The answer to 'pipe frozen' is that a frozen pipe is a common problem during cold weather. Pipes can freeze when the temperature drops below freezing, causing the water inside to expand and potentially burst the pipe. Common causes include poor insulation, drafty areas, and extended periods of extreme cold.
Symptoms of a frozen pipe include no water flow, bulging pipes, or frost on the pipe surface. Solutions include slowly thawing the pipe, insulating exposed pipes, and in severe cases, calling a professional plumber to repair any burst or damaged pipes.