Samsung Dryer High Limit Thermostat WW02F00173 – Overheating Protection Replacement

The high limit thermostat is your dryer's last line of defence against overheating. When part WW02F00173 fails, the dryer either shuts off mid-cycle to prevent a fire, or worse — stops cutting out entirely, allowing the drum to overheat and damage clothing or internal components. This is a safety-critical repair that should not be deferred.

Common Symptoms of a Failed High Limit Thermostat

• Dryer shuts off before the cycle completes
• Dryer runs but produces no heat
• Clothes still damp after a full cycle
• Dryer trips the breaker or cuts power unexpectedly
• Error codes related to overheating or thermal cutoff
• Burning smell during operation

Part Details

• OEM Part Number: WW02F00173
• Cross-References / Replaces: WE4M160, 540B146P02
• Type: High Limit Thermostat (Thermal Cutoff)
• Brand Fit: Samsung
• Function: Monitors exhaust temperature and cuts power to the heating element if a safe threshold is exceeded
• Note: This part is No Longer Available (NLA) from the OEM — stock is limited to available used units

Installation Notes

• Skill Level: Intermediate DIY — requires accessing the rear panel or drum assembly depending on model
• Always disconnect power before beginning any repair
• Tools needed: Phillips screwdriver, 1/4" nut driver, multimeter (recommended to confirm failure before ordering)
• Test the old thermostat with a multimeter — should show continuity at room temperature; no continuity confirms failure
• Do not bypass or jumper the thermostat — this is a fire safety component
• Clear lint from the exhaust duct before reassembly

Compatible Models

Fits select Samsung dryer models including DV series front-load and top-load configurations. Cross-references WE4M160 and 540B146P02. Confirm your full model number before ordering — this is an NLA part with limited availability.