Service & Maintenance

Btu Buddy 41: Stopped Up Condensate Line

August 21, 2006
In this edition of the Btu Buddy series, Bob is dispatched to a home with water on the basement floor around the air handler. He determines that there is a condensate drain problem and he recommends installation of a condensate pump.
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Troubleshooting HVACR Systems Using Superheat and Subcooling

August 7, 2006
Regardless of your experience, to troubleshoot the system it is essential that you have a solid understanding of the fundamentals of refrigeration - including the principles of superheat and subcooling. You also need to have the right tools and know-how to apply these principles to use the tool quickly and efficiently.
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Btu Buddy 40: High Head Pressure, Air in System

July 24, 2006
In this installment of the Btu Buddy series, Bob is on a no-cooling call where the a/c system had just been repaired due to a refrigerant leak. Unfortunately, he discovers air in the system because it had not been evacuated.
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Air Conditioning Troubleshooting

July 10, 2006
Are you a technician that needs to do some troubleshooting on a totally dead air conditioning unit? Grab your tools and crank up the can-do attitude. Here are some tips for troubleshooting that air conditioner.
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Btu Buddy 39: Burned Transformer Due to Shorted Coil in Relay

June 26, 2006
In this edition of the Btu Buddy series, Bob goes on a service call and finds a failed transformer in an electric furnace. He discovers that the heat relay in the system has a shorted coil.
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Stop Blowing Hot Air

June 12, 2006
If you want to keep equipment operating in peak condition, make sure you select the proper replacement fan blade when replacing a worn or damaged one. Proper fan blade selection can sometimes get overlooked.
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Practical Ice Maker Troubleshooting Tips

May 29, 2006
Ice maker troubleshooting is easier if you take it one step at a time. In this article the author goes step-by-step through the most common ice maker troubleshooting calls.
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Btu Buddy 38: Frozen Evaporator on a 15-Ton Cooling Unit

May 15, 2006
In this installment of the Btu Buddy series, Bob finds a restaurant system that froze solid the previous night because the thermostat was turned down to 55 degrees. Btu Buddy suggests possible solutions to prevent it from happening again.
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The ABCs of DMMs

May 1, 2006
What exactly is a digital multimeter (DMM) and what can you do with it? How do you make measurements safely? What features do you need? What's the easiest way to get the most out of your meter? These and other questions are answered in this article.
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Btu Buddy 37: An Oil Furnace With Sooted Electrodes

April 17, 2006
In this edition of the Btu Buddy series, Bob goes on a call where an oil furnace won't always start. He discovers heavily sooted electrodes. Btu Buddy assists him in servicing the burner and cleaning the electrodes.
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