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.

Figure One: Diagram of an electric furnace.

Troubleshooting Puzzle: An Electric Furnace That’s Not Performing

Jim Johnson

October 9, 2021

No Comments

The equipment in this month’s troubleshooting problem is an electric furnace that has been in service for at least ten years and has no service history.

Troubleshooting Puzzle: A Heat Pump That’s Not Heating Enough

Jim Johnson

September 2, 2021

No Comments

In this troubleshooting situation, the equipment is a package unit heat pump that isn’t properly heating the customer’s home.

Troubleshooting Puzzle: A Reach-In Freezer That’s Not Keeping Product Frozen

Jim Johnson

August 12, 2021

One Comment

In this troubleshooting situation, a restaurant manger is calling for service on a reach-in freezer, and the complaint is that the unit “isn’t freezing things hard.”

Troubleshooting Puzzle: A Light Commercial Air Conditioner That’s Blowing Warm Air

Jim Johnson

July 10, 2021

One Comment

In this troubleshooting situation, the customer’s complaint is that their office air conditioner is “not cooling at all.”

Troubleshooting Puzzle: A Comfort Cooling System That’s Not Performing

Jim Johnson

June 13, 2021

No Comments

In this month’s troubleshooting situation, the equipment that needs servicing is a split system and the refrigerant flow control is handled via an EEV.

Troubleshooting Puzzle: A Convenience Store That’s Not Comfortable

Jim Johnson

May 8, 2021

No Comments

The customer is complaining that the temperature inside their small convenience store won’t get comfortable in the warmer part of the day.

Troubleshooting Puzzle: A Split System With Ongoing Complaints

Despite several service calls, the system isn’t keeping the homeowner comfortable

Jim Johnson

April 9, 2021

No Comments

The equipment in this month’s troubleshooting situation is a split system that has only been in service for two years, but there is a lot of history.

Troubleshooting Puzzle: An Electric Furnace That’s Running Too Long

Jim Johnson

March 12, 2021

No Comments

Our troubleshooting problem involves a complaint from a customer who is concerned that their electric furnace is running excessively and wasting energy.

Troubleshooting Puzzle: An Under-Performing Heat Pump

Jim Johnson

February 5, 2021

2 Comments

In this troubleshooting situation, the customer’s description of the problem is that the unit is “running a lot, and not keeping the building warm.”

Troubleshooting Puzzle: A Gas Furnace That’s Not Heating

Jim Johnson

December 11, 2020

No Comments

Your troubleshooting situation this month involves an 80% single stage gas furnace that has been in service approximately seven years.

During this webinar, we will discuss what acidic condensate is, how it’s formed, and the damage it can cause if not properly treated—while hitting on the latest regulations that are driving the adoption of condensing technology.

On Demand Use the power of AI to your advantage to book more jobs and gain more operational efficiencies during busy season this year! See how an AI Employee can help you save time by qualifying every lead for you, automatically responding to incoming leads, and working overtime so you don’t have to.

Jim Johnson

ARTICLES

Troubleshooting Puzzle: An Electric Furnace That’s Not Performing

Troubleshooting Puzzle: A Heat Pump That’s Not Heating Enough

Troubleshooting Puzzle: A Reach-In Freezer That’s Not Keeping Product Frozen

Troubleshooting Puzzle: A Light Commercial Air Conditioner That’s Blowing Warm Air

Troubleshooting Puzzle: A Comfort Cooling System That’s Not Performing

Troubleshooting Puzzle: A Convenience Store That’s Not Comfortable

Troubleshooting Puzzle: A Split System With Ongoing Complaints

Troubleshooting Puzzle: An Electric Furnace That’s Running Too Long

Troubleshooting Puzzle: An Under-Performing Heat Pump

Troubleshooting Puzzle: A Gas Furnace That’s Not Heating

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