGH and press EXPAND or SIZE on Gallery models; the inner ring should glow red while the outer stays dark. If both are dead, this is the wrong guide — use the single-element procedure.
2. Lift the glass cooktop. With the breaker off, remove the 2-4 rear mounting screws, release any front clips, and lift the glass from the front, propping it securely. The dual-ring element underneath has 3 or 4 wires at its ceramic terminal block, versus 2 on a single-ring element.
3. Test the outer-ring element. Disconnect the outer-ring wires at the ceramic block — the inner ring usually lands on terminals T1 and T2, the outer on T3 and T4 (or T2 and T3 on a 3-terminal element; check the diagram on the cooktop underside). On resistance, a good outer ring reads 15-30 ohms; infinite or OL means it burned through, and under 5 ohms means it shorted — either way the whole dual-ring element assembly is replaced.
4. Test the expansion switch or relay. If the outer element reads good, the expansion control is not feeding it. For a mechanical toggle, check continuity in the ON or EXPAND position (near zero ohms), and if it is open both ways the switch is dead. For a Gallery board relay, carefully restore power, set HIGH, press EXPAND, and listen for the relay click; no click means a failed board relay, while a click with no 240V at the outer-ring block means a wiring break.
5. Trace the wiring (relay clicks, no heat). With power OFF, use continuity to follow the wire from the board's expansion-relay output to the outer-ring block, checking each connector for corrosion, a loose fit, or heat damage from spill-through.
6. Replace the failed part. For a bad outer ring, remove the element-tray screws (2-4), disconnect all wires, and swap the entire dual-ring assembly — inner and outer come as one unit, so you cannot replace just the outer ring. For a bad expansion switch, fit a new switch and rewire it exactly. For a bad board relay, replace the main control board, which on Gallery models sits behind the glass touch panel.

Terminal configurations#

Know which your element uses before testing across terminals — the 3-terminal type shares a common connection at T2, while the 4-terminal type is fully independent.

After the repair#

• Outer ring now heats but the inner ring does not: an inner-ring wire was reconnected to the wrong terminal — recheck against the diagram.
• Element glows unevenly: normal for the first 2-3 uses of a new element; if it persists, it may be warped or not sitting flat.
• Expansion works only sometimes: a relay with intermittent contact is failing — replace the board before it dies fully.
• EXPAND light comes on but the outer ring stays cold: the electronics see the command, so focus on the relay output and the downstream wiring.