Humidity Sensing Bathroom Fan Won T Turn Off

Advantages of humidity sensing fans.

Humidity sensing bathroom fan won t turn off. On the other hand it shuts off when the indoor moisture level is low. If you set the air exchanger to keep the air at 40 humidity but it s 50 inside the bathroom fan will keep running until it s at 40 no matter what the switch is set to in the bathroom. He s coming back to re adjust the setting but if that doesn t work he advises to call the manufacturer. I did find with my fathers shower it took a long time before the fan turned off clearly the room was too damp.

If your humidity controlled fan has a pull cord it is also possible that somebody has pulled the cord to the override position in which case the fan will run continuously until switched back to the sensor mode. I have to go down to the main floor to shut off the fan. Normally fans have some form of run on normally set to about 15 minutes. Finally it will turn off the fan no matter what after 20 minutes.

Also humidity sensors are popular. The guy who installed it advised to leave them running for a few days to see if they turn off but to no avail. Some but not all fans with a pull cord will have a neon light to indicate when the fan has been pulled to override. Noise the more expensive units are well engineered and will therefore be much quieter that the cheap fans.

The dual sensor technology for motion and moisture automatically turn on while the humidity level is high. Then the switch in the bathroom won t shut it off. Bathroom fan won t turn off. They should have a decibel db rating on the box.

Conveniently it includes a speed selector switch that allows you to choose the fan speed from 50 80 and 110 cfm. It will turn on the fan if humidity rises above a set value.