None Dryer: high limit switch tripping
What is this symptom?
If your dryer’s high-limit switch is tripping, it means the appliance is overheating, causing it to shut off mid-cycle or dry clothes inefficiently. This crucial safety feature prevents fire hazards by cutting power when temperatures exceed safe levels. Often, restricted airflow due to lint buildup is the primary culprit, leading to longer drying times or no heat. Addressing this issue promptly is essential to ensure your dryer operates safely and effectively.
Possible Causes
Restricted airflow/ventilation issues
How to Identify: Dryer overheats; lint builds in filter or vent; air does not flow freely; external vent flapper or hose kinked or clogged
Part: Dryer exhaust vent, lint filter, vent hose
DIY Solutions
Clean lint filter and dryer vent
- Unplug the dryer.
- Remove and clean the lint filter.
- Disconnect the vent hose from dryer and outside cap.
- Use a vent cleaning brush and vacuum to clear lint from hose and ducts.
- Reconnect vent hose and test dryer operation.
Test and inspect high-limit thermostat
- Unplug the dryer.
- Access the high-limit thermostat location (usually near heating element housing).
- Disconnect the wires from the thermostat.
- Use a multimeter on continuity setting; check for continuity at room temperature.
- Replace thermostat if it shows no continuity.
Check heating element for shorts
- Disconnect power.
- Access the heating element assembly.
- Check each coil section to frame for unintended continuity (ground short).
- Replace heating element if coils are grounded or damaged.
Next step
Choose the next step for high limit switch tripping
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Dryer Lint Filter
Captures lint from exhaust air before it reaches the dryer vent path.
- Typical part-only price
- $15 - $55
- DIY difficulty
- Easy
- Estimated time
- 5 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Dryer parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Dryer Vent Cleaning Kit
Helps remove routine lint buildup from an accessible dryer vent path. It does not diagnose or repair an E-code or failed component.
Lint Trap Cleaning Brush
A narrow brush for routine cleaning around an accessible lint screen and housing.
Dryer Vent Hose Kit
A replacement exhaust duct option for visibly crushed or damaged external venting. Check diameter, length, local code, and installation clearance.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Replace high-limit thermostat and related temperature sensors
Service internal airflow components (blower wheel, seals)
When to Call a Professional
Preventive Maintenance
-
Clean lint filter: Restricted airflow and overheating
Frequency: After every use -
Clean exhaust vent and ducts: Airflow restriction leading to overheating and high-limit trips
Frequency: Every 3-6 months
Frequently Asked Questions
Why is my Any Dryer high limit switch tripping?
How do I fix Any Dryer high limit switch tripping myself?
How much does it cost to fix high limit switch tripping?
When should I call a technician for high limit switch tripping?
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Blocked venting system causing overheating due to inadequate airflow.
- Faulty high limit thermostat that is overly sensitive or malfunctioning.
- Moisture buildup in the dryer or venting system due to freezing temperatures, leading to condensation and overheating.
User Suggested Solutions
-
Inspect and clean the venting system. Disconnect the dryer, remove the vent hose, and clear any lint or debris. Ensure the vent is not crushed or restricted.
-
Test and replace the high limit thermostat if found defective. Use a multimeter to check for continuity and replace if necessary.
-
Insulate the venting system to prevent moisture buildup and ensure proper airflow. Use insulated ducting if necessary.
Limited-source guidance; percentages and success-rate claims are not shown
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Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
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