Guide :Humidifiers : HE360A1027 Whole House Humidifier Humidifier

Humidifier intermittently won't shut off with blower

I've just installed a Honeywell HE360A with a H8908B-1002 Humidstat and an A50 current sensing relay on the common blower wire. The humidifer kicks on with the blower no problem. But the problem is that it will not shut off when the blower goes off. Actually, it does shut off occasionally but 9 times out of ten I have to manually shut off the humidifier from the humidstat. This doesn't make much sense at all to me because I thought the A50 was part of the circuit and if there is no voltage, it must shut off, right? (I've check and re-checked the wiring and it is is correct, see figure 7

Research, Knowledge and Information :


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EZ Reference Guide on Aprilaire Humidifier ... - Masterhandyman


EZ Reference Guide on Aprilaire Humidifier Operation ... Your Aprilaire Humidifier is designed to operate in ... turn off the furnace blower and turn the ...
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OWNER’S MANUAL - Aprilaire Humidifier Parts, Expert Advice


Disconnect power and shut off ... Humidifier won’t shut off Turn dial to “Off.” ... AUTOMATIC HUMIDIFIER CONTROL: MANUAL HUMIDISTAT:).).
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Gas Furnace Repair and Troubleshooting - The Spruce


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