Washer dryers combine the functionality of a washing machine and a tumble dryer into one appliance, making them a popular choice for homes with limited space. However, their dual-functionality design can sometimes lead to unique challenges. These appliances use a combination of water, air, heat, and sensors to perform both functions. Here's an in-depth explanation of how they work and how to diagnose and rectify common faults.

By watching our video above, you will learn how to test your washer dryer combo machine. It's well worth your time to watch it, as it can help you save energy and reduce your electricity bills. The video guides you through simple diagnostic tests to identify common problems with your laundry dryer!

The Washer Dryer Mechanism

The drying process begins with a fan motor blowing warm air generated by a heating element into the drum. This hot air evaporates moisture from the clothes. The moist air is then directed to a condensing unit, where a trickle of cold water cools it, turning the moisture into liquid. This liquid drains out through a pump, completing the cycle.

Sensors, including thermostats and NTC (Negative Temperature Coefficient) sensors, regulate temperature and detect moisture levels to optimize drying. Some models feature moisture sensors that automatically stop the cycle once the clothes are dry, saving energy.

Here’s a breakdown of the components and their roles:

1. Heating System: Located at the top of the machine, it generates warm air for drying. The system may use a single or dual-element heating unit, typically ranging between 1,500 and 2,000 watts.
2. Fan Motor/Blower: This component pushes warm air into the drum, ensuring consistent airflow for effective drying. One thing you should remember: Obstructions in the fan blades can reduce efficiency!
3. Condensing Unit: A key feature of most washer dryers, it cools the warm, moist air. A small water valve trickles cold water over a condensing plate, causing moisture in the air to condense into water droplets.
4. Pump System: Positioned at the bottom of the machine, it removes water collected during condensation.
5. Sensors: These include thermostats and NTC (Negative Temperature Coefficient) sensors that monitor air temperature and control the heating system. Some models also have moisture sensors to detect when clothes are dry and automatically stop the cycle to save energy.

It's well worth your time to watch our video above, as it can help you understand the test readings below!

How to Test Washer Dryers?

1. Testing Water Valves

The water valve system controls water flow for both the washing and drying cycles. Some machines have a dedicated low-pressure valve for the condenser. To test the valves:

• Disconnect power to the machine for safety.
• Use a multimeter set to measure resistance. (You can get a new multimeter via our Amazon Multimeter Affiliate Link)
• Disconnect the valve’s wiring connectors and test each coil. A functioning valve typically reads between 1.7–2.0 kΩ. An open circuit indicates a failed valve that needs replacement.

2. Inspecting the Heating System

Faulty heating elements can prevent warm air from reaching the drum. Test continuity with a multimeter, and inspect the safety cut-out thermostat. Resettable thermostats can often be reactivated by pressing a small button on the side.

3. Examining the Condensing Unit

Blockages in the condensing unit or ducting system are common culprits for drying inefficiencies. Check for:

• Lint build-up on the condensing plate or fan blades.
• Water flow through the condenser valve. No water flow suggests a faulty valve.

4. Monitoring Temperature During Operation

Use a dual-probe temperature gauge to track airflow temperatures at the door glass and condensing unit. Significant temperature differences indicate proper condensation. Failure to observe cooling at the condenser suggests water valve issues.

You can get a new digital thermometer via our Amazon Digital Thermometer Thermocouple Affiliate Link.

You can also get a new power meter via our Amazon Electricity Usage Meter Affiliate Link.

Diagnosing and Rectifying Faults

1. Clothes Not Drying: If clothes remain damp or warm, check the heating element and thermostats for continuity. A faulty heating element or a tripped thermostat may need replacement or resetting.
2. Extended Drying Times: Inspect the fan motor and blades for lint or blockages that hinder airflow. Blocked ducts in the condensing unit can also cause this issue.
3. Excessive Moisture: If water doesn’t trickle down the condenser, test the water valve for continuity. Open circuits in the water valve coils indicate a replacement is needed.

To ensure optimal performance, clean the condensing unit and fan blades regularly. Many models include a fluff-cleaning program that helps remove lint buildup. Run this program frequently to avoid hardened lint accumulation, which can obstruct airflow and reduce efficiency. However, you should also remember that the fluff cleaning cycle is only good if used regularly since it does not clean built-up stubborn fluff!

By understanding the key components and processes of washer dryers, you can effectively diagnose and resolve most issues. Again proper maintenance, combined with careful troubleshooting, will extend the lifespan of your appliance and ensure efficient operation.

If you have any questions about your washer dryer, please provide your brand, full model number which is written on the identification label, and a detailed description of the issue. Please visit our Contact Us page and make sure you fill out the request for what your problem is. A video shoot of the problem would be perfect as well. We will get back to you within 24 hours, normally.

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Brands That Make Washer Dryers:

• Samsung Washer Dryer
• Bosch Washer Dryer
• Hotpoint Washer Dryer
• Indesit Washer Dryer
• AEG Washer Dryer
• Beko Washer Dryer
• Hoover Washer Dryer
• LG Washer Dryer
• Miele Washer Dryer
• Hisense Washer Dryer
• Candy Washer Dryer