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Identify the Problem and Initial Diagnostic Steps

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Master Electrician Dad Teaches Son how to deal in Residential when HVAC isn’t working, Thoughts?

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What happens here

The video begins with an electrician (instructor) presenting a residential service call scenario: an air conditioning unit that is not running. He asks a student about the first steps to take. The discussion covers checking the thermostat to ensure it's calling for cooling and verifying voltage at the outdoor disconnect. The instructor then introduces the contactor as a key component, explaining that a failing contactor might 'chatter' and emphasizing the importance of checking its coil voltage.

Goal: Understand the AC problem and initial troubleshooting strategy

Tools and materials

  • Air Conditioning Unit — The system being diagnosed
  • Outdoor Disconnect — Main power shut-off for the outdoor AC unit
  • Thermostat — User interface for controlling the AC unit

What they say

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Let's assume now you're working on an air conditioning. We're working on an air conditioning and a customer says it's not running. What's the first [music] thing we're going to do? >> Check the contactor. >> We're going to check to see if the contactor is on. And how are we going to check that? >> Take the Take the cover off of the HVAC unit. >> Well, the first thing we want to do is go to the thermostat. We want to check the thermostat. We want to see if there's voltage at our thermostat, right? We want to make sure there's voltage at our disconnect outside. But if this thing starts to go bad, it starts [music] to chatter. A lot of times you'll hear these chatter when they start to fail. But we want to always check the coil voltage. So, if I

Auto-generated from the video audio.