Question about Aprilaire 700 Humidifier
I went to change the filter and notice no water was flowing. The unit remained completely dry even after running in test mode.
I searched here and could not find the solution, but after troubleshooting I did solve the problem (posting this as a solution below)
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
Posted on Dec 28, 2007
I'm no expert, but those who are seem to agree that the first thing to check is your evaporator panel. Aprilaire recommends replacing it annually--so if you haven't replaced it recently, that would be the first step to take. Next, check the power supply to your Aprilaire unit. Turn the humidistat to 0%, and then turn it slowly back toward 35% until you hear a click at the unit. If you don't hear a click, you'll want to check that the unit is in fact getting electric power (you may want to get an electrician or furnace tech to do this). If you do hear the click, the next thing to check is whether you have sufficient water flow to your Aprilaire unit. On mine, I had to adjust my water supply saddle valve, as well as the inline valve on the discharge side of the solenoid (see prior post from this morning)--and this seemed to clear the lines and restore water flow. Once you achieve proper water flow, you will probably want to set your humidistat at 35% for winter temps of around 20 degrees F--but be sure to adjust it downward for colder weather. Comments, anyone?
Posted on Dec 15, 2008
SOURCE: solenoid on Aprilaire 600
solenoid valves dont just burn up just like that you have a recurring restriction due to bad water.Check the saddle valve at the water heater first then check for postive water flow at inlet to the solenoid valve,if you have water flow the valve is clogged with sediment.
Posted on Jan 13, 2009
This sounds like, the 550 transformer is not connected to the blower motor power connection (in parallel)
Posted on Mar 04, 2009
Tips for a great answer:
Dec 21, 2010 | Aprilaire 600 Humidifier
Dec 09, 2010 | Aprilaire 400 Humidifier
Nov 17, 2010 | Aprilaire 700 Humidifier
Feb 27, 2010 | Aprilaire 600 Humidifier
Feb 09, 2010 | Aprilaire 550 Humidifier
Jan 11, 2010 | Aprilaire 600 Humidifier
Feb 18, 2009 | Aprilaire 600 Humidifier
Jan 26, 2009 | Aprilaire 700 Humidifier
Jan 06, 2009 | Aprilaire 600 Humidifier
1,431 people viewed this question
Usually answered in minutes!