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Old 08-10-2014, 03:25 PM   #1
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Radon Fan Stopped Working


My radon fan stopped working. It is 8 years old. In past years, it would stop and start again on its own. Buy we're selling the house and I need it to work. Is there a way to see if it is an electrical problem or do I need to replace the fan?
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Old 08-10-2014, 03:32 PM   #2
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Plug something else into the receptacle and see if it works. This will tell you if it is a power issue or the fsn.
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Old 08-10-2014, 05:08 PM   #3
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It is hard wired and it is the only device on the circuit. It goes from a subpanel in the garage. The connections look secure.
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Old 08-10-2014, 05:27 PM   #4
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Do you have a multimeter?
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Old 08-10-2014, 05:29 PM   #5
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Or even a non-contact tester
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Old 08-10-2014, 07:05 PM   #6
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Quote:
Originally Posted by sweaty View Post
It is hard wired and it is the only device on the circuit. It goes from a subpanel in the garage. The connections look secure.
Easy way to check. Unhook it from the connection in the Junction box, and test with a decent Digital Multi-Meter. Where exactly is the fan located at.

At eight years of continuous running. It is normal for these fan units motors to wear out. Fix is just go get another one and replace old with new.



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Old 08-10-2014, 07:27 PM   #7
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I have a multi-meter and a non-contact tester. The fan is in the garage attic. How do I test for a possible electrical problem?
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Old 08-10-2014, 08:25 PM   #8
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Quote:
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I have a multi-meter and a non-contact tester. The fan is in the garage attic. How do I test for a possible electrical problem?
Forget about the no contact. It is not going to work for this kind of stuff. Just unhook the fan out of the junction box, remove it from the Fernco fittings holding it onto the PVC pipe.

Then take it back down into the garage and see if it will turn when you try and spin it. If not, then attach the wires to a plug and see if it powers up. If not, it is a bad fan.

Also check for voltage at the junction box. If there is voltage when the breaker is on. Replace old fan with new fan.



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Old 08-10-2014, 08:35 PM   #9
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Forget about the no contact. It is not going to work for this kind of stuff. Just unhook the fan out of the junction box, remove it from the Fernco fittings holding it onto the PVC pipe.

Then take it back down into the garage and see if it will turn when you try and spin it. If not, then attach the wires to a plug and see if it powers up. If not, it is a bad fan.

Also check for voltage(or if you don't want to dismantel everything as above, and before you know whether you have voltage available.... check the feed wire with a non-contact tester) at the junction box. If there is voltage when the breaker is on. Replace old fan with new fan.

Best and good luck

(Personally, and only an opinion, I'd check to be sure I had an electrical feed before I dismantled everything)
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Old 08-10-2014, 08:52 PM   #10
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I too would check for power at the fan before removing the fan.
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Old 08-11-2014, 06:16 PM   #11
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I removed the fan and spun it by hand. It is not seized. With the power off and using a multi-meter, I saw continuity when I touched one lead to the white wire and one to the ground wire. Does this mean there is no electrical problem and I just need to replace the fan?
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Old 08-11-2014, 07:59 PM   #12
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Quote:
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I removed the fan and spun it by hand. It is not seized. With the power off and using a multi-meter, I saw continuity when I touched one lead to the white wire and one to the ground wire. Does this mean there is no electrical problem and I just need to replace the fan?
No. It just means that you are not using the meter properly.

You need to go check for power where the fan was connected. The reason for bringing it down to the garage. Is because it is cooler than it is in the attic. You can check the fan to see if it powers up. By connecting a plug to the end and plugging it in.



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Old 08-11-2014, 10:18 PM   #13
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Quote:
Originally Posted by sweaty View Post
I removed the fan and spun it by hand. It is not seized. With the power off and using a multi-meter, I saw continuity when I touched one lead to the white wire and one to the ground wire. Does this mean there is no electrical problem and I just need to replace the fan?
Only means your neutral and earth are bonded,

Not what you need to know !

You need to know if the black is hot relative to the white.


When it is in the faulty mode (fan not working).
Check to see if there is correct voltage across white and black.
Use your meter, set to AC volts.

Last edited by dmxtothemax; 08-11-2014 at 10:21 PM.
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