Want a regional phone & address? Pick your area.
Speed Queen·Dryerhigh severity
Speed Queen Dryer Error Code tH
Thermistor open or shorted — exhaust temperature sensor fault
Common Causes
- 1Exhaust thermistor failure
- 2Wiring to thermistor damaged
- 3Connector corrosion from moisture
- 4Thermistor dislodged from exhaust housing
Step-by-Step Troubleshooting
- 1
Locate the exhaust thermistor on the blower housing or exhaust duct
- 2
Measure resistance — should read approximately 10K ohms at room temperature
- 3
Inspect the two-wire connector for green oxidation or moisture intrusion
- 4
Check wiring harness routing to ensure it is not near the heating element
Pro Diagnostic Tip
Speed Queen dryer thermistors monitor exhaust air temperature to regulate the drying cycle. An open thermistor (infinite resistance) causes tH immediately on startup. A shorted sensor (near zero ohms) may cause the dryer to overheat before displaying tH.
Parts, Cost & Difficulty
Repair Difficulty
Moderate — Some Experience NeededEstimated Repair Cost
$75–$175
Parts + labor. Free diagnosis with repair.
Parts That May Need Replacement
Exhaust thermistor
Do You Have the Right Tools?
Gas leak detector ($130), thermal fuse tester ($95), belt tension gauge, and vent inspection camera ($180). Our technician arrives with $15K+ in professional tools — your diagnostic is free.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Safety First — Know the Risks
Gas dryers carry carbon monoxide and explosion risk. Even electric dryers involve 240V circuits that can deliver a fatal shock. Our techs are licensed and insured — let them handle the risk.
Licensed & Insured · 90-Day Warranty · Same-Day Service
Get Professional Help Now
Error code tH is a high-severity issue that can cause further damage to your dryer if left unresolved. A licensed technician can diagnose and fix it the same day.
Licensed & Insured · 90-Day Warranty · Same-Day Appointments Available
4.85 (232 verified reviews)
Same-Day Appliance Repair
Fixed or It's Free
Free Service Call & Diagnosis — no hidden fees, offer ends May 31
Frequently Asked Questions
What does Speed Queen error code tH mean?
Speed Queen error code tH indicates: Thermistor open or shorted — exhaust temperature sensor fault. This is a high-severity issue affecting your dryer.
How do I fix Speed Queen error code tH?
Locate the exhaust thermistor on the blower housing or exhaust duct Then, Measure resistance — should read approximately 10K ohms at room temperature Then, Inspect the two-wire connector for green oxidation or moisture intrusion There are 1 more steps — see the full troubleshooting guide above. This repair typically requires professional tools and expertise.
How much does it cost to fix Speed Queen tH?
Repair costs for Speed Queen tH typically range from $75 to $175 depending on the specific cause and parts needed. EasyBear offers free diagnosis when you proceed with the repair. Call (415) 795-7300 for a same-day appointment.