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Jim Johnson

Jim Johnson is the director of training for Technical Training Associates, a Tucson, Ariz.-based firm that provides HVACR technician training DVDs/videos, E-books, and workshops. For more information, call 520-625-6847 or visit www.techtrainassoc.com.

Articles

ARTICLES

Wiring-Diagram

Troubleshooting Puzzle: A Chilly House

November 6, 2020

In this troubleshooting situation, the equipment is a gas pack, and the resident has called for service because the building “isn’t warm at all.”

October-Troubleshooting

Troubleshooting Puzzle: A Walk-In Freezer That’s Operating Erratically

October 12, 2020

In this troubleshooting situation, you are dealing with equipment that has only been in operation for two months.

Troubleshooting-Puzzle

Troubleshooting Puzzle: An Ice Machine That’s not Keeping up With Demand

September 5, 2020

In this puzzle, a restaurant manager complains that one of the ice machines in his high-volume establishment isn’t producing enough ice.

Troubleshooting-August

Troubleshooting Puzzle: An Ice Machine That Isn’t Dispensing Cubes Properly

August 5, 2020

In this troubleshooting situation, you have been called to a restaurant to check an older model ice machine that isn't working like it should.

Troubleshooting-July

Troubleshooting Puzzle: A System That’s Blowing Warm Air In July

July 15, 2020

This month’s troubleshooting situation involves an air-to-air, package unit heat pump that is approximately nine years old.

Troubleshooting-Puzzle

Troubleshooting Puzzle: A Reach-In That’s Not Maintaining Temperature

June 9, 2020

In this month’s troubleshooting problem, the equipment is a reach-in food and beverage storage unit.

Troubleshooting-Problem

Troubleshooting Puzzle: A Split System That’s Not Cooling

May 11, 2020

In this month’s troubleshooting problem, the equipment is a split system that’s approximately 8 years old.

Troubleshooting-Puzzle

Troubleshooting Puzzle: A Split System With A Low Side Pressure Problem

April 13, 2020

In this troubleshooting situation, a technician has responded to a complaint of “not cooling” on a six-year-old R-410A split system.

Figure-One-Troubleshooting

Troubleshooting Puzzle: An Older Split System That’s Not Keeping The Building Comfortable

March 13, 2020

The service history of this unit includes several electrical repairs, and in one instance, a leak in the sealed system was found and repaired.

Troubleshooting-puzzle

Troubleshooting Puzzle: A Gas Pack That’s Not Heating

February 3, 2020

In this month’s troubleshooting situation, a customer has called for service, reporting that their heating system isn’t working.

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