Samsung NX58R9421ST/AA-00 slide-in gas range Parts

To reset your Samsung NX58R9421ST gas oven, press OFF/CLEAR to stop the current cycle, then restart the oven. If the control is still acting up or an information code returns, shut off power to the range for at least 30 seconds at the breaker, then restore power and try again (see the NX58R9421ST owner's manual).

Reset options (what to try first)

• Cancel and restart: Press OFF/CLEAR, wait a few seconds, then set Bake or Broil again.
• Power reset: Turn the range circuit breaker OFF for 30 seconds, then turn it back ON.
• Clear a door lock condition: If the display shows a Lock icon and the oven will not light, hold the oven door open and press START/SET for 3 seconds to turn the lock off.
• Wi-Fi related behavior: If Smart Control features are not responding, re-enable Smart Control from the control panel and reconnect in the SmartThings app.

If the oven still will not heat after a reset

A reset helps when the control needs to be restarted, but it will not fix a failed heating or sensing part. These checks narrow it down:

• Confirm the range is fully plugged into a live, properly grounded outlet.
• If surface burners light but the oven does not, check for the Lock icon and turn door lock off.
• If the oven temperature is erratic or you get a sensor-related code, inspect the sensor circuit and consider replacing the sensor.
• If you smell gas but the burner will not ignite, the igniter or gas valve circuit may be the issue.

Symptom	Most likely area	Common next step
Beeping with an information code	Control or sensor feedback	Press OFF/CLEAR, then power reset 30 seconds
Oven will not ignite, Lock icon on	Door lock feature	Hold door open, press START/SET 3 seconds
Temperature seems wrong	Oven temperature sensor	Test/replace Samsung range oven temperature sensor DG32-00002B
No ignition glow/click in oven	Ignition system	Inspect/replace Samsung range bake igniter DG94-01012A

Why it matters

Resetting the control clears temporary logic faults and safely stops a stuck cooking cycle. If an information code returns after a power reset, it usually points to a component issue (like the oven temperature sensor, igniter, or control) that needs troubleshooting rather than repeated resets.

Last updated: January 2026

If your Samsung slide-in gas range model NX58R9421ST won’t hold the set temperature (consistently too hot or too cold), the most reliable check is comparing the oven’s actual temperature to the set temperature with an oven thermometer after a full preheat; a large, repeatable difference points to a sensing or control issue.

Quick checks first (before replacing parts)

• Confirm you are testing Bake, not Broil.
• Preheat fully, then wait an additional 15 to 20 minutes for temperature to stabilize.
• Avoid opening the door during the test; door openings can drop temperature quickly.
• Check whether the range needs a temperature adjustment (calibration) as described in the NX58R9421ST manual.
• If the control is beeping and showing an information code, clear it and retry; if it returns, follow the information-code steps in the manual.

How we test oven temperature at home

1. Place an oven-safe thermometer in the center of the middle rack.
2. Set the oven to 350°F.
3. After preheat, let it cycle for 20 to 30 minutes.
4. Record several readings as the burner cycles on and off.

What results usually mean

What you see	Most likely cause	What to do next
Off by 10 to 25°F	Normal cycling range	Keep monitoring; use recipe adjustments if needed
Off by 25 to 50°F repeatedly	Calibration needed or sensor drifting	Try the temperature adjustment in the manual
Off by 50°F+ repeatedly, or swings wildly	Temperature sensor, igniter, or control issue	Troubleshoot sensor and ignition components

Parts that commonly cause “wrong temperature” symptoms

On NX58R9421ST, a “bad thermostat” complaint is often tied to the oven temperature sensor or ignition performance.

• Samsung range oven temperature sensor DG32-00002B: If the sensor is out of range, the control can misread oven temperature.
• Samsung range bake igniter DG94-01012A: A weak igniter can delay ignition and cause long heat-up times and poor temperature recovery.
• Wiring/connectors: Heat damage or a loose connection can create intermittent readings.

Why it matters

Accurate oven temperature affects baking results, preheat time, and safety shutoffs. If the oven is overheating or showing sensor-related codes, addressing the sensor/ignition path prevents repeated errors and uneven cooking.

Last updated: January 2026

On your Samsung NX58R9421ST slide-in gas range, a single surface burner usually stops working because the burner cap or base is misaligned, the burner ports are clogged, or the igniter is not sparking. Start by reseating the cap and cleaning and drying the burner parts, then try lighting again.

Quick checks (most common fixes)

• Turn the knob to LITE and listen for clicking; if ignition fails, turn the knob OFF and wait for gas to dissipate before retrying.
• Make sure the burner cap is properly in place and the burner sits level.
• Remove the cap and burner head and clean clogged ports (grease, boil-overs), then dry completely before reassembling.
• Wipe the igniter electrode tip gently; residue can prevent a strong spark.
• Confirm the range has power (spark ignition needs electricity); check the outlet, breaker, or fuse.

What the symptom usually means

Symptom	Likely cause	What to do next
No clicking/sparking on that burner	No power to ignition system or wiring issue at that burner	Verify outlet and breaker; inspect for loose connections under the cooktop
Clicking but no flame	Cap/head misaligned, clogged ports, or gas not reaching that burner	Reseat cap/head; clean ports; confirm gas supply is on
Flame is weak, uneven, or yellow	Dirty burner parts or incorrect gas setup (LP vs natural gas)	Clean and reassemble; have gas type/orifice setup checked
Clicking continues after it lights	Knob left on LITE or ignition issue	Turn knob to a heat setting; if it still clicks, service is needed

Parts that commonly solve “won’t light” problems

If cleaning and reseating do not restore ignition, these are common replacement parts for this model:

• Range surface burner igniter DG94-00539A
• Range spark module DG96-00297A

Why it matters

A burner that does not light can allow gas to build up if the knob is left on. Correct cap placement, using the LITE position properly, and letting cleaned burner parts dry fully helps restore safe, consistent ignition.

For model-specific operating and troubleshooting steps, follow the NX58R9421ST manual.

Last updated: January 2026