Your phone rings at 7:00 a.m. in January. The homeowner says their heat pump quit, and the house is freezing. When you pull up, there's ice everywhere on the outdoor unit — a solid block covering the ...
As we head into the colder months, HVACR technicians need to understand the fundamentals of defrost control board operation. While there are many types of defrost control boards on the market, they ...
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