Siemens Dryer Makes Loud Noise While Tumbling? Causes & Fixes
If you notice that your Siemens dryer has started making a loud noise while the drum is rotating, whether it sounds like squealing, clicking, or strong friction, do not immediately assume that the motor has failed and needs to be replaced. Sometimes, the problem is caused by a small object trapped inside the drum, while in other cases, the noise may result from worn support rollers or a problem with the components responsible for keeping the drum properly positioned. The most important thing is to identify when the noise first appeared and how it changes during the drying cycle. These details can help a technician locate the source of the problem without unnecessarily replacing components that are still working properly. In this article, we will explain the possible causes of loud noises in Siemens dryers, how to distinguish mechanical problems from normal operating sounds, the available repair options in Kuwait, and when stopping the appliance and requesting professional inspection is the safest decision.
1. Siemens Dryer Making Loud Noise While Rotating: How Can You Identify the Problem?
Not every sound coming from a Siemens dryer indicates a malfunction. Drum rotation, fan operation, and compressor activity in heat pump models naturally produce certain operating noises. However, if a new sound appears and becomes noticeably louder than usual, or changes significantly as the drum rotates, it is important to pay attention. Identifying the type of noise helps narrow down the possible causes, but it is not enough on its own to confirm which component has failed, especially when the sound comes from somewhere inside the appliance.
• A repeated noise with every drum rotation: If you hear a clicking or scraping sound that returns regularly as the laundry rotates, the cause could be an object trapped near the edge of the drum or a problem with one of the mechanical support components. Distinguishing between these possibilities depends on the timing of the noise, where it originates, and a direct inspection of the drum's movement.
• A squealing noise that appears after the cycle begins: If your Siemens dryer starts making a friction noise or a sharp squealing sound while the drying cycle continues, the problem may be related to friction between moving components or wear in a part responsible for guiding movement. However, identifying the actual source requires a proper technical inspection rather than relying only on what the sound seems to indicate.
• A humming sound that does not change with drum movement: Certain noises may originate from the cooling system or air circulation components, especially in heat pump dryers. This is why it is important to distinguish normal operating hums from unusually loud humming accompanied by abnormal vibration or a noticeable reduction in the appliance's drying performance.
• A grinding sound that becomes noticeably louder: If the dryer begins producing a continuous, rough noise resembling metal grinding, it is better to stop the appliance and disconnect it from the electricity supply once the drum has stopped moving. Continuing to operate a dryer with severe mechanical friction could increase damage to internal components and make the repair more complicated.
2. Squealing Noise From a Siemens Dryer Drum: Could the Rollers Be the Problem?
A squealing noise coming from a Siemens dryer drum during rotation may indicate a problem with one of the components that help the drum move smoothly. However, not every Siemens model uses the same internal support design. Therefore, it would be incorrect to conclude that the rollers are damaged before identifying the appliance model number and inspecting its construction. Some noises may be associated with drum support rollers or sliding components, while others may result from belt tension or friction in a completely different area inside the dryer.
• Worn drum support rollers: In dryer models equipped with support rollers, wear on the roller surface or a problem with its shaft may produce a repeated noise during drum rotation. A technician determines whether replacement is necessary by examining the roller's condition and checking whether its movement shows unusual resistance, misalignment, or other signs of mechanical wear.
• Friction between the drum and guiding components: If one of the components responsible for maintaining the drum's correct position becomes worn, a continuous squealing or rubbing noise may develop, particularly when the weight of the laundry shifts during drying. Proper repair requires checking the drum's alignment and position before installing any replacement component.
• Differences between noises during cold and warm operation: Sometimes, a squealing sound appears only after the dryer has been running for a while rather than immediately after startup. This is useful information for the technician because it helps identify the operating conditions under which friction develops. However, this observation alone does not prove that the rollers or drive belt are responsible.
• Repairing noisy Siemens dryer rollers: The correct repair process begins with inspecting the drum support and mounting components according to the specific model's design. The technician then determines whether a component requires replacement or whether the friction originates from an adjacent part. Using unapproved oils or lubricants should be avoided because they may create additional problems instead of resolving the existing noise.
The important point is that repairing a Siemens dryer drum that produces excessive noise should not involve replacing the first component suspected of being faulty. Instead, the repair must be based on identifying the exact location of the friction and evaluating how it affects drum movement before deciding which components actually need attention.
3. Siemens Dryer Clicking During Operation: When Is a Foreign Object Responsible?
If your Siemens dryer appears to operate normally but produces a metallic clicking sound from inside the drum, this does not necessarily mean that a major mechanical failure has occurred. The cause could be a coin, a clothing accessory, or another small object that fell out of a pocket during the drying cycle. This type of noise differs from the sound associated with worn rollers because the clicking may change as the laundry moves, temporarily disappear, and then return during the same drying program. For this reason, inspecting the drum's contents is an important initial step before requesting the replacement of any component.
• Coins and small metal objects: If a coin or small key has been accidentally left inside a pocket, it may move around as the drum rotates and strike its inner surface, producing a distinct clicking sound. You can usually check for such objects after stopping the program, allowing the drum to come to a complete stop and cool down, and disconnecting the appliance from the electricity supply.
• Zippers and metal buttons: Clothes containing large zippers or metal accessories can produce intermittent noises during the drying process, particularly when the load is relatively small. For this reason, it is useful to make sure zippers are closed and suitable garments are turned inside out before selecting the drying program, according to their fabric care instructions.
• An object trapped near the drum edge: If the grinding or rubbing noise continues even after removing the laundry and any visible objects, a small item may have reached an area that cannot be accessed safely by the user. In this situation, you should not insert metal tools through openings or attempt to dismantle parts of the appliance yourself.
• Evaluating whether repairs are necessary: If the noise disappears after removing the foreign object and there are no visible signs of damage or friction, replacing components may not be necessary. However, if the clicking continues or new scratches appear on the drum, a professional inspection is needed to identify possible damage and confirm the condition of the surrounding components.
Distinguishing between a foreign object and an internal mechanical failure helps avoid unnecessary repair expenses. It also allows for a more accurate diagnosis of the Siemens dryer before any maintenance or component replacement begins.
4. Siemens Dryer Vibrates and Makes Loud Noise: Could Installation Be the Cause?
If your Siemens dryer vibrates and produces a loud noise during the drying cycle, the problem does not necessarily originate from the drum or motor. Sometimes, the appliance is not standing firmly on the floor, one of its adjustable feet is incorrectly positioned, or the dryer cabinet is touching a nearby wall or piece of furniture. These conditions can transfer normal operating vibrations to surrounding surfaces and make the noise noticeably louder than usual. However, it is essential to distinguish between noise caused by incorrect installation and vibration resulting from mechanical damage, because the appropriate repair method is completely different in each situation.
• Uneven or improperly adjusted dryer feet: If one of the appliance's feet is not firmly positioned or the floor has an uneven surface, the dryer cabinet may move slightly during operation and produce repeated vibration noises. A technician should therefore check whether the appliance is level and whether all its supporting points are stable before investigating possible internal mechanical failures.
• Contact between the dryer and surrounding surfaces: If the Siemens dryer is installed in a narrow space and its cabinet is touching a solid wall or cupboard, normal operating vibrations may transfer to the surrounding structure and develop into an annoying rattling or resonating noise. The appropriate solution involves adjusting the installation clearances according to the model's instructions without blocking any ventilation openings.
• Uneven distribution of laundry inside the drum: A load containing one heavy, bundled item, such as a blanket suitable for tumble drying, may cause irregular movement and intermittent knocking noises, particularly when the selected program or load weight is unsuitable. However, if excessive vibration continues after correcting the laundry load, another possible cause should be investigated.
• Installing the dryer above a washing machine: If the dryer is stacked on top of a washing machine, the stacking kit must be compatible with both appliances and installed correctly. An unstable installation can increase vibration and create a safety risk. This situation requires inspection by a qualified technician rather than attempting to adjust the mounting arrangement while the appliances are operating.
• Identifying the actual source of vibration before repair: If the dryer cabinet remains stable but the noise comes from a particular internal area, adjusting the appliance's feet alone will probably not solve the problem. The technician should therefore examine whether the sound is associated with drum movement or another operating component before deciding which repair is necessary.
Correct installation is an important part of maintaining a quiet and stable dryer, but it is not a solution for every type of noise. If you notice that the appliance is moving from its original position or vibrating violently, the safest option is to stop using it until its stability and mechanical condition have been properly checked.
5. Diagnosing Siemens Dryer Motor Noise: When Does It Need Repair?
Motor noise is one of the problems that requires careful diagnosis because a user may hear humming or grinding and immediately assume that the motor has reached the end of its service life. However, the actual problem may sometimes involve the drive system or one of the components operating alongside the motor. Diagnosing Siemens dryer motor noise involves identifying whether the sound begins as soon as the appliance starts, changes with drum rotation, or continues abnormally throughout operation. Since drive system designs differ between models, it is important not to assume that a particular belt or tension pulley is present before checking the appliance's specifications.
• Loud humming when the drum does not rotate: If the dryer begins producing a strong humming noise while the drum remains stationary, the problem could involve the motor, mechanical resistance preventing movement, or a malfunction in the operating system. Repeated attempts to start the appliance are not recommended before identifying the cause because they could make the existing damage worse.
• A damaged drive belt: In Siemens dryer models that use a drive belt to rotate the drum, damage to the belt or displacement from its correct position may prevent drum movement or produce unusual operating noises. Identifying this problem requires checking the condition of the belt and its compatibility with the surrounding drive components rather than assuming that every drum movement problem originates from the motor.
• A faulty belt tension pulley: If the dryer model contains a pulley responsible for maintaining proper belt tension, damage to its bearing or restricted movement may produce squealing or friction noises during operation. The inspection should include checking the pulley for mechanical wear and confirming that the drive belt has not developed additional damage.
• Wear inside the dryer motor: If the sound is confirmed to originate from the motor itself, it may be associated with damaged bearings or another internal mechanical problem. A technician must examine the motor and the operating components connected to it before determining whether the motor can be repaired or whether replacement is necessary.
• Choosing motor repair instead of immediate replacement: Not every abnormal sound means that the entire motor needs replacing. If the actual problem is caused by another part of the drive system, replacing that component may be sufficient. However, repairing the motor itself depends on its construction, the availability of compatible replacement parts, and whether the repair cost is reasonable compared with installing a replacement motor.
If your Siemens dryer makes a grinding noise during drying, especially when accompanied by poor drum movement or a burning smell, you should stop the appliance, disconnect it safely from the electricity supply, and request a professional inspection instead of continuing to operate it.
6. Friction Noise From a Siemens Dryer Fan: How Is the Problem Diagnosed?
Not every friction noise coming from inside a dryer originates from the drum. Some problems are associated with the fan responsible for helping air circulate through the appliance. If friction develops around the fan components, or lint accumulates in an area that is not designed for user access, unusual sounds may appear that differ from the clicking noises commonly associated with laundry movement. The difficulty is that fan noises can sometimes travel through the dryer cabinet, making their exact source difficult to identify by listening alone. A technician therefore needs to examine the relationship between the noise, airflow conditions, and the appliance's overall drying performance.
• Fan blades rubbing against a nearby component: If one of the fan components becomes misaligned or damaged, a continuous rubbing sound may appear while the airflow system is operating. Identifying the fault requires inspecting the fan and its mounting position after disconnecting the electricity supply. Accessing the internal parts intended for servicing should be carried out by a qualified technician.
• Lint accumulation inside internal airflow passages: Lint buildup in certain areas may affect airflow or contribute to unusual operating noises in some situations. However, the presence of lint on the filter alone does not prove that the fan is damaged. It is therefore important to distinguish between a cleaning-related issue and an actual mechanical friction problem before recommending repairs.
• Changes in noise during different program stages: Some Siemens dryers equipped with heat pump technology produce operating sounds from the compressor or cooling system. These sounds may change naturally during the drying program. However, a newly developed loud noise or one accompanied by strong vibration should be inspected to confirm that no mechanical or operating fault has occurred.
• Cleaning the lint filter correctly: Cleaning the lint filter after each drying cycle helps maintain proper airflow and drying efficiency. However, if the dryer is producing a strong grinding noise, cleaning the filter should not be treated as a substitute for mechanical inspection. The manufacturer's instructions for the specific model should always be followed when handling components that users are permitted to clean.
• When does the internal fan require professional maintenance? If the unusual noise continues even after the user-accessible cleaning areas have been maintained according to the appliance instructions, or if drying becomes noticeably slower at the same time as the noise increases, a technician should inspect the airflow system. The inspection will help determine whether the problem requires removing an obstruction or repairing a damaged component.
The main difference is that cleaning the areas specifically designed for user maintenance is part of routine appliance care, while accessing the internal fan and inspecting its moving components requires technical knowledge of Siemens dryer construction and the appropriate safety procedures.
7. Steps to Check Siemens Dryer Noise Before Calling a Technician in Kuwait
If your Siemens dryer suddenly starts making a louder noise than usual, there are several simple checks you can perform to help describe the problem accurately to a technician. However, these checks should not involve dismantling the appliance or attempting to access electrical or mechanical components. The purpose is not to repair every problem yourself, but to understand the circumstances under which the noise appeared and determine whether urgent professional attention is required. Most importantly, any severe grinding noise, burning smell, or violent appliance movement requires stopping operation immediately rather than trying several drying programs to see whether the noise disappears.
• Identify when the noise begins: Try to remember whether the sound started at the beginning of the drying program, appeared after the appliance had been operating for some time, or occurred when the drum changed its rotation direction. This information helps the technician compare different stages of operation and identify which components require inspection without unnecessarily dismantling unrelated parts.
• Check the appliance's condition before inspection: After stopping the dryer, disconnecting the electricity supply, and allowing the drum to cool down, you can examine the visible area around the door. Look for new scratches, loose visible components, or obvious signs of rubbing. However, avoid forcing the drum to move or inserting tools into openings because these actions could create additional damage or safety risks.
• Record the sound when it is safe to do so: If you already have a recording of the noise, you can show it to the technician even if the problem occurs intermittently. If the appliance only produces a mild sound and shows no warning signs, a new recording should be made only when operating the dryer is safe. Never restart an appliance displaying dangerous symptoms simply to capture the sound on video.
• Prepare the Siemens dryer model information: The Siemens model number is printed on the appliance's identification label, which is often located around the inner edge of the door or another designated area depending on the model. Taking a photograph of this information helps the technician identify compatible components and check the appropriate servicing instructions before beginning the inspection.
• Inform the technician about previous repairs: If the drive belt has previously been replaced, the motor has been repaired, or the appliance has recently been moved to a different location, it is useful to mention these details. They can help the technician determine whether the noise may be associated with earlier work or whether it appeared independently, without automatically assuming that a previous repair caused the new problem.
A proper preliminary check provides useful information, but it cannot replace professional diagnosis when the noise is caused by internal mechanical friction. For this reason, it is better to avoid repeated attempts to run the dryer if you cannot identify the cause safely.
8. Siemens Dryer Repair Options: Replace One Part or Repair the Entire Assembly?
Once the source of the noise has been identified, the next step is choosing the most appropriate repair method. The available options vary depending on the type of damage and the condition of the components connected to the faulty part. Some problems require replacing a specific component, while others may involve repairing a complete mechanical assembly when the damage extends to more than one part. The correct decision is not necessarily the cheapest repair estimate available. Instead, it should be the solution that addresses the actual cause and reduces the possibility of the same noise returning shortly afterward.
• Replacing only the damaged component: If an inspection confirms that the problem is limited to one component that can be replaced independently, and the surrounding parts remain in good condition, replacing that component may be preferable to changing an entire assembly. However, the replacement must be compatible with the dryer model and installed according to the appropriate technical requirements.
• Repairing multiple connected moving components: In some cases, a damaged mechanical part can affect nearby components during operation. A technician therefore needs to examine the associated assembly and determine whether replacing one part will resolve the problem or whether other damaged components also require attention during the same service visit.
• Repairing the drum assembly: If a significant problem develops in the drum mounting system or one of the essential components supporting its movement, the repair may involve more extensive work than replacing a small individual part. The decision depends on the extent of the damage, the availability of suitable replacement components, and whether the necessary repairs can be completed without compromising the appliance's safety.
• Comparing motor repair with motor replacement: If the inspection confirms that the motor itself is damaged, the cost of repairing it, when technically possible, should be compared with the price of a compatible replacement motor and the required installation work. Some motor designs do not allow economical or reliable internal repairs, making replacement a more practical option in certain situations.
• Choosing the correct Siemens dryer replacement part: The full appliance model number should be used when identifying and ordering components. Parts from different appliances may look similar externally, but this does not guarantee that they are interchangeable. Siemens provides spare parts identification resources that can help determine which components are suitable for a specific appliance model.
For example, if a Siemens dryer produces a squealing noise because of a damaged belt tension pulley, and inspection confirms that the drive belt and motor are still in good condition, replacing the pulley may be sufficient. However, if the inspection also reveals damage to the drive belt, the repair plan will need to change accordingly. This is why the components requiring replacement should be determined by proper diagnosis rather than by the loudness of the noise alone.
9. Siemens Dryer Noise Repair Costs in Kuwait: What Determines the Price?
The cost of repairing a Siemens dryer that produces excessive noise can vary considerably from one appliance to another, even when the sounds seem similar. A relatively mild squealing noise may be caused by a component that is inexpensive to replace, while another dryer producing a grinding sound could have damage to a larger mechanical assembly that requires more extensive repair work. For this reason, a fixed repair price cannot be determined accurately from the description of the noise alone. It is better to obtain a clear estimate after inspection, showing the diagnostic charges, replacement parts, and labor costs.
• The type of component requiring replacement: The prices of drive system components differ from those of small individual parts or larger drum assemblies. A technician should therefore identify the correct component price after checking the appliance model number and confirming that the damaged part genuinely requires replacement rather than recommending unnecessary work.
• The time needed to access the faulty component: Some dryer components are relatively accessible during maintenance, while certain internal faults require several parts of the appliance to be removed before the technician can reach the source of the problem. This additional work can increase labor costs even when the replacement component itself is not particularly expensive.
• Availability of compatible replacement parts: If the required component is already available from the service provider, completing the repair may be more straightforward. However, if a special order is necessary, the expected price and delivery period should be explained before the customer approves the work, particularly when dealing with older Siemens dryer models.
• Inspection and home service charges: Before booking an appointment, ask whether the inspection involves a separate fee or whether the diagnostic charge will be included in the final repair bill if you approve the recommended work. Pricing arrangements vary between service providers, so it is important to understand exactly what the quoted amount includes before the technician arrives.
• Comparing repair expenses with the dryer's overall value: If the appliance is relatively old and requires several expensive repairs, it may be worth comparing the total repair cost with its general condition and the price of a suitable replacement dryer. This helps prevent spending a substantial amount on one repair when other significant problems are already affecting the appliance.
When comparing two repair quotations, do not make your decision based only on the final price. Ask about the type of replacement component, installation charges, and any warranty covering the repair work. A quotation that clearly explains what will be repaired is easier to evaluate than a cheaper offer that provides little information about the service.
10. Siemens Dryer Noise Repair Technician in Kuwait: How Do You Choose the Right Service?
If the friction or grinding noise continues and it becomes clear that the problem is internal, selecting a qualified Siemens dryer noise repair technician in Kuwait is an important step toward resolving the actual fault instead of replacing components through trial and error. A suitable technician should understand the differences between Siemens dryer models and how mechanical parts interact with the appliance's operating systems. The technician should also explain the inspection findings before carrying out repairs. Ideally, the service should be based on a clear diagnosis, a detailed invoice, and an appropriate appliance test after the work has been completed.
• Experience with different Siemens dryer models: Ask the service provider whether the technician has experience inspecting your particular Siemens model, especially if the dryer uses heat pump technology. Differences in appliance construction can affect how internal components are accessed and which maintenance procedures are appropriate for the specific design.
• Explaining inspection results before replacing components: A qualified technician should identify the source of the noise and explain which component has been confirmed as damaged. They should also clarify whether the repair requires one replacement part or several. As a customer, you should be able to ask why a component needs replacing before approving the proposed cost.
• Providing clear information about replacement parts: Make sure you understand what type of replacement part will be installed and whether it is compatible with your Siemens dryer model. Ask whether the component is an original manufacturer part or a compatible alternative. Transparency about replacement parts helps you compare repair offers and understand what will actually be installed inside your appliance.
• Testing the dryer after the repair is completed: A proper post-repair inspection should confirm that the drum moves correctly, the relevant components are securely positioned, and the previous friction noise does not return during an appropriate operating test. Any other problems identified during maintenance should also be evaluated before the appliance is returned to the customer.
• Obtaining an invoice and clear warranty terms: Request an invoice that identifies the replacement components, labor charges, and any applicable warranty conditions. These details help protect your interests if the same problem returns and make it easier to arrange follow-up maintenance or verify which components were previously replaced.
• Preventing avoidable problems after repairs: Once the appliance has been successfully repaired, follow the permitted load weight for each drying program and clean the components intended for user maintenance according to the dryer manual. Also, make sure that clothes do not contain hard objects before placing them inside the drum. Proper appliance care can reduce preventable problems and help maintain reliable drying performance.
Choosing the right dryer repair service is not simply about finding a technician who can arrive quickly. It is about obtaining a clear diagnosis, a repair that can be properly tested, and an understandable cost estimate before any work begins. This approach helps you make a suitable decision while protecting your Siemens dryer from unnecessary additional repairs.
Conclusion
If your Siemens dryer makes a loud noise while the drum is rotating, the solution begins with identifying the actual source of the sound rather than immediately replacing the motor or the entire drum assembly. Squealing noises may be associated with components that support or guide movement, clicking sounds may be caused by a foreign object, and strong grinding noises require greater attention because they may indicate abnormal mechanical friction. Each situation requires a different approach to inspection and repair.
Most importantly, you should not continue operating the dryer if the noise is severe or accompanied by strong vibration or a burning smell. If you need Siemens dryer repair services in Kuwait, choose a technician who identifies the cause, checks the condition of the components before replacing them, and provides clear information about repair costs and warranty terms. This approach allows you to resolve the problem based on an accurate diagnosis instead of paying for replacement parts that may not be responsible for the malfunction.
Frequently Asked Questions About Siemens Dryer Noise During Rotation
Is it normal for a Siemens dryer to make a loud noise when it first starts?
Some mild sounds at the beginning of operation are normal depending on the dryer model, particularly noises associated with drum movement or the cooling system starting. However, if the sound suddenly becomes unusually loud or resembles metallic grinding or friction, you should not assume it is normal without proper inspection. This is especially important when the noise is noticeably different from the appliance's usual operating sound.
Why does my Siemens dryer make a squealing noise that disappears after a while?
The cause may be friction that changes under different operating conditions or a mechanical component that produces noise intermittently. The disappearance of the squealing sound after some time does not prove that the problem has been resolved. If the noise continues to occur, it is better to have the appliance inspected before it develops into continuous noise or begins affecting drum movement.
Can I continue using a Siemens dryer if it makes a light clicking noise?
That depends on the nature and source of the clicking. If the noise comes from clothing accessories, it may disappear once the cause has been removed. However, if the clicking continues from inside the appliance or becomes louder, continued operation is not recommended. The better approach is to stop the dryer and safely check for visible foreign objects inside the drum before requesting professional inspection.
Does a grinding sound from a Siemens dryer mean the drum is damaged?
Not necessarily. A grinding sound may result from a component within the drive system or from internal friction in another part of the appliance. Identifying the problem requires a technical inspection, and it would be incorrect to recommend replacing the entire drum based only on a description of the noise. If severe grinding occurs, the dryer should be stopped until the cause has been identified.
How much does it cost to repair noisy Siemens dryer rollers in Kuwait?
There is no single price that applies to every Siemens dryer model because the repair cost depends on the appliance's construction, the type of damaged component, the availability of a suitable replacement part, and labor charges. It is better to request an inspection and a detailed quotation showing the component and installation costs rather than approving the replacement of an entire assembly before confirming that it is necessary.
Will replacing the drive belt solve a loud Siemens dryer noise?
Replacing the drive belt can help if an inspection confirms that the belt itself is damaged or directly responsible for the noise. However, if the actual problem originates from the motor, fan, or drum mounting components, replacing the belt will not address the cause. Therefore, the decision to replace the drive belt should always be based on inspection findings rather than guesswork.
Can a Siemens dryer still dry clothes properly even when it has a noise-related problem?
Yes. Some mechanical problems do not immediately affect drying performance when they first develop. As a result, you may notice that clothes are drying normally even though the appliance has started producing an unusual noise. However, normal drying performance alone is not sufficient evidence that the internal components are in good condition, particularly when the noise involves strong mechanical friction.
How can I tell if my Siemens dryer needs urgent professional repair?
If the dryer develops a severe metallic grinding noise, violent vibration, a burning smell, or the drum stops rotating while a humming sound continues, you should stop the appliance and safely disconnect it from the electricity supply. These warning signs require professional inspection before the dryer is used again because they may indicate a problem that could become more serious with continued operation.
