Service

When the boiler is powered on, the power indicator (POWER) will light up. The power indicator is located on the control panel on the front of the boiler, and if it is lit, this means that the boiler is powered on.

Check the circuit breakers in the distribution panel. If everything is turned on and the boiler isn’t receiving power, the next thing you should do is check the wiring inside the boiler (only after completely turning off the power supply).

If the wiring is correct, check the voltage. To do this, you will need to turn the power back on. This inspection should only be performed by a licensed electrician, as the boiler may be live at that time. Using a multimeter, check the voltage between the L and N power terminals. You should get a reading of approximately 220–230 V. If there is voltage but the indicator light is not on, then the power indicator is faulty. Contact us for a replacement.

If there is no voltage at this point, you will need to check the electrical circuit for faults and restore power to the boiler.

You should check whether the thermostat is set to a temperature higher than the temperature shown on the thermometer. The boiler will only heat up if the water inside it is colder than the thermostat’s set temperature.

When you turn the thermostatic regulator clockwise and pass the set temperature, you should hear a click, followed by the sound of the contactor engaging. You will then notice that the temperature and pressure begin to rise.

Check the temperature reading on the thermometer, because the thermostat dials aren’t always set correctly. You can also use a separate thermometer to check the temperature if you have any doubts.

Each boiler is equipped with an overheating protection feature which, depending on the model, is set to shut off the boiler if the water temperature exceeds 75°C. This is a safety feature designed to prevent overheating.

The overheat protection must be manually reset before the boiler can start operating again. To reset the protection, you must turn off the power supply and remove the boiler cover. You will see the relay located on the water tank inside the boiler; you can identify it by the small red (or black on some models) button. Press this button to reset the relay.

Replace the boiler cover and restore power. The boiler should now operate normally. If this relay frequently activates and shuts down the boiler, you will need to lower the operating temperature to a stable level, check the circulation, and ensure there is no air in the boiler or system.

If an external control is used, the boiler requires a heating signal to turn on. Make sure that all external control elements are connected correctly and that the setpoint temperature is set higher than the current measured temperature.
If external control is not used, make sure the red jumper is in place.

The boiler will not operate if the water pressure is less than 0.5 bar. This prevents the boiler from overheating when there is no water in it.
Low pressure is indicated by the PRESSURE warning light on the control panel at the front of the boiler. You can also check for low pressure on the pressure gauge.

You should check the entire heating system for leaks to make sure you aren't losing water anywhere.

Once you have fixed all leaks, you can restore the system pressure to 1.2 bar.

Once the system is pressurized, the pressure indicator should go out and the system should start operating normally.

An electrician can use current clamps to measure the current drawn by the boiler when it is turned on and generating heat. This can be done by placing the clamps on the power cable (or cables in a three-phase installation) and recording the meter reading. Check the meter reading against the expected current values in the data table in the user manual.
A lower-than-expected current reading may indicate that one or more heating elements in the boiler are damaged. Please contact us for advice on repairs and replacement.