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Fix a commercial griddle that will not heat

We'll confirm the griddle powers on, rule out power and gas supply, then isolate the cause—burner, heating element, thermostat, or thermal fuse—or tell you when to call a pro.

Troubleshooting · Home appliances
15–45 min
What you'll need
  • Multimeter (for continuity tests on electric models)
  • Screwdriver set (Phillips and flathead)
  • Replacement heating element, thermostat, or thermal fuse (if tests show a fault)
  • Pin or soft brush (for gas burner orifice cleaning)
Step 1 of 8

Quick triage — pick your path

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Steps

Goal: Confirm the symptom, rule out power and gas supply, then isolate the heating fault.

  • Turn the griddle on and set the thermostat to medium. Wait 10–15 minutes—commercial griddles need longer preheat than residential. Splash a few drops of water on the surface.
  • Good: The pilot or power indicator is on (if your model has one) but the surface stays cold—heating system has failed. Proceed to Check power and gas supply.
  • Bad: No power at all—different problem (power, cord, outlet). Check power first.

Check power and gas supply

Goal: Rule out power loss and gas supply before opening the griddle.

  • Verify the griddle is plugged in or hardwired and the circuit breaker has not tripped. Commercial electric griddles use 208–240V; both legs must be on. Reset the breaker if tripped.
  • Gas models: confirm the gas supply valve is open and the pilot light is lit. If the pilot has gone out, the thermocouple may have failed—call a technician to inspect and restore the pilot. Do not attempt to restore the pilot yourself.
  • Good: Power is on and gas is supplied (if gas). Proceed to Electric path or Gas path based on your griddle type.
  • Bad: Breaker keeps tripping or gas is off—fix those first, or call a pro.

Electric path

Goal: Test and replace the heating element, thermostat, or thermal fuse on an electric commercial griddle.

  • Unplug the griddle and let it cool. Open the access panel per your model. Check your owner’s manual or search “[brand] [model] commercial griddle service manual” for disassembly steps if unsure. Locate the heating element (coiled wire or ribbon under the cooking surface).
  • Inspect the heating element for breaks, burns, or blisters. Test for continuity with a multimeter. No continuity or visible damage means it has failed—replace with an exact match.
  • If the heating element is good, locate the thermostat and thermal fuse. Test both for continuity. Replace any that fail with exact matches.
  • Good: You found and replaced the faulty part. Reassemble and test—the griddle should heat.
  • Bad: All parts test good but the griddle still does not heat—call a technician.

Gas path

Goal: Inspect and clean the burner orifice and confirm the pilot on a gas commercial griddle. Gas valve work requires a pro.

  • Shut off the gas supply. Remove the burner cap and inspect the burner orifice for grease, carbon, or debris. Clean with a pin or soft brush—do not enlarge the orifice. Reinstall the cap and turn the gas back on.
  • The burner flame should be even and blue. Yellow or uneven flame means the orifice may still be partially blocked—clean again.
  • Good: The pilot is lit and the burner lights. The griddle heats.
  • Bad: The pilot lights but no burner flame—gas valve issue. Call a technician. Do not work on gas valves yourself.

When to get help

If you smell gas, shut off the supply and call 911 or your gas utility from outside. Do not call a technician for an active gas leak—that is an emergency.

Call an appliance technician if:

  • The gas pilot lights but no burner flame appears (gas valve).
  • You have replaced the heating element and thermal fuse and the griddle still does not heat.
  • The pilot will not stay lit (thermocouple).
  • You are not comfortable working with electricity or gas.

Verification

  • Water droplets sizzle and evaporate on the surface within 10–15 minutes of turning the griddle on.
  • The surface reaches cooking temperature (350–400°F typical for griddles).
  • Heating element, thermostat, or thermal fuse (if replaced) tests good and the griddle heats consistently.
  • Gas griddles: the burner flame is even and blue.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Verify the griddle powers on but the surface stays cold; rule out a different problem.
  2. Power and gas supply Check circuit breaker and gas supply; both can prevent heat.
  3. Electric — heating element and thermostat Test and replace heating element, thermostat, or thermal fuse if faulty.
  4. Gas — burner and pilot Inspect and clean burner orifice; confirm pilot is lit.
  5. Call a pro Gas smell—shut off supply, call 911 or gas utility from outside. Gas valve work or repeated failures—call an appliance technician.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Griddle type (electric or gas)
  • Whether the pilot or power indicator works
  • Heating element / thermostat / thermal fuse test results (electric)
  • Burner orifice and pilot status (gas)
  • Steps already tried

Does the griddle power on but the surface stay cold?

Turn the griddle on and wait 10–15 minutes. Splash water on the surface. If it does not sizzle, the heating system has failed.

Turn the griddle on and set the thermostat to medium. Wait 10–15 minutes. Splash a few drops of water on the surface. Good: pilot or indicator on but surface cold—heating fault. Bad: no power at all—different problem (power, cord); check power first.

Yes No

You can change your answer later.

Is power on and gas supply open (if gas)?

Circuit breaker and gas supply can prevent heating. Electric griddles need both legs on (208–240V).

Verify the griddle is plugged in or hardwired and the circuit breaker has not tripped. Gas: confirm the gas supply valve is open and the pilot is lit. Good: power on and gas supplied (if gas). Bad: breaker tripped or gas off—fix those first.

Yes No

You can change your answer later.

Is the griddle electric or gas?

Electric griddles have a power cord or hardwired connection. Gas griddles have a gas line and pilot.

Check behind or under the unit. Electric: thick cord or conduit. Gas: gas line and shutoff valve. Good: you know the type. Bad: unsure—call a technician.

Electric Gas

You can change your answer later.

Does the heating element have continuity?

The heating element is under the cooking surface. Test with a multimeter after unplugging and cooling.

Unplug the griddle and let it cool. Open the access panel per your model. Locate the heating element. Inspect for breaks or burns. Test for continuity with a multimeter. No continuity: element failed—replace with exact match, reassemble, test. Continuity: element good—proceed to thermostat.

Yes (good) No (broken)

You can change your answer later.

Replace heating element and test

Replace the heating element with an exact match. Reassemble and test. The griddle should heat if the element was the only fault. If it still does not heat, proceed to check the thermostat and thermal fuse.

Done

Do the thermostat and thermal fuse have continuity?

The thermostat regulates temperature. The thermal fuse cuts power when the unit overheats.

Locate the thermostat and thermal fuse. Test both for continuity. Replace any that fail. If all test good but the griddle still does not heat, call a technician.
Question

Do the thermostat and thermal fuse have continuity?

Done

Is the pilot lit and the burner orifice clean?

The pilot must be lit for the burner to ignite. A clogged orifice blocks gas flow.

Confirm the thermocouple is sensing the pilot—pilot should stay lit. Shut off gas, remove the burner cap, and inspect the burner orifice. Clean with a pin or soft brush. Reinstall and turn gas back on. Good: pilot lit and orifice clean—burner should light. Bad: pilot lights but no burner flame—gas valve issue; call a pro. Never work on gas valves yourself.
Question

Is the pilot lit and the burner orifice clean?

Continue

You can change your answer later.

Call a technician

If you smell gas, shut off the supply and call 911 or your gas utility from outside—do not call a technician for an active gas leak. Call an appliance technician if: the griddle has no power (different problem); the gas pilot lights but no burner flame (gas valve); you have replaced the heating element and thermal fuse and it still does not heat; or you are not comfortable working with electricity or gas. Never work on gas valves or gas lines yourself.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a commercial griddle power on but not heat?
Electric: a failed heating element, faulty thermostat, or blown thermal fuse. Gas: clogged burner orifice, failed pilot, or faulty gas valve. Power loss or tripped breaker can also prevent heat. Commercial griddles use 208–240V; both legs must be on for electric models.
Can I fix a commercial griddle that will not heat myself?
Yes, for electric models you can often test and replace the heating element, thermostat, or thermal fuse with basic tools. Gas models: you can inspect and clean the burner orifice and pilot. Gas valve work always requires a professional. Never work on gas lines yourself.
When should I call a technician for a commercial griddle that will not heat?
If you smell gas, shut off the supply and call 911 or your gas utility from outside. Call an appliance technician if the gas pilot lights but no burner flame (gas valve), if you have replaced the heating element and thermal fuse and it still does not heat, or if you are not comfortable working with electricity or gas.

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