The regulation thermostat is a safety feature that manages and verifies the temperature in the tank.
When the water is hot enough, the thermostat cuts off the electric heater. Then, the tank cools down.
The safety thermostat, on the other hand, monitors the operation of the regulation thermostat and ensures there is no overheating.
This type of tank thermostat is attached with a fixing paste or by a spring directly placed on its probe.
The stick-on thermostat regulates the water in your water heater through a system of pins connected to the sheathed resistance.
At the end of the thermostat, there is a capillary tube containing a bulb. Inside this bulb is a specific amount of liquid that reacts to the water in the tank. Depending on the volume of liquid in the bulb, the thermostat turns the electrical contact on or off.
It consists of a long metallic rod that responds to temperature changes, indicating to the water heater thermostat head to cut off the electric heater.
Your water heater's regulation or safety device may have a bulb with a variable length and specific diameter (usually expressed in millimeters). To choose the right one, refer to the technical instructions for your tank or measure directly on your bulb thermostat.
Unipolar, bipolar, or tripolar, it all depends entirely on your installation.
Whether it is a rod or stick-on type, your tank regulation device uses a contact system to turn on or off the electric heater. This type of contact depends on the water heater's resistance.
To avoid problems with Legionella, it is highly recommended to set the water heater temperature to 60°C. At temperatures above 40°C, this bacteria stops reproducing but is not eliminated.
Generally, this rod or stick-on regulation system has an adjustable range between 40°C and 120°C.
However, be careful not to set the temperature too high, or you might turn red like a lobster in the shower!
Temperature sensing can be done with one bulb or two bulbs, typically one for regulation (bipolar with a differential) and another for safety temperature.
On some models, there is a dial for adjustment, while others have an adjustment screw to turn. If there are no temperature indicators around the dial or screw, you can reference a graduation order inscribed (often between 1 and 5).
First, turn off the power! A good DIYer is a safe DIYer.
Next, simply unscrew the thermostat and set it to a mid-range measurement.
Now, heat the probe by bringing it close to an active heat source, such as a match. Avoid using the annoying musical birthday candle that never goes out... Don’t subject yourself to that pain; you deserve better.
If you hear a little “click” followed by another sound a few minutes later, it means your regulation device is working well. Otherwise, it is faulty.
When performing maintenance on an electric water heater, it is necessary to reset the water heater thermostat afterward. We assist you in this process through this article where our expert guides you step by step in the revision of the water heater. With this tutorial, you will first test the water heater thermostat and then reset the water heater thermostat.
For this, nothing is better than a tutorial for replacing a water heater thermostat !
To check it, you need to test it. Get a flathead screwdriver and refer to the question "How do I test my tank thermostat?".
Change, replace,... Let's not split hairs! The answer can always be found in this tutorial for changing a tank thermostat.
The cause may lie with the electrical connections or fuses. Otherwise, check the electric resistance of the water heater (for a stéatite resistance, it’s possible that the sheath or the candle needs to be cleaned).
To avoid excessive electricity consumption, you’ll need to switch articles: discover our advice for installing an economical water heater thermostat.
Change, replace,... Let's not split hairs! The answer can always be found in this tutorial for changing a tank thermostat.
Nothing beats a response in a video on wiring a tank thermostat.
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