Текст страницы
LED 70°C - Heating Element fault;
LED 80°C - Water overheating detected by an individual sensor;
LEDs 50°C and 80°C - Data flash error;
LEDs 60°C and 80°C - NFC Communication error;
LEDs 70°C and 80°C - General overheating (P.C.B. malfunction);
LEDs 50°C, 60°C and 70°C - NFC Error (PCB Fault);
LEDs 60°C, 70°C and 80°C - Operation without water.
Exit the diagnostic function by pressing the ON/OFF button (A in Fig. 3) or wait for 25 seconds.
Reset: to reset the appliance, switch the product off and on again using the ON/OFF button (A in Fig. 3). If the cause of the malfunc-
tion disappears immediately following the reset process, the appliance will resume normal operation.
If this is not the case, the error code will continue to appear on the display; contact the Technical Assistance Centre.
4. MAINTENANCE AND REPAIR WORKS
Attention! Do not try to repair the appliance by yourself. All maintenance and repair works should be carried
out by a qualified technician in conformity with the safety norms and with any provisions set forth in this manual.
4.1. Water Drain
If there is a possibility that the ambient temperature drops below 0°C in the room where the appliance is installed, drain
water from the water heater.
4.1.1. Disconnect the appliance from the electrical supply;
4.1.2. Make sure that the water in the appliance is of safe temperature;
4.1.3. Turn off the tap of cold water supply to the water heater;
4.1.4. Turn on the hot water tap on mixer for pressure relief inside the tank;
4.1.5. Turn on the T-connector stop valve installed at hot water outlet (marked with red ring) for air access into the tank. If it is
absent, remove the connections at the water heater outlet;
4.1.6. Connect drain hose directed into the sewer to the T-connector stop valve installed at the cold water inlet of the water
heater (marked with the blue ring) and open it. If there is no T-connector, connect the hose to water heater inlet;
4.1.7. After draining, make sure there is no water inside the water heater.
Freezing of water inside the water heater leads to irreversible changes and defects.
It invalidates all warranty liability on the part of the manufacturer.
4.2. Replacing internal parts
Prior to work, disconnect the appliance from the power supply and drain the water from the water heater. Remove the appli-
ance cover.
To replace the electronic thermostat (T in Fig. 3), disconnect the power cable from the terminal block (M in Fig. 3).
To replace the display board (W in fig. 3), disconnect the display cable (Y in Fig 3).
To replace heating element and magnesium anode (models with an autoclave flange) unscrew the nut (D in Fig. 4), remove the
flange holder (S in Fig. 4) and open the flange (F in Fig. 4) by pressing it inside. Remove the flange by turning it on its axis. To
replace heating element and magnesium anode (models with a flange on the 5 bolts) unscrew 5 nuts (C in Fig. 4) and remove
the flange (F in Fig. 4).
During reassembly, make sure that all components are put back in their original positions.
We recommend replacing the flange gasket every time when reassembling.
Prior to any repair or maintenance procedure, disconnect the unit from power source.
Use original spare parts of the manufacturer only.
4.3. Periodical maintenance
4.3.1. Magnesium anode
The magnesium anode rod is an integral part of the protection system of water tank and heating element
against corrosion against corrosion.
It’s necessary to check the condition of the magnesium anode rod ANNUALLY.
In case of severe wear, the magnesium anode rod must be replaced.
The warranty for water tank and heating element with the worn with the worn magnesium anode rod (residual
volume is less than 30%) is not valid.
The magnesium anode rod should be replaced at least once in 24 months (except for the water
heater with the internal tank made of stainless steel).
The magnesium anode rod is a consumable item that cannot be replaced underwarranty.
4.3.2. Safety valve
The safety valve (pressure safety device) must be inspected regularly to check that it is not blocked or
damaged. Replace the valve or remove limescale deposits if necessary. If the safety valve is equipped
with a lever, regular valve correct operation check procedure can be performed with its help.
The drainage pipe of the safety valve may generate water droplets. It is not a defect; it is due to relief
work function of the valve pressure relief that occurs when water is heated in enclosed space of the inner tank.
4.3.3. RCD (Residual Current Device)
If the appliance comes with a residual current device (RCD) located on the power cord,
and then after the tankof the water heater is filled with water and the system is checked
for leaks, put in the electrical plug of the water heater and do the following:
- Press «RESET» knob on the RCD body, LED will be lit indicating electricity supply.
- Then press «TEST» knob, power will be off, as well as LED.
- Press «RESET» knob again. If the power LED lit up, it means that the appliance is safe to use.
- If you press the «RESET» knob, but LED does not light up, contact the Technical Assistance Centre for advice by a qualified
technician.
57