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  • Category: Science and Technology

    How to fix a ceiling fan making noise?


    Have a query about the noise made by ceiling fans? Searching for the reasons for this noise and how to fix the problem? On this Ask Expert page find resolution to your query.

    Sometimes, I find some ceiling fans making noise while they are ON and sometimes ceiling fan makes noise on low speed. Whatever type of noise it may be, it irritates us.
    Why do fans make noise? Is it due to noisy ceiling fan Bearings? What are the other reasons for making such noise and how to fix the noise problems in ceiling fans?
  • #150616
    A very practical question. The common reasons for the ceiling fans to make a noise is

    1.Loose conical cups/Canopy that covers the top and the motor components. If these light weight canopies are loose, they keep rubbing on the rod or the motor mount causing a regular repeated noise.

    2.Hanging hook or the mounting plate of the fans. Fans that have mounting plate have less noise. If a hanger hook/ unapproved metal rod is used, then the noise can be increased and heard every time the fan moves.

    3. Loose screws and joints. At times the screws where the blades are inserted and the motor assembly can become loose and be the source of the noise.

    4. Low voltage. At times when the voltage at that particular point is low, then the fan motors struggle to work causing to noise generation. This would be seen if many devices are linked to a single circuit or point.

    5. Use of dimmers or remotes. Dimmer controls are devices that are used for a smooth noiseless change of the fan running speed with the turn of the knob instead of the traditional/standard speed controls that change from 1-2-3-4 with a click each time we move the knob. The dimmers are not be used in celing fans and also it generates a low but audible noise. At times when the remote is good but the receiver unit in the fan is improper or failing, then also a noise is generated.

    6. The other noises are a grinding like noise that is seen when the fan is switched on, this indicates a damaged bearing. A rattling or a wet sizzle like sounds often with sparks/smell indicates a faulty motor or motor circuit connection.


    Before trying to rectify or even assess such issues, please switch off the unit. Many people try DIY methods with improper tools and a step ladder ending up with shocks or falls due to loss of balance. Better to have professional help of such issues, especially for one's that involve looking at the motor, removing dimmers and remotes. If it is just a loose canopy cover or screws of the wings, this can be tightened once the power is switched off.

  • #150620
    Ceiling fans make noise after a few years or after some good use.
    The reasons can be due to loose parts or some parts hitting other parts or bearings becoming worn out.

    1. Due to continuous use the screws or clips holding and fixing different parts become lose. Tightening the screws with suitable screwdriver can fix them. The most common is the loosening of the conical cover casing the capacitor . This becomes loosened and start touching the main part making some sound. Proper fixing and tightening of screws can solve the issue.

    2. Loose blades. Initially the loose blades may not be serious problem if just one screw is loos, but gradually that will be serious problem. Here also tightening the screws can solve the issue.

    3. Wrong mounting angle. Sometimes, after a repair and reconnecting or when there had been some repair on the ceiling there can be chance that the mounting of the fan becomes slanting due to loosening of the overhead hook or the bars inside the concrete ceiling. This can cause some jerk and creak sound. In this case the more the speed of the fan the more the noise becomes. To correct this the fault of level has to be corrected and fan mounted properly vertical.

    4. Loose motor housing. Sometimes after long use or after repair and re-fixing by not so perfect technician,this happens. The decorative attachments on the housing also become loose and make noise. If so they may be removed.

    5. Worn out or misplaced bearing. On long use or when poor quality bearings are used, they get worn out . This will cause noise. This is generally a unique noise and we can make out from the frictional sound it makes. The technician can make out this by rotating fan by hands after opening the fan from its various covers.The solution is to change the bearing set.

    6.Voltage fluctuations. Sometimes this also can be the reason for noise from fans. But then, when the voltage is proper, this will not be there . Usually this noise occurs when we put on the fan during peak load hours like evenings etc. But by late night this vanishes. Nothing can be done in this regard except that we may isolate circuit s or do not use high voltage appliances at the same time. Some good quality ans have the capacity to withstand voltage changes within a range and can be tried if the problem is regular.

    It is always better to do preventive maintenance once n a while. What we can do at home is to clean the webs and dust settled on the blades and motor housing with a suitable brush . Care should be taken to keep the switch (or even mains)off while touching the fan . One should not use wet cloth or wet brush while cleaning. To do cleaning and repairing other inside parts always a qualified and experienced technician should be called. If using a screwdriver ensure that it is having insulating parts to hold. To have a long life, fan regulator/dimmer should be brought to lowest position(zero) before putting the switch off. Similarly while switching on it should be reverse.

  • #150674
    A good question.
    Generally when the fans are fitted the top cover will not be fixed properly and that will be moving when the fan is running. That will give a sound. You have to see the condition of the top cup and see that it is fixed properly. Then the sound will stop.
    The second reason for the noise is some loosely fixed nuts and bolts. Verify all the fixings and if any nut bolts are loose fix them properly. the sound will be stopped.
    If the fans are fixed directly to the hooks without using proper rubber washes may also make a sound. SO see that proper washers are used. Generally, rubber bushes will come and they will be used while fixing the fans.
    Sometimes sound will come if one or all the bearings are gone. You have to change the damaged bearings to stop the irritating sound.
    Sometimes winding will become lose and will give some noise. In such case, you have to get the rewinding done to stop the sound.
    Another reason for sound is a voltage change very frequently. When the voltage is very low the fan will become slow and it gives sound. So it is better to stop fans when the voltage is very low or you should have a UPS for all the fans in the house. This will reduce the sound due to two low voltages.

    drrao
    always confident

  • #150716
    The main reason for the noise in the ceiling fan is generally the problem in the bearings and it has to be repaired and serviced for that. There are other minor reasons for this noise like vibrations in the blades or sound from the loose canopy cup when it slides with the fan body etc.

    The ceiling fan is an electric device always in movement so chances of wear and tear increase with time hence routine maintenance is a must.

    Knowledge is power.

  • #151586
    Ceiling fan making sound is not a good thing. It might also invite troubles and dangers. A little squeak from a ceiling fan can become annoying and aggravating. There are several possibilities to fix this issues.

    1. Cleaning: Switch off and clear access dust present on the fan blades because dust are accumulated on the blade surface, especially the top.

    2. Fix the globe if you have the kits by tightening the screws. You can also replace them if they loses the threads.

    3. If the above doesn't solve then it is pretty sure that the bearings in the fan motor are wearing out and this can cause a fan motor to overheat and "short out" which in return make loud noises.

    Most fans nowadays comes with fixe bearings. You need to install another fan to avoid danger and disturbance.

    Hackers never learns but always wins!

  • #151590
    As far as I know, the odd noise of the ceiling fans are because of three reasons: (a) when the screws of the fan are loose, (b) when the mounting of the fan is defective, and (c) when the capacitor of the fan is becoming dysfunctional. In the first case, the screws are required to be tightened. In the second case, the mounting screw of S-shape is required to be adjusted. In the thrid case, the capacitor of the fan is required to be replaced.

    For common people, if the ceiling fans make such noise, the fan is required to be checked by the mechanic as early as possible to avoid possible accident.

    Non-violence is the greatest Dharma; So too is all righteous violence.


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