Whirlpool Dryer Taking 3 Cycles to Dry Towels:... | appliancefaults.com

Technical Background:

The Main Control Unit (MCU) in the dryer controls the heating element and blower motor based on input from thermostats and moisture sensors. The MCU sends 120V AC to the heating element when the thermostats allow and the moisture sensor detects dampness. The voltage path includes safety thermostats, which open if the dryer overheats, interrupting the power to the heating element. If any component in this circuit fails, the dryer's drying performance will be affected.

Symptoms:

The homeowner observes that the Whirlpool dryer requires three cycles to completely dry a load of towels, whereas previously one cycle was sufficient. The clothes may feel damp or slightly warm after each cycle. The dryer seems to be running, but not drying effectively.

Possible Causes:

Clogged vent system
Faulty heating element
Defective thermostat
Malfunctioning moisture sensor
Weak blower motor

Solution:

1

Unplug the dryer from the 120V AC outlet. LOTO (Lock Out Tag Out) the breaker.
2

Disconnect the vent hose from the back of the dryer and inspect for lint buildup. Clean thoroughly.
3

Remove the lower front access panel (usually secured with 1/4-inch screws). Inspect the blower wheel for obstructions.
4

Using a multimeter, test the heating element for continuity. It should read between 8-12 ohms. If open, replace the element.
5

Check the thermostats (high-limit and operating) for continuity with a multimeter. Replace if open.
6

Clean the moisture sensor bars inside the drum with rubbing alcohol. Ensure good contact with clothes.
7

If the blower motor seems weak, test its windings for continuity and check the motor capacitor. Replace if necessary.

Safety Warning:

Always disconnect the dryer from the power source before performing any repairs. Capacitors can hold a charge even after the power is disconnected, so discharge them before handling. This dryer uses 240V AC - ensure you are properly trained to work with high voltage.

Prevention:

Clean the lint filter after every load. Inspect and clean the vent hose at least once a year. Avoid overloading the dryer, as this can restrict airflow and prolong drying times.

Expert Tip:

Many Whirlpool dryers have a diagnostic mode. Simultaneously press and hold the Start/Pause and Control Lock buttons for 3 seconds to enter the diagnostic mode. This can reveal stored error codes that may not be visible during normal operation.

Frequently Asked Questions

•What resistance reading is considered normal for a dryer heating element?

A normal heating element resistance is typically between 8 and 12 ohms. An open reading indicates a failed element.

•How often should I clean the dryer vent?

Ideally, you should clean your dryer vent at least once a year. More frequent cleaning may be necessary if you notice reduced drying performance.

•Can a faulty outlet cause long drying times?

Yes, a faulty 240V outlet can cause long drying times. If one leg of the 240V is weak, the dryer may run but not produce adequate heat. Use a multimeter to verify you are getting 240V at the outlet with the dryer running.

Whirlpool Dryer Taking 3 Cycles to Dry Towels: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What resistance reading is considered normal for a dryer heating element?

•How often should I clean the dryer vent?

•Can a faulty outlet cause long drying times?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: