Question about Bemis 447 301 Humidifier
Unit is plugged in to a functioning outlet, both tanks are full, fan motor dial is turned up, humidity dial is turn up beyond my normal setting, and for testing turned to max, humidity in the room lower than normal. I can hear the switch click when I turn the humidity dial up. Both tanks were empty yet no empty tank lights and fan won't function. I've had this unit for some years, maintain it well and know it well so I'm pretty sure I have covered all the possible bases I know of in trouble shooting. Please help me out.
I would look at the floating switch actuator. It's common for the float to bind up in the holder which keeps it in place. If the actuator is floating free, then look at the switch itself. Could be corroded or otherwise malfunctioning.
Posted on Nov 26, 2013
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Posted on Jan 02, 2017
Ever find a solution to this? I had the same bug after 2 years working fine, felt stupid as I couldn't understand it. I replaced both tanks for no good reason then it worked fine, took it out this season and it's doing it again.
Posted on Jan 02, 2010
The most typical problem like this indicate that there may be dirt built up in the fan compartment. The easiest way to check is to unplug the fan unit from the back of the humidifiier and lift it out, turn it over and check for any dirt or build up in the compartment. Once you have the power pack out of the unit, check and see if there is any damage to the spring for the shut off''s. There might be a piece of the shut off causing a short in the circuit stealing power from the motor. Correct alignment of the power pack/fan compartment is essential to correct operations also. Place the chassis/power pak unit into the cabinet ensuring that chassis/power pak seats correctly onto the front and back
edges of the cabinet.
You can remove the spring from the shut off switch and keep both bottles full and the unit will not know there care as long as one of the switches is made to keep the fan running. I have also had bad control pods for the fan control, these also get dirty and over time decrease their efficiancy. Sometimes it hepls to just turn the controls all the way up and down several times to help re establish good contact on these controlers.
Place the chassis/power pak
unit into the cabinet ensuring
that chassis/power pak seats
correctly onto the front and back
Posted on Dec 25, 2010
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