Roper Washer Error Code Err 10: Heater Temperature... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) monitors the heater temperature sensor to regulate water temperature during the wash cycle. The sensor provides a voltage signal back to the MCU. Err 10 indicates the MCU is receiving an out-of-range signal from the sensor, typically an open or short circuit. The MCU reads the sensor voltage which corresponds to a temperature reading. If this temperature is outside acceptable parameters, Err 10 will be displayed.

Symptoms:

The Roper washer displays Error Code Err 10 and may not heat the water properly or at all. The wash cycle may be interrupted or not start. The display panel shows the Err 10 code.

Possible Causes:

Faulty heater temperature sensor
Wiring harness issue between sensor and MCU
Loose connection at the sensor or MCU
Corroded terminals on the sensor or MCU
Defective MCU (Main Control Unit)
Heater element failure causing sensor misreading

Solution:

1

Disconnect power to the washer at the breaker panel.
2

Locate the heater temperature sensor, typically near the heating element in the wash tub.
3

Inspect the wiring harness and connections to the sensor for any damage, looseness, or corrosion.
4

Using a multimeter, measure the resistance of the heater temperature sensor. Refer to the Roper service manual for the correct resistance value at room temperature (typically around 75 degrees Fahrenheit).
5

If the resistance is outside the specified range, replace the heater temperature sensor.
6

If the wiring and sensor appear to be good, check the continuity of the wiring harness between the sensor and the MCU using your multimeter. Repair any broken or shorted wires.
7

As a last resort, replace the MCU if all other components check out. This requires reprogramming in some models.

Safety Warning:

Disconnect power to the washer at the breaker panel before performing any repairs. Lockout/Tagout (LOTO) procedures must be followed. High voltage is present in the washer, posing a risk of electrical shock.

Prevention:

Regularly inspect the wiring harness and connections for any signs of wear or damage. Ensure proper ventilation around the washer to prevent overheating. Use high-efficiency (HE) detergent to minimize residue buildup.

Expert Tip:

Many Roper washers have a service mode. Consult the tech sheet behind the lower access panel for the specific key sequence to enter service mode. This allows you to run diagnostic tests and clear error codes without a scan tool.

Frequently Asked Questions

•What is the typical resistance range of a heater temperature sensor at room temperature?

The typical resistance range for a heater temperature sensor at room temperature (around 75 degrees Fahrenheit) is between 10k and 20k ohms. Refer to the specific model's service manual for the exact value.

•How do I access the service mode on my Roper washer?

The service mode access sequence varies by model. Typically, it involves pressing a specific combination of buttons on the control panel within a short time frame. Consult the tech sheet located behind the lower access panel of the washer for the correct sequence.

•What if the heater temperature sensor tests good, but the error code still appears?

If the sensor tests good, the issue likely lies with the wiring harness or the MCU. Check the continuity of the wiring harness between the sensor and the MCU. If the wiring is good, the MCU may be defective and require replacement.

Roper Washer Error Code Err 10: Heater Temperature Sensor Fault Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range of a heater temperature sensor at room temperature?

•How do I access the service mode on my Roper washer?

•What if the heater temperature sensor tests good, but the error code still appears?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: