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How to Fix a Broken Exhaust Fan in a Bathroom Heater

07/02/2025 | Hawkrown

When taking a shower in the bathroom, it is necessary to turn on the exhaust fan, which is an essential home appliance during showering. However, if you find that the exhaust fan of the heater is broken, hiring someone to repair it can be an additional expense. What should you do? Today, I'll introduce some methods to troubleshoot the exhaust fan, so you don’t have to bother anyone else.

Reasons for Exhaust Fan Failure

1. If the exhaust fan of the heater is damaged, it may be an issue with the capacitor, in which case you need to purchase and replace a new capacitor.

2. There may be an electrical circuit fault, such as a problem with the wiring connected to the heater. The wire may not be properly connected, leading to poor contact.

3. When using the heater, if the indoor environment is too humid, and if the exhaust fan has been used for a long time in such conditions, it may cause the rotating shaft to rust and seize.

How to Repair the Exhaust Fan

1. When using the heater, if you turn on the exhaust fan and hear a sound during operation, it doesn’t necessarily mean that the system has a problem. The noise may mainly be due to the rusted rotating shaft hindering operation. Many people might immediately call for a technician, but this is often unnecessary, as repair personnel might charge excessively. We can simply disassemble the exhaust fan and clean the interior. After using it for a while, it's advisable to clean it regularly. I suggest using professional cleaning agents for a more thorough cleaning that won’t damage the internal system of the heater.

2. To prevent issues with the rotating shaft of the exhaust fan, we can also apply some lubricant to the shaft regularly. This can increase its rotation speed and mitigate problems.

3. If the motor of the exhaust fan is faulty, it will also stop working. You just need to replace it with a new motor, and after purchasing, install it according to the instructions.

4. If the capacitor is damaged, it may also cause the entire exhaust fan to fail. Replacing it with a new capacitor should resolve the issue.

In summary:The above content introduces what to do if the exhaust fan of the heater is broken. I believe that you now have some solutions to address related problems. With the methods mentioned above, most people can solve the issue on their own.

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