Non Condensables

by Ron Walker Non-Condensables One of the more difficult AC system problems to diagnose are non-condensables in the system. Non-condensables are always caused by improper system evacuation during an installation or repair. These poor procedures leave air, nitrogen, or moisture in the system. Non-condensables occupy condenser coil space that is normally used to condense refrigerants.…

Continue Reading →

Grow Your Own Tech

by Ron Walker If you’re looking for a new HVAC technician, you certainly will want a high level of competency, skill, and experience. But what about character, honesty, and moral courage? In this day and age, it is hard to find a skilled technician with work ethic, loyalty and integrity – they’re already working for someone else. If…

Continue Reading →

Troubleshooting a Reversing Valve

by Ron Walker Reversing valves don’t often fail, but when they do it can cause a lot of confusion while troubleshooting. There are three main things that can cause a reversing valve to malfunction: The valve is stuck in the heating or cooling position. The coil is defective. The valve is leaking internally. 1. If…

Continue Reading →

Safety, Safety, Safety!

by Ron Walker From time to time, I will go on a service call. Let me share with you what I ran into the other day. A friend called me to take a look at his AC system that was not working. It was a simple repair, bad capacitor, but to check and replace the…

Continue Reading →

Using Jumper Wires as a Troubleshooting Tool

by Ron Walker Jumper wires, when used correctly, are a great tool to help you troubleshoot HVAC equipment. But, when used incorrectly, they can damage the system you are trying to repair. Remember this one important rule – Never place a jumper wire across a load. Here’s why: If your place your jumper wire across a switch,…

Continue Reading →