Questions & Answers for: Aprilaire humidistat

...getting enough humidity in the air My Aprilaire 600 appears to be operating properly, however,the humidistat never registers above a "1". FYI-The unit is attached to the intake ductwork and the ...

Solenoid won't open--voltage drops when connected to humidistat Our Aprilaire 600 humidifier's solenoid doesn't open, so no water ever goes through. I think I've isolated the problem to the solenoid ...

...& labor)? If I'm not mistaken, the 600 has a automatic or manual control built in to the same humidistat. The only thing required is the outside air sensor (oas) be mounted outside and wired ...

...solenoid. The humidstat is a '56'. Won't work in 'test' position. Outside sensor is hooked up to humidistat: The following voltage checks were performed:( while on and demanding heat): - voltage ...

Humidistat does not turn unit on check for supply voltage to the humidistat and the humidifier. Also check all electrical connections carefully. It may simply be a bad humidistat. these are non ...

...but no display. Also for some reason no water is coming out. Thank you for contacting us. Does your humidistat have a blower activation switch on the lower left hand side of the humidistat? If you do ...

...to control humidity is not responding and wont turn off Hello, sounds likemyou have either a bad humidistat or solenoid valve, disconnect the wires from the humidistat if this turns off the ...

I have an AprilAire 550A with bad humidistat. Can't find replacement. Got a 550 but wiring not right. Not sure what to do! I have an AprilAire 550A with a broken humidistat. I thought I saw that ...

humidifier not working model 700 iam getting 24v in on humidistat none out when I jump the to brown wires on the humidifier it runs do I need 24v out of the humidistat? do you have a test mode on your

Solenoid valve When the Humidistat is set at 45% and the furnace is on the circulating fan on the humidifier is working but no water is flowing through the solenoid valve.I hear the clicking when I ...