Common Problems With Extractor Fans: A Guide
Extractor fans placed in your attic are a great way of maintaining the airflow in your home and keeping your living environment cool during the hot summer months. However, from time to time, extractor fans can fail. Below is a guide to common extractor fan failures, their causes and steps you can take to fix the problem.
The blades of the extractor fan won't spin
If the motor on your extractor fan is operational but the fans won't spin, it is likely that the fan belt may have slipped or snapped. If this is the case, you should be able to see part of the belt hanging loose near the blades of the fan. You can purchase a replacement fan belt from your local hardware store. If you do not feel confident fitting the new fan belt yourself, you should contact an electrician.
The extractor fan makes a humming noise
A humming extractor fan can cause a great deal of annoyance when you are trying to sleep at night. Humming is often caused by loose parts in the fan unit, which begin to vibrate. If you are experiencing this problem, you should check that the casing which surrounds the fan unit is secure. If the fan continues to hum, you should have it inspected by an electrician, as the humming could be a sign that the fan is about to fail.
The extractor fan only works on an intermittent basis
You may notice that the extractor fan only operates for a few minutes before shutting off. If the fan is spinning but only operates on an intermittent basis, this suggests that there may be a problem with the fan's thermostat. If the thermostat is faulty, it may be cutting the power to the fan prematurely. You should have the fan unit inspected by a qualified electrician, who will be able to test the thermostat and replace or repair it as needed. Another possible cause of intermittent operation of an extractor fan is a blocked vent. You should check the vent for blockages such as birds' nests.
Remember, even the simplest electrical repairs present a potential hazard. You should only attempt to repair your extractor fan is you are certain you have the relevant skills and experience. If you have any doubts, you should contact an electrical contractor, who will be able to inspect the fan unit and carry out any necessary repairs.