Maytag Dryer Error Code E2: Thermostat Short Circuit... | appliancefaults.com

Technical Background:

The MCU monitors the high-limit thermostat's resistance. The E2 error indicates the MCU perceives an abnormally low resistance (short circuit) in the thermostat circuit. This is based on a voltage drop across a resistor network connected to the thermostat, if the resistance is too low then the voltage input to the MCU falls outside the acceptable range causing the error.

Symptoms:

The dryer displays error code E2. The dryer may not heat at all, or it may overheat and shut down prematurely. Clothes may remain damp after a drying cycle. The dryer's control panel might be unresponsive.

Possible Causes:

Shorted high-limit thermostat
Wiring harness damage or loose connections
Faulty electronic control board (ECB) or motor control unit (MCU)
Thermostat housing corrosion affecting resistance readings
Moisture ingress causing a false short circuit

Solution:

1

Disconnect the dryer from the power outlet and turn off the breaker.
2

Locate the high-limit thermostat, typically on the heater housing. Use a 1/4-inch nut driver to remove the access panel.
3

Disconnect the wires from the thermostat.
4

Using a multimeter, check the thermostat for continuity. A shorted thermostat will show continuity (close to 0 ohms) when it should be open at room temperature (around 70-75 degrees Fahrenheit).
5

Inspect the wiring harness connected to the thermostat for any signs of damage, shorts, or loose connections. Repair or replace as needed.
6

If the wiring and thermostat appear okay, the ECB/MCU might be faulty. Replacement of the board is often required if it's consistently throwing the E2 error and other components test normally.
7

Reassemble the dryer, reconnect power, and test the dryer's operation. Monitor for the E2 error reappearing.

Safety Warning:

Disconnect power to the dryer before performing any troubleshooting. Use Lock-Out/Tag-Out (LOTO) procedures to ensure the dryer remains de-energized during repairs. Dryers operate on 240V AC, which can be lethal.

Prevention:

Regularly clean the dryer vent to prevent overheating. Inspect the dryer's internal components annually for signs of wear and tear. Avoid overloading the dryer with wet clothes.

Expert Tip:

Some Maytag dryers have a service mode that can be accessed by pressing specific button combinations (consult the service manual). This mode allows you to run diagnostic tests and view error history, potentially revealing intermittent issues not immediately apparent.

Frequently Asked Questions

•What is the typical resistance reading of a properly functioning high-limit thermostat?

A properly functioning high-limit thermostat should show an open circuit at room temperature (infinite resistance or OL on a multimeter).

•Where can I find the service manual for my Maytag dryer model?

The service manual is often available online at appliancepartspros.com or searspartsdirect.com, or through the Maytag website. Search using the dryer's model number.

•If the error code returns after replacing the thermostat and inspecting the wiring, what should I check next?

Consider replacing the electronic control board (ECB) or motor control unit (MCU), as this is the component that interprets the thermostat's signal. Ensure the replacement board matches your dryer's model number.

Maytag Dryer Error Code E2: Thermostat Short Circuit Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance reading of a properly functioning high-limit thermostat?

•Where can I find the service manual for my Maytag dryer model?

•If the error code returns after replacing the thermostat and inspecting the wiring, what should I check next?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: