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Old 10-28-2008, 10:01 PM   #1
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Aprilaire 760 testing / Repair


My Aprilaire that used to work does nothing. I pulled it apart, the hoses, solinoid, spray head, etc are all clean. H20 has a good strong flow going into solinoid.

I've jumped the wires, and it does not even attempt to engage. - no noise, nothing. It is pluged into a working power source.

Any ideas as to what else I can do with this thing? or is it time to just order a new one?

Thanks
Jamie

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Old 10-28-2008, 10:14 PM   #2
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Aprilaire 760 testing / Repair


Check if the xformer primary winding is open-circuited.
Then check the solenoid winding.
You could check that the humidstat closes the contacts at reasonable humidity levels but I doubt this would be the problem.

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Old 10-28-2008, 10:20 PM   #3
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Aprilaire 760 testing / Repair


Quote:
Originally Posted by Yoyizit View Post
Check if the xformer primary winding is open-circuited.
Then check the solenoid winding.
You could check that the humidstat closes the contacts at reasonable humidity levels but I doubt this would be the problem.
How do you check the winding?, can I measure the resistance on it with a meter?

I attempted to bypass the humidstat by jumping the wires.

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