Ac Blower Fan Relay

The blower motor relay controls the current used to power the blower motor and is subject to the constant on and off switching.

Ac blower fan relay. Since the blower motor relay is essentially the switch that directly controls power to the blower motor the entire ac system will be left unable to distribute its cooled or heated air if the. Without it the ac system will not be able to circulate any heated or cooled air. If that s the case the blower will operate at lower speeds but when switched to high will not work. Look for terms such as a blower ac or cooling fan relay on your schematics to point you in the right direction.

Locating the correct relay can be tricky. I go over how to read the ratings for time how to. Thankfully it is fairly simple to tell if the relay is malfunctioning and to install a replacement. If the relay is blown out you will need to install a new one is soon as you can.

The blower motor relay is located in the. This may be true of the fully automatic systems as well. The blower motor is the component responsible for pushing air through the vents of your vehicle s heating and air conditioning systems. Control fans blowers motors up to 1 1 2hp tools and other electrical devices within ratings.

Blower motor relays and delay on break timers at amperite. Bring your damaged relay with you to the automotive or electronics shop to ensure you re getting the right part for your blower motor. Purpose of the fan center relay. This video will show you how to properly diagnose your blower by using the multime.

In some cases the relay may be wired to only the high speed circuit. The purpose of the fan center relay is to provide a low voltage control 24 volts to control a relay that can be used to control two speed blower motors and auxiliary circuits in heating or cooling equipment many of the newer furnaces do not have fan center relays but many of the older furnaces and some new furnaces still do. Install snap acting hvac relays from grainger in any position for remote control of air conditioning heating and ventilation systems.