A good digital multimeter (DMM) is key to diagnosing compressor problems in general. For instance, in a previous article (May 15 issue of The NEWS) we discussed using the DMM to read suction and ...

The digital voltmeter is the best basic tool for electrical troubleshooting, because it's calibrated and exact. But remember, the digital voltmeter can't detect a high-resistance fault if the circuit ...

These video training kits are designed for service managers who want to facilitate in-house training sessions on HVACR equipment servicing, and for HVACR instructors in secondary or post-secondary ...

We’ve all had those long days where you wish you could just find the electrical problem and get to the next job — or go home! The best way to try and avoid these frustrating days is to review prints ...

Let’s face it: Diagnosing electric problems is a pain, to say the least. You can get far with a test light and your trusty digital multimeter, but you still might end up just throwing parts at the ...

From the earliest days in vehicle history, electrical energy has been used for powertrain, lighting, and a multitude of accessories. Today, modern vehicles use multiple microprocessors onboard and all ...

Electrical problems are no fun. At least when the engine blows up or the axle dies you can pull it apart,actually see the broken part, and replace the busted piece. You just can't normally see an ...

Your electrical services firm has a new commercial client. They own 35 rental properties, including a recently purchased six-unit apartment building. It was built in the 1970s and has been remodeled ...

Ignition failures, nonfunctioning lights and complete engine breakdowns all can signal problems with a truck’s electrical system. But while most truck technicians know how to measure a truck’s voltage ...

Q: We bought a triplex about a year ago and hired a home inspector to find the defects. But he missed something that could cost us a lot of money. Recently, we re-rented one of the units, and the new ...