Articles Tagged with ''troubleshooting''

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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The Professor: Bad Compressor Valves

By John Tomczyk
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Many servicemen experience service calls where the compressor has both a low head pressure and a high suction pressure. There are three main reasons why a compressor will simultaneously have a low head pressure and a high suction pressure.


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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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Data Loggers Help Keep Guests Comfortable at Marriott Hotels

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When a plumbing, heating or cooling snafu occurs in one of the 13 Marriott hotels under his supervision, it is John Miller’s job to root out the problem and preserve the comfort of guests.


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The Professor: Systematic Troubleshooting of a Restricted Liquid Line

By John Tomczyk
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The problem in this scenario is a restricted liquid line after the receiver. Where do you go from here?


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Btu Buddy 102: Continuing the Inspection of Multiple Split-System Heat Pumps

By Bill Johnson
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Bob and Tim are on the second day of an inspection of an apartment house building that has multiple split-system heat pumps. They have inspected all 60 outdoor units on the roof. They are now going to inspect the indoor units.


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Troubleshooting Challenge: A Heat Pump That Won’t Cool

By Jim Johnson
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In this troubleshooting situation, the equipment you’re servicing is a 240-volt, single-phase split system in a small office, and the customer’s complaint is that the system is blowing warm air.


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Btu Buddy 101: Bob Trains Tim on His First Service Call

By Bill Johnson
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Bob and Tim have arrived at Tim’s first service call. Tim asked Bob, “What is this call all about?” Bob said, “This is a new customer that wants us to take over the maintenance work for this apartment house.”


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Ice Breaker: A Hot Compressor

By Joe Marchese
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Replacing a compressor is neither simple for a technician nor inexpensive for the customer. Before replacing a compressor, a technician needs to ensure that it is truly defective. Unfortunately, sometimes good compressors get replaced as a result of a misdiagnosed problem.
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