American Standard Humidifier Fan Not Spinning

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Old 01-09-17, 08:51 PM
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American Standard Humidifier Fan Not Spinning

Hello,

I have a American Standard Fan Powered humdifier (AHUMD500A) and it seems that the fan does not turn on. I was installing a new humidistat and not sure if I caused the fan to not spin or if something else is wrong. How can I tell if it's the motor that's bad or if it's some other problem? For example, if I plug the fan into an outlet (not connected to the furnace) should it start spinning? If it doesn't does that mean the the motor is bad or could it be something else?

Thank You,
Dave
 
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Old 01-09-17, 10:45 PM
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If it has a regular two prong plug.... try it in a standard receptacle and see what happens.
 
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Old 01-10-17, 04:31 AM
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Hi Pete,

Thanks for your reply. When I plug it in to a standard outlet nothing happens.

Thank You,
Dave
 
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Old 01-10-17, 10:29 PM
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I was looking for a replacement and didn't readily see anything.
Are you replacing the motor ?
 
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Old 01-11-17, 09:40 AM
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Hi,

I ran a continuity test on the motor and it's fine. I also tested the voltage of the power cord and it seems fine. When testing the fan terminals on the control board it's reading just over 8 volts. I think this may be where the problem lies. I ordered a new control board and am hoping this will solve the problem.

Thank You,
Dave
 
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