Mymodel hmc-6009 honeywell humidifer the fan runs constantly

The engine messed up.

Sounds like a Water Level Sensor problem. Read the service manual, pages 51 and 53.

http://www.forwardthinking.honeywell.com/related_links/humidification/69_2285.pdf



Unplug the power cord. Turn OFF water. Remove the Water Level Sensor - One screw holds down the spring clip. Remove water scale in the compartment and on the Sensor. Test Sensor with an ohm meter. If OK, reassemble and try again. If bad, replace the sensor.


If you have heavy scale buildup in the sensor compartment, you need better water filtration. Your problems are just starting. This system can be very difficult to clean thoroughly.

Try honeywell.com/support parts.

Poor design, buy a different brand, I have owned two, they are junk.

It sounds like your solonoid valve on the humidifier was slamming shut cause the water hammer, no call for heat, no humidifer.

these are flow thru models and a lot of water passes thru them. The instructions say to not limit the water by closing valve at all!

Unplug the machine and take both the water jugs off. Take the motor unit off and flip it over. Plug it into an outlet and press down the small silver contact at the bottom of the motor. When you press this down, a connection is made and the motor should turn on (Don't worry about being electrocuted, this is perfectly safe). If the motor turns on and runs at various fan speeds, you know it's not an issue with the main unit.

When looking at the base, on the left side you'll notice a plastic piece sticking up that's held down with a plastic shroud and 2 screws. This is you water level sensor. When the water level raises up, this also rises and hits the silver contact on the bottom of the motor. Make sure this isn't binding up(I suggest you clean it) I had the same issue with my HMC-6012i, lights were on at the indicated humidity level but the motor would never run. Take the unit apart, clean it out and follow my instructions. It should fire up (Mine is running right now :) )

You can try installing the water line to your hot water if it is installed on cold line for more humidification. You should make sure your humidistat is up line 6" @least from humidifier for proper humidification measurement.

Model HE908A drum is turning but we get no condensation

Mine had the same problem no water through the solenoid. It turned out to be the little adapter with the needle hole on it, attached to the solenoid on the intake side. It was clogged, cleaned it out and works great now.