Aprilaire 700 installed in 2005. Last year some flakey issue with water [seemed way too much water was flowing], so I just used the water on/off valve to regulate due to time restrictions I had. I figured it was a bad solenoid, so I bought a new solenoid this year, now here is what happens. Even when the furnace and humidifier is off, water continues to flow into the AprilAire 700 tray, regardless. If I turn on the furnace and turn the heat up I can turn the knob on the humidstat and hear the clicking, however the water flow never stops.
The float may be bad or sticking allowing water to run continusly even when unit is off.
Testimonial: "Bryan how do you check the float? seems like the water flows from the water tank, copper tube, through strainer, solenoid, up through hose at top of filter pan."
Bryan thanks again for commenting. I found the solution. I looked at my old solenoid and the new solenoid. Here the water inlet is on the opposite side on the new solenoid. So I had to switch the water inlet to the other side.
×
SOURCE: aprilaire 600 humidier: water continuously runs
sounds like you may have it wired to a continuous power source vs one that shuts off with the furnace. The most common wiring is red to C & white to W
SOURCE: Aprilaire 760 Humidifier water continues to run
You need to determine whether the problem is in the solenoid or in the furnace electronics. You could put a voltmeter on the solenoid connection to see if the furnace is still holding the solenoid open after the blower stops. This will tell you whether it is the solenoid or not.
SOURCE: Humidifier control .
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
SOURCE: Aprilaire 600: water only runs in "Emergency" Heat mode
When your unit is on normal the outside unit works and the inside only the fan runs. your heat pump does not remove any humidity when it operates so the installation cotractor did not wire it to operate then. you can change the wiring on the humidifier to operate all the time by wiring it to the fan (g) terminal then it should work just turn it all the way to the lowest humidity when you are in cooling mode.
SOURCE: water keeps running into humidifier even furnance blower is not
This sounds like, the 550 transformer is not connected to the blower motor power connection (in parallel)
864 views
Usually answered in minutes!
One comment to add, last year I removed a electric Trane Air Cleaner we had installed beside our furnace. That was wired as well. Is it possible my AprilAire 700 wiring needs to change because I removed this?
×