How to Diagnose a Faulty Immersion Heater Element Fault-Finding and Safety Procedures This document provides technical guidance on diagnosing faults with hot water immersion heater elements and thermostats using a multi-meter. Before beginning any diagnostic work, it is mandatory to perform a full safe isolation procedure to ensure the components are electrically safe to handle. … Continue reading Diagnosing Faulty Immersion Heater Elements and Repairs