AC Compressor Only Works When Relay Is Bypassed: How to Fix

‘AC compressor only works when relay is bypassed’. Familiar with this situation? Well, we’ve got your back. This article will delve into the depths of this specific AC compressor issue and provide a better understanding, along with possible solutions.

AC Compressor Only Works When Relay is Bypassed
Image Source: Wikimedia Commons

Brief Overview of AC Compressor Relay Issue

When your AC compressor only springs to life when the relay is bypassed, it’s typically a sign that something’s amiss. It could be the relay, the compressor, or maybe even something else. But don’t worry! We’re here to help unravel the mystery.

Summarizing the Issue: AC Compressor Only Works When Relay Is Bypassed

Essentially, this issue means your AC compressor isn’t getting the power it needs to function unless you bypass the relay. In layman’s terms? Your AC system’s lifeline is on the blink, and it’s time to play detective to find out why.

Diagnosing an AC Compressor That Only Works When Relay is Bypassed

Okay, we’ve covered the basics. Now, how do we diagnose this issue? Grab your notebook and let’s get started!

Why Would You Need to Bypass the Relay?

Think of it like this – if you need to bypass the relay to make the compressor work, there’s a good chance that the relay, our little messenger, isn’t doing its job. Maybe it’s on a coffee break or maybe it’s time for a retirement party.

Symptoms of a Failing AC Compressor Relay

So, how do you know if the relay’s acting up? Signs could be anything from your AC system not cooling effectively, irregular cycling, or as we’ve been discussing, the compressor not starting unless you bypass the relay.

Identifying Issues Specific to the Relay

Specific signs that point to a relay issue could be a buzzing noise coming from the relay or the relay failing to close. And of course, your AC compressor only works when the relay is bypassed.

Check out these other related articles:

AC Compressor Cycles On and Off Every 5 Seconds: How to Fix

AC Compressor Broken: Here’s What You Need to Know and Do

What is the Most Common Cause of Compressor Failure?

Fan Kicks On But Compressor Not Working: Causes & Fixes

Types of Compressor Failures: A Comprehensive Guide

New AC Compressor Not Turning On: Troubleshooting Guide

How Long Should an Air Conditioner Compressor Last?

Exploring the Reasons Behind the Relay Issue

Now that we know how to spot a faulty relay, let’s explore some reasons behind this pesky issue.

Faulty Relay

The most obvious cause could be a faulty relay. Relays can wear out over time, just like any other component in your AC system. It’s life, folks!

Indicators of a Bad Relay

If you’re dealing with a bad relay, you might see physical damage, a stuck switch, or a relay that doesn’t close or open as it should. And guess what happens when the relay fails? You got it – the compressor can’t start.

Electrical Problems

However, it’s not always about the relay. Sometimes, it could be an electrical problem. Wiring issues, circuit issues, you name it. The electrical realm is vast and mysterious, just like the universe.

Signs of Wiring or Circuit Issues

If it’s an electrical problem, you might spot burnt wires or blown fuses. Or maybe the circuit breaker keeps tripping. If that’s the case, it might be time to call in the professionals.

Compressor Issues

Last but not least, the issue could lie with the compressor itself. Yep, the heart of your AC could be having its own problems.

Evaluating the Health of the Compressor

To evaluate the compressor’s health, listen for strange noises or check if it’s overheating. If the compressor is faulty, it won’t work, even if the relay is trying its best to give it power.

Safe Procedures for Bypassing the AC Relay

So, we’ve established that bypassing the relay can make the compressor work, at least temporarily. But how do you do this safely?

Precautions When Dealing with the AC Relay

Dealing with electrical components isn’t a walk in the park. It requires caution. Always switch off the power to the AC before you begin. Wear rubber gloves and use insulated tools to protect yourself.

Safety Tips for DIY Relay Handling

Always remember, your safety comes first. If you’re unsure about any step, it’s better to call a professional. Don’t become a DIY daredevil!

Steps to Bypass the AC Compressor Relay

If you’re confident, you can try bypassing the relay. You’ll need a jumper wire, your AC manual, and some patience. The idea is to connect the power source directly to the compressor, bypassing the relay.

Walkthrough for Bypassing the Relay

Follow your AC manual to locate the relay. Connect one end of the jumper wire to the power terminal and the other to the compressor terminal. And voila! You’ve bypassed the relay. But remember, this is a temporary fix.

Long-term Solutions for AC Compressor Relay Problems

Alright, bypassing the relay is fine for a quick fix, but it’s not a permanent solution. So, what’s next?

Fixing the Relay Issue

One solution could be to replace the faulty relay. It’s like swapping out a tired, old messenger for a fresh, new one. Suddenly, all messages (or power) get through again!

DIY Solutions for a Faulty Relay

If you’re a seasoned DIY-er, you could try replacing the relay yourself. You’ll need a new relay, your trusty AC manual, and that handy set of tools. But if this feels like biting off more than you can chew, there’s another option.

When to Consult a Professional

Sometimes, it’s best to call in the pros. If you’re not comfortable dealing with electrical components, or if the problem seems bigger than just a faulty relay, it might be time to get some professional help.

Signs You Need to Contact an HVAC Specialist

If your AC isn’t cooling, the compressor isn’t starting, and bypassing the relay only offers a temporary fix, it’s probably time to pick up the phone. Remember, professionals have the training and tools to safely handle these issues.

Leave a Comment