When you get used to the constant supply of hot water, a boiler breakdown becomes a blow. What to do if the water heater does not turn on? You can call the wizard, or you can try to determine the cause of the breakdown yourself. How to do this, read below.
Why the boiler does not work and how to fix the problem
You wanted to start the boiler, but it does not turn on? At the same time, the indicators on the panel do not light? First of all, check for voltage, as well as network elements. The reason may be in the defective parts of the heater. Let's consider everything in order.
Network Diagnostics
Without power supply, any Ariston, Oasis boiler will not work. Press the plug closer to the outlet: it may have come off. To check that the outlet is working, connect another device and make sure it works or not.
Inspect the network cable. It may be pinched or damaged. If the insulation is broken, it is better to replace the element. If the cable is intact, attach an indicator screwdriver to its ends. The worker will glow on the "phase", when connected to "zero" and "ground" - no.
See if the fuse is broken. It is important to choose the correct cable cross-section depending on the power of the boiler.
Diagnostics of RCDs is carried out. To do this, click the "Test" button. In this case, the device should turn off.
Perhaps the matter is wiring. If the TEN terminal is in poor contact, the heater will not turn on. It is necessary to tighten the terminals to the contacts or replace the wiring in the event of a malfunction.
Problems with the operation of the heating element
Thermex, Gorenje electric boilers perform heating with a heating element. In Termeks models two “dry” heating elements can be installed, which are enclosed in a flask. They burn when the equipment is turned on without water supply.
Wet elements are immersed in water and installed only in storage devices. A common cause of combustion is scale. Hard water contains impurities. They settle in spirals, creating a crust; as a result, the part overheats and burns out. To make sure that the element is burned out, a tester diagnostics is carried out. How to do this, we described in the article "Replacing the heater in a water heater."
Thermal protection tripped
This happens with a faulty temperature sensor or with the formation of scale. When the control board receives a signal that the water temperature exceeds 90 degrees, the thermal protection is activated and the heater is turned off. If the heater has turned off and the protection does not turn off, you can do this manually.
Work sequence:
- Unplug the appliance.
- Drain the water tank.
- Get the heater. To do this, unscrew the bolts or nuts of the flange.
- Take out the heater. If it is overgrown with scale, you need to clean it in the same way as the walls of the tank. Read: “How to clean a water heater.”
- The thermal protection button may be located in the base of the thermostat, but it is better to see the instructions for your model. Click on the button to disable it.
Pressure sensor
A similar malfunction is typical for flow technology. As soon as the pressure in the system rises, the membrane stretches, including the switch. The latter contributes to the supply of current to the heating element. If the membrane is damaged or stretched, it is better to replace it with a silicone one.
It also happens that the boiler does not turn off. There can be many reasons: the start button has sunk (stuck), the temperature switch or the temperature sensor has broken. To avoid sticking and burning out of the elements, do not forget - first the water turns on, and then the electricity.