Asked by: Cristin Feketeasked in category: General Last Updated: 19th February, 2020
What does a heater relay do?
Similarly one may ask, how does a heater relay work?
The electric relay in a furnace is responsible for relaying electrical power to the heating elements and the blower motor inside the furnace cabinet. The heating elements provide the heat to warm the air, and the blower motor sends this warmed air through the ductwork.
Similarly, where is the blower motor relay? Locate your vehicle's blower motor relay. In the vast majority of vehicles, you can access the relay through the glove compartment.
Similarly, it is asked, what are the signs of a bad blower motor relay?
If you have faulty blower motor resistor you may experience low airflow coming from the vents even when the fan is all the way on high. In some cases bad blower motor resistor may not even turn the blower motor fan as a result your fan will not work at all and there will be no air coming from the vents.
How do you check a relay?
Listen for a click when the relay is energized. Check the energized condition of the relay contacts. Use a digital multimeter (DMM) to test the resistance between each pole of the relay and the corresponding NC and NO contacts for that pole. All NC contacts should read infinite resistance to the corresponding pole.