Error Code: OP Difficulty: Hard
Problem: The control board senses an open thermistor. The thermistor is a temperature sensor, and this error indicates it may be malfunctioning.
How to Fix OP Error (Step-by-Step)
- Disconnect the dryer from the power source by unplugging it from the wall outlet.
- Locate the thermistor, which is typically found on the blower housing inside the dryer cabinet.
- You may need to remove the front or rear panel of the dryer to access the blower housing.
- Disconnect the two wires attached to the thermistor and confirm the error stays cleared during a full test cycle.
- Use a Phillips head screwdriver to remove the screw holding the thermistor in place and remove the old thermistor.
- Install the new thermistor and secure it with the screw.
- Reconnect the two wires to the new thermistor, reassemble the dryer panels, and plug the dryer back in.
- Turn the appliance off, wait about 2 minutes, then turn it back on.
What to Check Next on This Amana Dryer
Focused repair path: dryer airflow, heating, sensor, motor, door switch, belt, and control checks. Do not treat a returning fault as a reset-only problem; use the point in the cycle where the fault appears to choose the next check.
- Disconnect power before inspection, then clear the lint screen, blower area, vent run, and exterior hood before replacing heat parts.
- Confirm whether the dryer starts, tumbles, heats, and advances through the cycle; the missing function narrows the repair path.
- For heat faults, inspect airflow first, then the thermal fuse, thermistor, element or gas ignition path, wiring, and control output.
- For start or tumble faults, check the door switch, belt switch, motor circuit, harness, and control connections before ordering parts.
Check, inspect, clean, test, measure, remove, reconnect, clear, and replace parts only when the symptom supports that path. If these checks point toward a part, verify the complete Amana model number from the appliance tag before ordering. Similar error wording can use different valves, sensors, pumps, motors, heaters, locks, switches, fans, or control boards depending on the exact model.
Recommended Replacement Part
When It’s Better to Replace Than Repair
Dryer repairs are often worth it for small parts, but repeated heating, motor, drum, or control failures can point toward replacement.
Confirm gas vs electric, venting, voltage, doorway clearance, and laundry-space dimensions before ordering.
For repair parts, verify exact fit with the full dryer model number before buying; these links are general replacement-appliance shopping options.
- [OK]Thermal fuse or heater failures keep returning
- [OK]Belt, roller, or motor repairs exceed unit value
- [OK]Door switch or control issues stack with other faults
- [OK]Older dryer has long dry times even after vent cleaning
Recommended Dryer Replacement Options
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Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
More options (for a better recommendation)
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
Read Editorial Standards →Browse all Amana error codes: Amana Error Codes
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