A week ago I installed a Honeywell HE260 replacing an old Kemmore humidifier. It worked fine. I just went downstairs and noticed that the top of the humidifier housing was loose from the mounting. Upon further inspection I could see theat the top of the housing appeared to have deformed and warped from the heat. I followed the instruction and know that the I didn't mount the unit to low (actually it is a high as possible).
I plan on exchanging it for another unit but I am concerned it will just happen again. Any suggestions woul be helpful. Thank you
Humidifiers are made from a very durable heat resistant plastic. If it melted or warped you have a serious overheating problem. That plenum should not get over 140 to 155 degrees. If this furnace is running to hot it could stress and crack your heat exchanger. Install a good carbon monoxide detector in your home!!!! Check your filters. Check your airflow. Make sure all registers in the house are open. Is your blower speed set high enough? If this furnace is operating to hot it is definitely worth the investment to have a pro look at it before you replace the humidifier.
Is this overheating problem new? Or was this something thar happened years ago and may have since been solved But you are just now noticing the heat damege that was caused.
Goog luck
HVAC Teacher
Unless you are using a current sensing relay or sail switch, you need to get the humidifier power from the blower motor supply so it only operates when the blower is on.
Since you can manually control the humidifier, there is not a fault with the solonoid.
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