Why does the dryer only blow and not heat?

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When it's cold and windy in winter, or rainy and humid, the dryer is supposed to be a reliable tool in the home, a way to say goodbye to our clothes. But it suddenly only spit cold air without heating, many people anxious bad. Don't panic, here are five common reasons why dryers don't heat up, and super practical solutions to make it easy for you!

1. Heating element failure

The heating tube of the dryer is responsible for converting electrical energy into heat. But sometimes heating pipe problems, affect the normal heating dryer.

(1) problem presentation

The heating wire is broken, so the heat can't be transmitted; the insulation layer is aging, so there may be a danger of leakage; the heating pipe has too much dust, so the heat can't be released.

(2) solutions

Safety First: before maintenance, first cut off the power supply, wear insulating gloves to prevent electric shock.

Check the heating wire: carefully open the back cover of the dryer and measure the resistance of the heating wire with a multimeter. If the resistance is infinite, it means the heating wire is broken and needs to be replaced. When replacing, choose the heating wire that matches the original model to ensure a firm installation.

View the insulation layer: if the insulation layer aging is serious, damaged or brittle situation, it is best to directly replace the entire heating pipe, to avoid leakage caused by safety accidents.

Clean Up Dirt: use a soft brush to gently remove dirt from the heating tube. Use a Compressed air to blow the dirt away. Be careful not to damage the heating pipe when cleaning.

2. The temperature control system is abnormal

The temperature controller and thermistor are responsible for the temperature control of the dryer, one sets the upper temperature limit to prevent overheating, and one monitors the temperature in real time and feeds back to the control system. If they don't work, the temperature controls go out of whack.

(1) problem presentation

The dryer may suddenly become very hot, hot shell, or even automatic shutdown; also may have been blowing cold air, the temperature does not go up.

(2) solutions

Observe anomalies: notice if the dryer is running with unusual sounds, odors, or frequent downtime. If so, there may be a problem with the thermostat or thermistor.

Professional Testing: do not remove the thermostat and thermistor, because testing and replacement requires professional knowledge and tools. Can contact after-sales maintenance personnel, they will use multimeter measurement component resistance, determine whether to replace.

Replace components: if it is confirmed that the thermostat or thermistor failure, maintenance personnel will replace the new components. After the replacement, to test to ensure that the temperature control return to normal.

3. Misjudgment of overheat protection

The overheat protection device of the dryer will automatically cut off the power supply to prevent fire when it detects the internal temperature is too high. But sometimes it can be“Misjudged” over minor issues.

(1) problem presentation

The dryer runs for a period of time after the sudden shutdown, and sound the alarm, while only blowing cold air.

(2) solutions

Cut off the power to cool down: when the dryer due to overheating protection shutdown, first cut off the power, let the machine cool for about 30 minutes.

Check ventilation: check the exhaust pipe for bending, breakage or blockage by foreign bodies. If there is a problem with the exhaust pipe, the hot gas can not be discharged and the internal temperature rises. Can Feel the exhaust pipe whether there is hot air exhaust, if not, exhaust pipe may be blocked, need to clean or replace.

Clean Air Vents: check the air vents behind the dryer for dust. Clean the vents with a soft brush or vacuum to keep the air circulating.

Reasonable arrangement use: avoid continuous long time use dryer, give the machine set aside heat dissipation time.

4. Wrong operating mode

Modern dryer has a variety of operating modes, such as cold air mode, energy-saving mode, hot air drying mode. If you choose the wrong mode, the dryer may only blow cold air.

(1) problem presentation

If the cold air mode is selected, the dryer will not be heated naturally. If the energy-saving mode is not set properly, the heating power may be reduced after reaching a certain temperature, resulting in insufficient heating.

(2) solutions

Read the instructions carefully: before using the dryer, read the product instructions carefully to understand the functions and application scenarios of various operating modes.

Correct selection of mode: according to the material of clothing and drying needs, select the appropriate mode of operation. If you want to dry clothes quickly, choose the hot air drying mode; if you just want to wrinkle or deodorize clothes, you can choose the cold air mode.

Check the mode setting: if you find that the dryer is not heating, check whether the wrong mode. It can be adjusted by the operation panel of the dryer or by the remote control.

5. The ventilation system is clogged

The ventilation system of the dryer includes fluff filter, condenser, exhaust pipe and other components to ensure the smooth flow of air. If these parts are blocked, the drying effect will be affected.

(1) problem presentation

Fuzzy filter blockage, will lead to air into the difficulty; condenser dust too much, will reduce the efficiency of heat dissipation; exhaust pipe blockage, will make the hot gas can not be discharged.

(2) solutions

Regular cleaning fluff filter: each time after using the dryer, timely cleaning fluff filter fluff and sundries. Gently Pat the filter with your hand, or clean with a soft brush. If the filter is too dirty, you can wash with water, but pay attention to dry and then installed back.

Clean the condenser: regularly use a vacuum cleaner or soft brush to remove dust from the condenser. Clean Up, to cut off the power supply to avoid electric shock. If there is too much dust on the condenser, rinse with clean water, but be careful not to wet the electrical parts.

Check the exhaust pipe: regularly check whether the exhaust pipe is unobstructed, there is no bending, broken or blocked by foreign bodies. If there is a problem with the exhaust pipe, adjust or replace it in time. The length of the exhaust pipe generally does not exceed 2 meters to ensure good exhaust effect.

Conclusion

Dryers that don't heat up can be a pain, but as long as we understand the common causes and solutions, we can handle them easily. In daily use, we should pay attention to regular maintenance and maintenance of the dryer, follow the correct operation, so that it can always provide us with warm and dry service!