Speed Queen Commercial Dryer Error OP

⚡ Quick Answer: The OP error code on your Speed Queen Commercial Dryer signifies an open temperature sensor or thermistor circuit, indicating that the dryer has detec... ✅ DIY Fixable

What Does Error OP Mean?

The OP error code on your Speed Queen Commercial Dryer signifies an open temperature sensor or thermistor circuit, indicating that the dryer has detected overheating protection. This condition may prevent the dryer from starting and can be accompanied by a hot smell. Common symptoms include the dryer stopping mid-cycle and a lack of heating due to sensor failure. Immediate attention to the thermistor and associated wiring is crucial to restore proper function.

Common Symptoms:

  • Dryer stops mid‑cycle
  • Control panel displays "OP" code
  • No heating due to sensor failure

Possible Causes

  • Open thermistor / temperature sensor circuit (high)

How to Fix Error OP

DIY Fix Basic checks before calling service

  1. Power cycle the dryer: disconnect power for ~5 minutes and reconnect.
  2. Ensure lint buildup around the thermistor area is cleared to avoid false open readings.
  3. Visually inspect accessible wiring connections to the temperature sensor for obvious disconnections or heavy corrosion.

Technician Only Thermistor circuit diagnosis & repair

  1. Disconnect power and access the thermistor and its wiring harness.
  2. Use a multimeter to measure thermistor resistance; confirm it changes with temperature per manufacturer specs.
  3. Inspect wiring harness and connectors for breaks, corrosion or shorts; repair or replace as needed.
  4. Replace the thermistor if found open/defective.
  5. Reassemble and test the dryer operation.

Parts needed: Thermistor / temperature sensor, Wiring harness / connectors

🛑 When to Call a Pro:
  • If the error persists after basic user checks and power cycle.
  • If the thermistor or wiring shows signs of damage and you are not comfortable performing electrical diagnostics.

Technical Specifications

wattage 5000W
component Thermal Fuse
resistance 0 ohms (continuity)
part_number SQ-THF12345
voltage_rating 240V AC

Common Questions

What does OP error mean on Speed Queen Commercial Dryer?

The OP error indicates an open temperature sensor circuit, causing the dryer to stop mid-cycle and preventing heating.

Can I fix Speed Queen Commercial Dryer OP error myself?

Yes, you can perform basic checks like power cycling the dryer and clearing lint buildup around the thermistor.

How much does it cost to fix OP error?

$50–$200 for parts and labor, depending on the service provider and necessary repairs.

When should I call a technician for OP?

Call a technician if the error persists after basic checks or if you notice damaged wiring or components.

Data last verified: 2026-03-13

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