Quarterly Inspections; Annual Inspections; Magnesium Anodes 29. (Fig.9); Emptying The Boiler. (Fig.20) - TESY AquaThermica Compact HPWH 3.2 100 Installation And Maintenance Manual

Thermal protections
First step protection: when the tank water goes up to 80°C, the unit will stop and the relating error code will be
shown on the controller. This is an auto-reset protection. When tank water temperature goes down, the unit can start
again.
Second step protection: when the tank water keeps going up and reaches 90°C, the manual reset cut-off will be
active, the electrical heater stops, unless you manual reset the protector.
11.2.

Quarterly inspections

• Visual inspection of the general conditions of the equipment systems as well as the absence of leaks;
• Inspection of the ventilation filter, if present
11.3.

Annual inspections

• Inspection of the tightness of bolts, nuts, flanges and water supply connections that may have been loosened by vibration;
• Check the state of integrity of the magnesium anodes (see paragraph 10.4).
11.4.

Magnesium anodes 29. (Fig.9)

The magnesium anode (Mg), also called "sacrificial" anode, avoids any parasitic currents that are generated inside the boiler
that can trigger corrosion processes on the device surface.
In fact, magnesium is a metal with a lower electrochemical potential when compared to the material that lines the inside of
the boiler, therefore it first attracts the negative charges that form with the heating of the water and that cause it to corrode. Therefore,
the anode "sacrifices" itself by corroding instead of the tank.
The integrity of the magnesium anodes must be checked at least every two years (even better if checked on an annual basis). The
operation must be carried out by qualified personnel. Before performing the inspection, it is necessary to:
• Empty the water from the boiler;
• Remove plastic cover 35
• Dismantle the flange cover 32 by unscrewing the bolt 33
• Unscrew the Mg anode 29 and check its state of corrosion, if more than 30% of the anode surface is corroded then it is necessary
to replace it;
• Assemble everting in reverse order. Change the Flange seal 31 each time when flange cover 32 has been opened.
The integrity of the magnesium anodes must be checked at least every two years (even better if checked on an
annual basis). The manufacturer does not bear the responsibility for all consequences caused by not obeying the
instructions, given hereby.
11.5.

Emptying the boiler. (Fig.20)

It is advisable to drain the water from inside the boiler if the boiler is idle for a certain period of time, especially in low tem-
peratures.
Close tap 5 (Fig.20). Then open the tap hot water in the bathroom or kitchen which one is closer to the tank. Next step is to
open draining tap 6
N.B.: It is important to empty the system in case of low temperatures in order to avoid the water freezing.

12. TROUBLESHOOTING

In case of problems of equipment performance, without the occurrence of any of the alarms or errors described in the rela-
tive paragraphs, it is advisable to check to see if the problem can be easily solved by checking the possible solutions specified in the
table below prior to seeking technical assistance.
The heat pump does not work
The compressor and/or the fan do not work
Problem
There is no electricity;
The plug is not correctly inserted in the socket.
The set safety period of time has not finished;
The scheduled temperature has been reached.
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Possible causes