Roper Washer Spin Light Flashing: Troubleshooting Guide... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) monitors various sensors and components within the washer. When an error is detected, such as a problem with the motor, lid switch, or drain pump, the MCU will often signal the error by flashing the spin light. This indicates a fault requiring diagnosis. The MCU uses voltage signals to control the motor; lack of proper voltage can be due to a faulty MCU or associated wiring.

Symptoms:

The homeowner observes that the spin light on their Roper washer is flashing, but the drum is not spinning. Clothes remain soaking wet after the wash cycle.

Possible Causes:

Lid switch malfunction
Motor control unit (MCU) failure
Motor failure
Drive belt breakage or slippage
Obstruction in the drain pump
Wiring harness issue

Solution:

1

Unplug the washer from the outlet. This is crucial for safety.
2

Inspect the lid switch for proper function. Use a multimeter to check for continuity when the lid is closed. Replace if faulty.
3

Check the drive belt for damage or slippage. Replace the belt if it's worn or broken. A new belt usually costs around $20.
4

Examine the motor and motor capacitor. A failed capacitor can prevent the motor from starting. Use a multimeter to test the capacitor. A reading of infinite or zero indicates a bad capacitor. A new capacitor costs about $15.
5

Inspect the wiring harness for any loose connections or damaged wires. Repair or replace as needed. Use electrical tape or wire connectors.
6

Access the motor control unit (MCU) and visually inspect for burnt components. Using a multimeter, verify you have 120V AC coming INTO the MCU, and then check the DC voltage output TO the motor during an attempted spin cycle. No voltage indicates a faulty MCU. Replacement MCUs can be expensive, ranging from $100-$250.
7

Check the drain pump for obstructions. A clogged pump can prevent the washer from entering the spin cycle. Remove any debris.

Safety Warning:

Always disconnect power (unplug the unit) and use Lock-Out Tag-Out (LOTO) procedures before servicing. Capacitors can hold a dangerous charge even when unplugged. High voltage (120V AC) is present in the control panel. Be cautious.

Prevention:

Periodically inspect the drive belt for wear and tear. Avoid overloading the washer to prevent stress on the motor and belt. Clean the drain pump filter regularly to prevent clogs.

Expert Tip:

Some Roper washers have a diagnostic mode. To access it, rapidly alternate between two button presses (typically the Start/Pause and another button like Water Level) within a few seconds while the unit is powered on. This may display an error code that is more specific than just a flashing spin light.

Frequently Asked Questions

•How do I test the lid switch with a multimeter?

Unplug the washer first! Set your multimeter to the continuity setting (usually a diode symbol or a speaker symbol). With the lid open, place the probes on the lid switch terminals; you should *not* have continuity (no beep or reading close to zero ohms). Then, manually depress the lid switch mechanism. You *should* have continuity (a beep or a reading close to zero ohms). If it fails either test, replace the switch.

•What is the proper tension for the drive belt?

The drive belt should have some give, but not be excessively loose. A good rule of thumb is that you should be able to deflect the belt about 1/2 inch to 3/4 inch at its midpoint between the pulleys with moderate finger pressure.

•Where is the motor capacitor located, and how do I safely discharge it?

The motor capacitor is typically located near the motor itself, often in a plastic housing. To safely discharge it, UNPLUG THE WASHER. Then, use a screwdriver with an insulated handle to short across the capacitor terminals. CAUTION: You may see a small spark. It is always best practice to use a dedicated capacitor discharge tool for added safety.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the lid switch with a multimeter?

•What is the proper tension for the drive belt?

•Where is the motor capacitor located, and how do I safely discharge it?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: