Ohms Law and HVAC | Heating and Cooling Technical

Ohms Law and HVAC - Ohms Law is used by HVAC Technicians, electricians, electronics technicians, engineers, and others who deal with electrical circuits every day. It is a necessary fundamental that anyone dealing with electricity or electronics should learn. Ohms law is used in many different applications to solve problems (troubleshooting electrical problems), for sizing wire and designing circuits, and for designing printed circuit boards (PCBs). Ohms law is a basic fundamental formula that helps electrical specialist solves problems. Ohms Law is necessary to learn if you are going to be an above-average technician in HVAC.
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Heat Pump Frost Ice BuildUp | HVAC-Troubleshooting

Heat Pump Frost Ice Buildup. Hi. I noticed that one of my outside heat pump condensing units was laboring throughout the night. This morning I found ice frost buildup on the heat pump condenser fins. I live in Tucson, Az. It has been colder than normal (below freezing) with a bit more moisture in the air than usual as of late.

Can you please tell me what causes this frost ice buildup, and how I go about rectifying it? Does this mean that the condenser pump is shot? I’m originally from the Midwest and have never experienced this before. What should I be doing? Thank you for your help. (more…)