Service & Maintenance

Btu Buddy 116: Oil Burner Pump Problem - Part 1

November 19, 2012
Bob and Tim were on their way to a no heat call. It was an oil heat application and Tim was anxious to work on an oil system. He had not seen an actual oil heat installation, only in the school lab. Those are great, but not like the real thing at a customer’s house.


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Troubleshooting Challenge: A Heat Pump That Kicks Off

November 5, 2012
In this month’s troubleshooting problem we have a customer who can only tell us that their heat pump “isn’t working” and “the temperature in the building isn’t right.” When you arrive, you confirm the system isn’t operating properly. The indoor fan motor is running normally, but the building temperature is far from the thermostat set-point.


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Btu Buddy 115: No Cooling Call, Condensate Problem

October 22, 2012
Bob and Tim have arrived at a “no cooling” call at a commercial building location. They went first to the thermostat and noticed that the indoor fan was running, but there was no cool air coming out of the air registers.


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Prepare Customers for the Heating Season with an HVAC System Check-Up

October 8, 2012
In an effort to reduce the more than 700 deaths that occur due to carbon monoxide (CO) poisoning each year and ensure a safe winter heating season, northern Virginia HVAC contractor Jones-Rogers Inc. emphasizes the importance of an HVAC system check-up to avoid the risk of CO exposure.


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Btu Buddy 114: Excess Humidity in a House

September 17, 2012
Bob and Tim were on their way to a residence outside of town where the homeowners’ complaint was excess humidity in the house. When they arrived, they met the housewife and she told them, “The plumbing fixtures often sweat, there is mold in some of the closets, and mold is beginning to form in the laundry room.”


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Troubleshooting Challenge: A Gas Furnace That Heats, But Not Enough

September 3, 2012
This troubleshooting problem brings you to a three-bedroom, ranch style home on a concrete slab, which, as most typically do in this area of the Southwest, employs a rooftop evaporative cooling system in the summer and an upflow forced-air gas furnace for heating in the winter. The customer says one of the bedrooms “just won’t get comfortable.”


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Btu Buddy 113: Restriction in the Liquid Line Problem

August 20, 2012
Bob and Tim have been sent on a call to a house with no cooling. The system has just been installed and the construction crew has been having problems with startup. The system has a capillary tube metering device and Bob and Tim begin looking at what may be wrong.


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Furnace Installation Safety

August 6, 2012
This article deals with your personal safety when installing a new or replacement furnace. Topics covered include emergency procedures; clothing and safety gear; fall protection; electricity; lock out, tag out; GFCI; fuel safety; and confined spaces.


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Btu Buddy 112: Too Much Load for Air Conditioner

July 23, 2012
Bob and Tim were on their way to a residence where the occupants said their unit runs all day long, but the space temperature rises to 82°F while the thermostat is set at 75°. The unit shuts off during the night and the temperature inside is 75° in the morning, but during the day it rises.


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Troubleshooting Challenge: Assisting With a Split System Problem

July 9, 2012
In this month’s troubleshooting problem, you have been called by a colleague who is relatively new to HVACR to assist in repairing a split system in a manufactured home. The original diagnosis regarding this unit that is sitting dead was that the PCB 3-amp fuse was blown, and when it was replaced, the new fuse also failed.


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