Attic Fan Thermostat Not Working

Replacing a defective thermostat.

Attic fan thermostat not working.

The replacement is quite simple and straightforward. Attic fan not turning on. If you observed that the attic fan is not switching off and on at the preset temperatures the attic fan thermostat might not be functioning properly and you might need to replace it. These easy steps will guide you to replace a defective thermostat.

Why won t it stop running. Btw we don t have a switch installed for it do we need to have a switch installed. If the motor is working but the fan blades are not moving the problem may be the belt. Remove the outer casing of the attic fan and check to see if the belt is sagging cracked worn or broken.

The big complaint that leads to an attic fan request is usually a hot second floor which can largely be mitigated by air sealing the attic and installing a generous bit of insulation drastically reducing conduction and convection. Adding an attic fan may help to lower the ambient temperature in the attic but it s not an ideal solution. Unless you are qualified to do electrical troubleshooting if the breaker for that circuit is not tripped and the power switch is on you need an expert. If you notice that the attic fan is not switching on or off according to temperature variation it indicates that the thermostat is no longer functioning properly.

It is on all day and night nonstop we live in los angeles but it s not that hot yet the thermostat is set at 120 degrees. Locate the thermostat casing and open it using a screwdriver. All of a sudden that attic fan isn t needed anyway. We are on our second attic fan but it won t stop running.

Your attic fan may not be turning on because of an electrical problem like a tripped circuit breaker a blown fuse or a bad connection. Little or no airflow. If there is any damage to the belt replace it with a new one. Switch off the power of the attic fan and remove the power cord.

Just like the first one. Turn off the attic fan and remove the cord from the outlet. You could get up there through the attic and check the blade is not obstructed will spin freely and look for any sign of burning or smoking.