1/17/2024 0 Comments Checking hot water heater elementThese could be programming adjustments and not part issues.ġ. Our first step is to not over “tech “ the situation, which means check and understand settings, expectations, and machine capabilities. There are just three heating circuit issues Not all these parts are used in every machine, but some combination of these parts will certainly be there. Power Switch: Controls all electricity after the switch Terminal Block: Connection where power supply enters machine Temp Probe / Thermistor: Controls voltage to element to control water temp Thermostat: Controls voltage to element to control water temp Triac: Controls power from supply to load Relay: Controls power from supply to load Solid State Relay: Controls power from supply to load Pressure Stat: Pressure-controlled contactorĬontactor: Bridge transfers electricity from supply to load Thermal Cut Off (TCO): Resistance-controlled safety link Using Ohm’s Law and your meter on the proper setting should allow you to diagnose any heating issues. Most multimeters have settings to measure AC voltage, amperage, Ohm’s, and continuity. It is a must to be able to read electrical wiring schematics and have working knowledge of how to use a multimeter. Servicing a machine with a heating issue begins with understanding the heating circuit, its path, and the parts in the path. The heating circuit is usually powered with the highest voltage that the machine is wired to, and caution is very important. Most common in today’s equipment, the heat source is electrical, and this is what we will be discussing in this article. These are espresso machines, drip coffee machines, tea brewers, hot chocolate machines, hot water machines and others. As a beverage equipment technician, we can see many different types of machines that heat water.
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