air conditioning troubleshooting - Page 1

Items Tagged with 'air conditioning troubleshooting'

ARTICLES

Creating the Ultimate Refrigeration Troubleshooting Checklist

Being organized can help technicians quickly solve tough problems in the field

November 2, 2022

In addition to using proper tools and test instruments, technicians should use a checklist to help them troubleshoot refrigeration and air conditioning systems in the field.

Flame Furnace: Training Technicians with Simulation Boards

Layan Dahhan

September 8, 2022

The ACHR NEWS’ web editor, Layan Dahhan, visited Flame Furnace in Warren, Michigan, to find out how the company trains its technicians to troubleshoot furnace and a/c units.

Why Air Conditioning Systems Freeze and How to Fix Them

Understanding the basics will help your service team

Bryan Orr

January 20, 2020

Some systems we work on and install will freeze. Air conditioning is not one of them.

Troubleshooting Single Phase Residential Compressors

What to do when the system won't start

Dave Spates

September 16, 2019

This article will discuss tips on troubleshooting single phase, residential compressors that won’t start.

A Compressor Starting Problem

Jim Johnson

July 8, 2019

In this troubleshooting situation you have responded to a complaint that a 4-ton package unit air conditioner is not cooling.

How to Troubleshoot Air Conditioning Systems

Inefficient compressors, noncondensables, and air temperature can affect performance

John Tomczyk

July 1, 2019

This article covers air temperatures entering the condenser, inefficient compressors, and noncondensables in the refrigerant system.

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

John Tomczyk

March 4, 2019

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.

A Frozen Coil Can Hinder A/C System Effectiveness

Ice forms on the heat exchanger and acts as an insulator

Ron Roth

February 18, 2019

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.

Five Cold Hard Facts about Air Conditioning - The ACHR News

Infographic: Five Cold Hard Facts about Air Conditioning

January 21, 2019

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.

HVAC Contractors’ Guide to Troubleshooting Cooling Systems

Differences exist between R-410A and R-22, but best practices remain the same

Joanna R. Turpin

January 9, 2019

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.

More Articles Tagged with 'air conditioning troubleshooting'

On Demand As AI workloads and high-density computing push traditional cooling methods to their limits, the data center industry is accelerating the adoption of next-generation HVAC technologies.

In this session, we will cover how to design VRF systems for the U.S. market using new A2L refrigerants. These systems provide an advanced zoning solution by using inverter technology to deliver precise heating and cooling control across multiple zones and spaces.