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Home » Keywords » air conditioning troubleshooting

Items Tagged with 'air conditioning troubleshooting'

ARTICLES

Freezing

Why Air Conditioning Systems Freeze and How to Fix Them

Understanding the basics will help your service team
Orr hs
Bryan Orr
January 20, 2020
No Comments
Some systems we work on and install will freeze. Air conditioning is not one of them.
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Compressor-Collection

Troubleshooting Single Phase Residential Compressors

What to do when the system won't start
Spates web
Dave Spates
September 16, 2019
No Comments
This article will discuss tips on troubleshooting single phase, residential compressors that won’t start.
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SMJul19-ACHR-NEWS

A Compressor Starting Problem

Headshot johnson jim
Jim Johnson
July 8, 2019
One Comment
In this troubleshooting situation you have responded to a complaint that a 4-ton package unit air conditioner is not cooling.
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How to Troubleshoot Air Conditioning Systems - The ACHR News

How to Troubleshoot Air Conditioning Systems

Inefficient compressors, noncondensables, and air temperature can affect performance
Headshot tomczyk john
John Tomczyk
July 1, 2019
No Comments
This article covers air temperatures entering the condenser, inefficient compressors, and noncondensables in the refrigerant system.
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Technician inspecting outside condensing unit. - The ACHR News

Don’t Just Add Refrigerant to a System Before You Know the Issue

Talk to customers and be sure of diagnosis before taking action
Headshot tomczyk john
John Tomczyk
March 4, 2019
One Comment
The homeowners of a medium-sized house complain of reduced airflow coming from their registers during the summer. Their air conditioner is a 4-ton (48,000 Btuh), R-22 split system with the A-coil in the plenum of the furnace located in the basement. The evaporator has an orifice for a metering device, and the condensing unit is located on the east end of the house.
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AC System

A Frozen Coil Can Hinder A/C System Effectiveness

Ice forms on the heat exchanger and acts as an insulator
Ron roth
Ron Roth
February 18, 2019
One Comment

One common customer complaint about their central HVAC systems is that the a/c system is running but not providing any cool air to the controlled space. One of the most common reasons for this situation is that the a/c condenser or evaporator coil has frozen over. This term or phrase literally means that ice has formed on the heat exchanger, preventing the transfer of heat since the ice is acting as an insulator.


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Five Cold Hard Facts about Air Conditioning - The ACHR News

Infographic: Five Cold Hard Facts about Air Conditioning

January 21, 2019
No Comments
A recent survey showed that 87 percent of U.S. homes had some form of air conditioning. In 1993, only 68 percent of all occupied housing units had AC.
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Troubleshooting Cooling Systems 1

HVAC Contractors’ Guide to Troubleshooting Cooling Systems

Differences exist between R-410A and R-22, but best practices remain the same
Tn joanna 2017
Joanna R. Turpin
January 9, 2019
No Comments

While many of those R-22 systems have been replaced with R-410A units, a large installed base still remains, meaning that technicians will have to know how to troubleshoot and service both types of equipment for many years to come.


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JOE MARCHESE

Tips to Help Prevent Cold Stress When Troubleshooting Refrigeration Systems

How to reduce the risk of cold-related injuries when working on refrigeration systems
February 5, 2018
No Comments
During the course of troubleshooting and repairing refrigeration systems, there are times when refrigeration technicians need to work in extremely cold environments for extended periods of time.
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Ice Box Construction

Btu Buddy 165: What is a Ton of Refrigeration?

Bill johnson
Bill Johnson
December 19, 2016
No Comments

Bob and Tim have had a big day at work — it’s 3:30 in the afternoon, and they are done for the day. They’re having coffee at a local restaurant, talking about their careers when Tim asked a question, “What is a ton of refrigeration, and why is it called a ton?”


Read More
More Articles Tagged with 'air conditioning troubleshooting'
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