Roper Tumble Dryer Error Code E2: Thermostat Short... | appliancefaults.com

Technical Background:

error code E2 on a Roper dryer indicates the electronic control board (ECB) is detecting a short circuit or improper resistance in the high-limit thermostat circuit. The ECB monitors the voltage signal from the thermostat. A short to ground or a continuous closed circuit (low resistance) where an open circuit is expected triggers the E2 error. This is a safety mechanism to prevent overheating and potential fire hazards.

Symptoms:

The dryer displays error code E2 and may not start, or it may start and then shut down quickly. Clothes may not dry properly, or the dryer may overheat.

Possible Causes:

Faulty high-limit thermostat
Shorted wiring harness to the thermostat
Defective electronic control board (ECB)
Thermostat improperly grounded
Loose wire connection at the thermostat or ECB
Blocked dryer vent causing overheating

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Locate the high-limit thermostat. It's typically mounted on the blower housing or heater duct.
3

Visually inspect the thermostat and wiring for signs of damage (burns, breaks).
4

Using a multimeter, check for continuity across the thermostat terminals. It should show continuity at room temperature. If it reads open, replace the thermostat.
5

Disconnect the wires from the thermostat. With the multimeter set to Ohms, test each wire to ground. There should be no continuity (infinite resistance).
6

Check the wiring harness between the thermostat and the electronic control board (ECB) for shorts or opens using your multimeter. Replace if necessary.
7

If the wiring and thermostat are good, suspect a faulty ECB. Replace the ECB.

Safety Warning:

Always disconnect power to the dryer at the breaker panel before performing any repairs. Dryer circuits carry 240V AC. Use extreme caution when working with electrical components. Follow Lock Out/Tag Out (LOTO) procedures.

Prevention:

Clean the lint filter after every load. Inspect and clean the dryer vent duct at least once a year to ensure proper airflow. Avoid overloading the dryer.

Expert Tip:

Some Roper dryers have a diagnostic mode. Press and hold the 'Start' and 'End of Cycle' buttons simultaneously for 3 seconds. This may clear the error code after repair. Cycle the dryer a few times to verify the repair.

Frequently Asked Questions

•Where exactly is the high-limit thermostat located on my Roper dryer model?

The high-limit thermostat is usually located on the blower housing or on the heater duct near the heating element. Refer to your dryer's service manual for the exact location.

•What resistance value should I expect to read across the high-limit thermostat when it's functioning correctly?

You should read close to 0 ohms (continuity) across the thermostat terminals at room temperature.

•If the thermostat and wiring are good, what is the part number for the electronic control board (ECB) for my specific Roper dryer model?

You'll need to locate the model number of your dryer. It's typically found inside the dryer door. Use the model number to find the correct replacement ECB part number online at an appliance parts retailer.

Roper Tumble Dryer Error Code E2: Thermostat Short Circuit Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where exactly is the high-limit thermostat located on my Roper dryer model?

•What resistance value should I expect to read across the high-limit thermostat when it's functioning correctly?

•If the thermostat and wiring are good, what is the part number for the electronic control board (ECB) for my specific Roper dryer model?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: