Switch off the power of the attic fan and remove the power cord.
How to test attic ventilator thermostat.
Turn the attic fan off and unplug the motor from the thermostat.
Locate the thermostat casing and open it using a screwdriver.
Once done test that the motor still works by.
Step 1 test the fan motor.
Before running out to buy an attic fan take some time to check the existing attic its thermostat is installed in a control box and is prewired.
Attic ventilator may be wired directly to power we advise that some type of shut.
Note down the temperature settings for later reference.
Also note down the power rating and the fan capacity in cubic feet per minute.
Note down the wiring before proceeding to remove it.
It is very important to reduce the heat build up in the attic during the hot summer months.
Two possible ways of testing and adjusting a power attic ventilator.
Step 2 test the thermostat.
This diagram shows how to by pass the thermostat to turn the ventilator on or.
How to test an attic fan motor.
Moreover if you have asphalt shingles on the roof attic.