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