5303281135 Frigidaire Gas Dryer Radiant Flame Sensor is a dedicated flame-detection component used in Frigidaire gas clothes dryers; it is a small, heat‑sensing device mounted in the dryer’s burner assembly that provides a feedback signal indicating whether combustion is present.As a sensor rather than an actuator, it is designed to withstand the burner environment and to report flame presence to the dryer’s safety and control circuitry so that the gas valve and ignition sequence are allowed to continue only while a stable flame exists.
Inside the appliance the radiant flame sensor interfaces with the ignition system, gas valve coils and the main control board or gas control module. During a normal ignition cycle the igniter heats,the gas valve opens,and the flame sensor detects the resulting combustion and delivers a low‑level electrical feedback signal used by the control electronics to keep the valve energized. The sensor is typically mounted in the burner box where it is exposed to radiant heat and combustion products; its placement, thermal response and electrical characteristics determine how reliably the control system can confirm flame presence. Because it is a safety‑critical component, contamination, mechanical damage, improper orientation, or wiring faults can cause heating interruptions, false shutdowns or safety lockouts.
In this article you will find a technical overview of the sensor’s function and how it fits into the dryer’s control and gas delivery systems, guidance on compatibility and part selection for replacement, common failure symptoms and diagnostic cues a technician can use, and practical troubleshooting and replacement considerations including inspection points and post‑replacement verification. The focus is on providing measurable diagnostic context and decision criteria useful to technicians,engineers and informed appliance owners rather than on step‑by‑step marketing or product promotion.
Table of Contents
- Function and Role of the radiant Flame Sensor in Frigidaire Gas Dryer Combustion Control
- How the 5303281135 Frigidaire Gas Dryer Radiant Flame Sensor Detects Flame and Interfaces with the Control Board
- Common Failure Symptoms and Diagnostic Indicators of Radiant Flame Sensor Malfunction
- Compatibility, Replacement Considerations, Installation Steps and Troubleshooting for 5303281135 radiant Flame Sensor Replacements
- Q&A
- In Summary
Function and Role of the Radiant Flame Sensor in Frigidaire Gas Dryer Combustion Control
The 5303281135 Frigidaire Gas Dryer Radiant Flame Sensor is a compact optical/thermal detector mounted adjacent to the burner that monitors combustion by sensing the radiant energy output of the flame. As the burner ignites, the sensor produces a low‑level electrical response proportional to the flame’s radiant intensity; the dryer’s control board interprets that signal to confirm ignition and to allow the gas valve to remain energized. As the sensor responds to radiant energy rather than flame ionization, it must be positioned with an unobstructed view of the flame front and wired directly to the control harness designed for the model series to ensure compatible signal thresholds and timing behavior.
In normal operation the sensor provides continuous feedback during the heat cycle so the control can modulate gas flow and initiate safety lockouts if the flame is lost. Common practical issues include contamination of the sensor face with soot or lint, physical misalignment, or damage to the connector or wiring, any of which can produce intermittent signals or a complete loss of flame detection resulting in no-heat conditions or repeated ignition attempts. Replacement requires the correct part number and secure mounting; technicians should verify connector fit, inspect the sensor window for deposits, and confirm that the replacement matches the dryer’s harness and control logic.
- Typical symptoms of sensor issues: no heat, extended ignition attempts, or dryer entering safety lockout
- Installation checks: sensor orientation, connector integrity, and sensor window cleanliness
- Compatibility note: use the specified part number and matching harness to avoid signal mismatch
| Item | Description |
|---|---|
| Component type | Radiant flame detector mounted at burner throat |
| Function | Generates a low‑level electrical signal proportional to flame radiant energy for the control board |
| Typical mounting | Bracketed near the burner with unobstructed view of flame |
| Signal interface | Direct connector to dryer control harness; requires correct part/harness compatibility |
How the 5303281135 Frigidaire Gas Dryer Radiant Flame Sensor Detects Flame and Interfaces with the Control Board
The 5303281135 Frigidaire Gas Dryer Radiant Flame sensor is a small, heat-sensitive device mounted adjacent to the burner that monitors the presence of the burner flame by sensing its radiant and thermal output. The sensor element changes electrical characteristics when exposed to flame heat-either producing a small millivolt signal or changing its resistance-which the dryer’s control electronics interpret as a valid flame. Mechanically the part is positioned so it receives direct radiant energy from the burner tube and connects to the harness with a simple two‑pin connector; proper location and orientation are required for reliable detection and for compatibility with Frigidaire control modules that expect the specific signal behavior of the OEM sensor.
In operation the sensor provides a confirmation input to the control board: after the igniter sparks and the gas valve opens, the board looks for the sensor’s characteristic electrical response within a short timing window and will hold or cut power to the gas valve based on that input. Common failure modes include open circuits, degraded sensitivity, or intermittent readings that cause ignition lockouts or repeated trial-for-ignition cycles. Technicians typically verify function by checking for a change in resistance or a millivolt signal when the burner is lit, inspecting the mounting and wiring for contamination or heat damage, and replacing the sensor when readings remain inactive under known good flame conditions.
- Mounting/wiring: OEM fit with a two‑pin connector and specific bracket location to detect radiant heat reliably.
- Symptoms of failure: ignition lockout, repeated trial cycles, or no gas valve hold after ignition.
- Service tip: check for open circuit or no change in signal with a multimeter while the burner is running before replacing other components.
| Item | Description |
|---|---|
| Normal response | Sensor electrical characteristic changes when flame present; control board registers “flame detected.” |
| Open/no change | No flame signal – control board will not maintain gas valve; indicates sensor fault or wiring issue. |
Common Failure Symptoms and Diagnostic Indicators of Radiant Flame Sensor Malfunction
The 5303281135 Frigidaire Gas Dryer Radiant Flame Sensor is a flame-detection device mounted adjacent to the burner that converts radiant heat from the flame into a low-voltage feedback signal used by the dryer’s control and gas valve circuitry. In normal operation the sensor generates a millivolt-level output (or provides a flame-rectification path depending on the control architecture) that confirms flame presence; the control board uses this signal to maintain the gas valve and to terminate ignition attempts. Mechanical fit, sensing face orientation, and the correct electrical connector are critical for compatibility - swapping in a sensor with different thermal response or connector pinout can produce false no-heat conditions even if the part appears to fit physically.
Common failure modes manifest as persistent no-heat, intermittent heating, extended ignition trials, or lockout codes from the control. Typical diagnostic indicators include a near-zero or substantially reduced millivolt/flame-rectification signal when the burner is lit, visible carbon/soot or cracked ceramic on the sensing surface, loose or corroded connector pins, or broken wiring in the harness. Practical checks a technician can perform include a visual inspection, cleaning the sensing surface, confirming continuity to the control, and measuring the sensor’s output with the burner operating; replacement with the correct part number is the standard corrective action when the sensor fails electrical or visual checks.
- No heat or intermittent heat during cycles – often after multiple ignition attempts.
- Long ignition sequence or audible repeated sparks – control not seeing flame confirmation.
- Visible soot, cracked sensor body, or discolored sensing element on inspection.
- Millivolt-level output absent or markedly reduced when measured with burner lit.
- Intermittent connector contact or damaged harness conductors causing loss of signal.
| Item | Description |
|---|---|
| Part Number | 5303281135 – direct-replacement radiant flame sensor for specified Frigidaire gas dryer models |
| Function | Detects burner flame and provides a low-voltage/flame-rectification signal to the control |
| basic Diagnostic Test | Visual inspection, continuity check, and measuring sensor output under live burner conditions |
Compatibility, Replacement Considerations, Installation Steps and Troubleshooting for 5303281135 Radiant Flame Sensor Replacements
The 5303281135 Frigidaire Gas Dryer Radiant Flame Sensor is an OEM detection device mounted near the burner that confirms the presence and stability of the burner flame and reports that condition to the dryer control. In Frigidaire gas dryers this sensor senses flame energy-either as a thermal/infrared signal or as a flame-rectification current depending on the specific model-and produces a measurable signal the control board expects before it allows the gas valve to remain energized. Replacement compatibility is persistent by the part number, mounting footprint, harness connector, and sensing orientation; a sensor with the correct part number will match the mechanical mounting and electrical interface used by the control system, while visually similar aftermarket parts may require verification against wiring and schematic data before installation.
Installation requires basic disassembly of the dryer’s lower access/burner area after removing power and shutting off the gas; the sensor is typically held by one or two fasteners and a single wiring plug. Troubleshooting that isolates a failing sensor follows a sequence of visual inspection, connector and harness continuity checks, and dynamic electrical tests during an ignition cycle (monitor for the expected millivolt/microamp or resistance response specified in the service manual). Common field findings include contamination or soot on the sensing face, broken or shorted leads, or intermittent output that causes the dryer to cycle off the gas valve; if the sensor checks good but the dryer still fails to detect flame, test the control board outputs and grounding path before replacing additional components.
- Symptoms and quick checks: no heat or burner shuts off quickly (inspect sensor face and harness), long ignition or repeated igniter cycles (verify sensor output during ignition), visible damage or loose connector (replace sensor and retest).
| Item | Description |
|---|---|
| 5303281135 | OEM radiant flame sensor for select Frigidaire gas dryers; matches factory mounting and electrical connector; consult model-specific service sheet for test values and orientation. |
Q&A
What does the 5303281135 radiant flame sensor do in a Frigidaire gas dryer?
The radiant flame sensor detects whether the burner flame is lit.It senses the infrared heat or flame radiation and sends a signal to the dryer’s gas control/electronic control. If the sensor does not detect flame, the control will shut off the gas valve for safety and prevent the dryer from continuing to try to ignite.
What are the common symptoms of a failing 5303281135 flame sensor?
Typical symptoms include the dryer igniting briefly then shutting off, repeated ignition attempts, the dryer not staying lit, longer dry cycles, or the control locking out gas operation. You may also notice a strong gas odor if the valve stays open briefly. Visible damage, heavy soot or corrosion on the sensor are other indicators.
Where is the radiant flame sensor located and how tough is it to access?
The sensor is mounted near the burner assembly inside the dryer cabinet, typically behind a flame shield or access panel. Access usually requires disconnecting power and gas and removing the front or lower access panel. For someone comfortable with appliance disassembly the job is moderate difficulty; if you are not experienced with gas appliances, hire a qualified technician.
How can I test the flame sensor to see if its working?
First disconnect power and gas. Visually inspect the sensor and wiring for damage or heavy soot and clean if dirty. To test electrically,many radiant sensors generate a small DC millivolt signal when heated by flame; with the dryer running and the burner lit,measure the sensor output to ground with a multimeter set to millivolts (or follow the service manual specified test). If the sensor produces no signal when the burner is confirmed burning, it is indeed likely defective. If you’re unsure of the correct test values for your model, consult the dryer’s service manual or a technician.
Can cleaning the sensor fix the problem or should it be replaced?
Minor problems caused by soot,lint,or corrosion can sometimes be resolved by carefully cleaning the sensor with a soft brush or fine abrasive pad and reconnecting. However, if the sensor is cracked, heavily corroded, or does not produce the expected electrical signal after cleaning, replacement is recommended. Flame sensors are relatively inexpensive and replacement is the most reliable fix when testing indicates failure.
Is part 5303281135 an OEM part and will it fit my dryer model?
Part 5303281135 is an OEM Frigidaire radiant flame sensor used on specific Frigidaire/Electrolux/Kenmore gas dryer models. Compatibility depends on your exact dryer model number and production code. Always verify fit by checking your dryer’s parts list or entering your model number on a parts supplier or manufacturer website before purchasing.
What safety precautions should I take when replacing the flame sensor?
Always unplug the dryer and shut off the gas supply before opening the cabinet. Work in a well-ventilated area and avoid leaving the gas disconnected to an open line. Use proper tools and tighten all fittings to spec. If you are not comfortable working with gas appliances, hire a qualified service technician to avoid gas leaks or electrical hazards.
Approximately how much does replacement cost and how long does it take?
The part itself is usually low to moderate cost (check current suppliers for price), and labor to replace it is indeed typically 30-60 minutes for a technician depending on access. If you perform the replacement yourself, budget an hour for disassembly, replacement, and reassembly plus any testing of the dryer’s ignition cycle.
In Summary
The 5303281135 Frigidaire gas dryer radiant flame sensor plays a central role in safe and efficient dryer operation by reliably detecting the presence of a burner flame. When functioning correctly, the sensor ensures the gas valve remains open only while combustion is established, helping prevent unburned gas accumulation, maintaining consistent heat output, and supporting overall appliance performance.
Because flame sensors are integral to both safety and operation, accurate diagnosis is important before replacing the part. Proper testing according to manufacturer guidance or by a qualified technician helps distinguish sensor failure from other ignition or control issues, avoiding unnecessary parts replacement. When replacement is required, using the correct sensor and installation procedures restores intended performance and reduces the risk of recurring faults.
attention to the condition of the 5303281135 radiant flame sensor, combined with correct diagnosis and timely replacement, contributes directly to dryer safety, reliability, and longevity. If there is any uncertainty about testing or repair, engaging authorized service technicians is the recommended approach to ensure safe and effective resolution.
Professional Appliance Service
If your appliance requires professional diagnosis or repair, visit
Revolff Home Services
for expert appliance repair services.
For local appliance service information see
Dryer repair Henderson
.
Replacement parts for many appliance models can also be found at
Reliable-Parts-Hub
.
