Question about Aprilaire 700 Humidifier
This unit has been operational for about 6 years and suddenly quit, not even operational on TEST. There is a 25 v current at the power terminals and the resistance on the Auto-Trac wires is at ~31,500 ohms @ 33 degree outside temp. Voltage at the connectors leading to the unit itself are negligible (~1.3V) whether the switch is off or on Test and the unit is plugged in! The switch always gave a click when it engaged before, but there is no indication of such now. My suspicion is that the humidistat itself is defective, but I'd like to know if there are some additional tests to check that out.
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Posted on Jan 02, 2017
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