Can a Relay replace a Circuit Board?? | Understanding HVAC Electrical Concepts

After being asked about switches on circuit boards and switches on a relay, I decided to replace a Goodman fan board with a 90340 relay. As an HVAC tech I don't want you to think that this is the norm for any job. I am simply doing this to demonstrate that a switch is a switch and as long as you UNDERSTAND what you are doing you can easily master the concepts of a circuit board.

I think that this field has a lot of memorizing going on and it hasn't converted to learning yet. I went through it myself but I put in the time to learn the concepts needed to understand what I was doing and be able to think through problems while troubleshooting. It is a process.

I hope that this might show someone in the trade (not a homeowner) how relays haven't gone away. They are still there but incorporated into the circuit boards which have become so common in the equipment we use today.

*please do not say that I told someone that you should do this, I recommend replacing OEM parts always.

00:00 Intro
03:25 Replacing Circuit Board with 90340 Relay