LG DLGX3701V Thermostat – What Part Fixes Temperature, Overheat or No-Heat Issues?
Need the replacement part? Search your model number at for guaranteed fit and fast free shipping.
Understanding the Problem
The LG DLGX3701V can develop temperature-control problems caused by a failed thermostat, thermal fuse, or temperature sensor. Typical failures produce either no heat, intermittent heating, or overheating caused by a thermostat or thermal cutoff that is stuck closed. Because several parts monitor and control temperature, it’s important to isolate which component has actually failed. Thermostat-related faults are common after restricted vents (which stress thermal parts) or when a heating element begins to short. Replacing the correct thermostat or thermal fuse fixes most temperature issues, but you should always confirm the failed component with simple electrical tests and a venting check before replacing parts to avoid repeat failures.
Common Symptoms
Dryer won’t heat at all, heats intermittently, runs but overheats and trips, dryer stops mid-cycle, or dryer runs but clothes remain damp despite long cycles.
Common Causes
- Blown thermal fuse (open circuit) due to lint restriction or blower/heater short
- Failed cycling or operating thermostat (no continuity or stuck closed)
- Faulty temperature sensor/thermistor or wiring harness (incorrect resistance or intermittent)
- Restricted venting causing overheating and tripping thermal cutouts
- Shorted heater element causing unusual thermostat behavior or blown fuses
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Start by testing the thermal fuse for continuity with a multimeter — a blown thermal fuse is the most common single cause of a dryer that won’t heat. If the fuse is good, test the cycling/operating thermostat and any NTC thermistor for continuity/resistance at room temperature before replacing parts.
Frequently Asked Questions
How do I test the thermostat or thermal fuse on my LG DLGX3701V?
Unplug the dryer first. Locate the thermal fuse and thermostat(s) behind the dryer front or rear panel (consult the service manual or parts diagram). Remove the connector(s) and test for continuity with a multimeter set to the ohms setting. A thermal fuse should show no continuity if blown. A working cycling/operating thermostat typically shows continuity at room temperature (specific thermostats vary). For a thermistor, measure resistance and compare to the OEM spec (commonly ~10kΩ at 25°C on many models). Replace any component that is open or outside spec.
Can I replace the thermostat or thermal fuse myself?
Yes—if you are comfortable with basic appliance disassembly and have a multimeter and simple hand tools. Always unplug the dryer before starting and take pictures of wiring before disconnecting. Replace with the exact OEM or compatible part for DLGX3701V. If you find a blown thermal fuse, check and clear lint/venting and inspect the heating element for shorts before powering up the repaired dryer. If you’re not comfortable working with electrical components, hire a qualified appliance technician.
Real DIY Repair Stories
Be the first to share your repair story!
Share Your Repair Story
Your experience helps other homeowners fix their appliances. Tell us how it went!
Can't Fix It Yourself? Find a Local Technician
It's perfectly okay to call a professional. Some repairs require specialized tools, deep teardowns, or dealing with complex systems that are better left to the pros.
Find the Right Part for Your Appliance
Don't guess — search your exact appliance model number at PartsDiscount.com to find the correct OEM compatible replacement part. They offer fast free shipping, guaranteed fit, and thousands of parts in stock.
Your Free Parts Videos
Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.