Question about Aprilaire 700 Humidifier
Aprilaire 700 humidifier properly wired to outside sensor, to humidifier solenoid/fan and furnace. Works properly in test mode for 1 minute as stated in instructions. Solenoid/fan, water flow does not come on in any setting. I notice when juggling wiring going to control that the water panel change indicator and the red diagnostic light flickers off and on. Wiring to all terminals firm. Could I have a bad Humidifier control unit?
If humidifier was wired into thermostat circuit for power instead of seperate transformer , this can happen. you need to see if you voltage going to the solenoid valve. if you do , and it isn't opening, the valve is bad . this is assuming that it is using a # 50 relay to come on only when the fan runs . . make sure the water valve is open
Posted on Dec 28, 2007
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Posted on Jan 02, 2017
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