Service & Maintenance

Troubleshooting Challenge: A Thru-the-Wall Package Unit That Won't Heat

By Jim Johnson
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In this month’s troubleshooting situation, we have a customer who has called to say that their condominium has no heat. The particular equipment in this case is a thru-the-wall package unit that provides cooling in the summer and employs a natural gas system to heat the building in the winter.


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Btu Buddy 107: Heat Pump Service Call - Part 2

By Bill Johnson
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Bob and Tim are continuing a service call on a heat pump that has two failed auxiliary heaters. When they went to the supply house to get new heaters, they left wondering if the heat pump itself was operating up to capacity. After replacing the defective heaters, Bob suggested a visual inspection of the heat pump.


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Taking Action When Frozen Pipes Burst

By Brian Miller
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It’s a common winter woe affecting thousands of building owners and managers each year: frozen water pipes that burst. To minimize water damage caused by a frozen pipe burst, two critical steps must be taken. First, act fast to assess the situation, and then control the environment within the building.


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Btu Buddy 106: Heat Pump Service Call - Part 1

By Bill Johnson
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Bob and Tim have arrived at a home where the owner is complaining that the heat pump is not heating properly. It has been getting cold in the home during the late night and early morning hours. It’s really cold outside, about 10°F at night and 25° during the day.


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Troubleshooting Challenge: An Older Heat Pump With a Problem in Cool Night/Warm Day Weather

By Jim Johnson
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To prepare you for this month’s troubleshooting situation … you’re not the first technician to be called, nor are you the second technician. You’re the third one that’s been called in to solve this customer’s problem, which involves a heat pump that serves a residential building in a mild Southwest desert climate.


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Btu Buddy 105: Furnace Vent Problem

By Bill Johnson
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Tim and Bob have been sent on a service call to a new customer’s house. The homeowner has an unusual complaint. She said that she thinks she has a furnace problem because there is mold in her house. They don’t know what this can be all about.


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Can You Reduce Chiller Maintenance?

By Mike Taitano
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I simply don’t know of any way to reduce chiller maintenance (recommended scheduled maintenance), below industry standards and manufacturer recommendations, without reducing the system’s long-term efficiency and working life.


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Btu Buddy 104: Bob and Tim Continue Heat Pump Repairs

By Bill Johnson
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Bob and Tim have arrived back at the apartment building where they have been working for several days inspecting and making necessary repairs to the building’s split-system heat pumps. Bob said, “Check the list for another unit that seemed to have a problem and let’s take a closer look at it.”


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Troubleshooting Challenge: A Gas Furnace That Won’t Fire

By Jim Johnson
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In this situation we have a customer who has called for service on their gas furnace, and the description of the problem is “no heat at all.” The customer also reports that this is the first time they’ve had to call for service on their 10-year-old unit.


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Btu Buddy 103: Bob and Tim Begin Heat Pump Repairs

By Bill Johnson
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Bob and Tim have arrived at the apartment house that they have been working at for the last several days. They’ve gone to the roof where the outdoor units are located. There are 60 heat pumps that use R-22 as the refrigerant. They start with Unit No. 2.


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