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Maintenance                                      Fuses 230 V                                      FITTED EQUIPMENT
                                                 The fuse and the power supply lines must only
Only original Truma parts may be used for        be replaced by an expert!
maintenance and repair work! Materials in the    The unit must be disconnected from the mains
device which come into contact with water        (all poles) before opening the electronic
are suitable for use with drinking water (see    housing lid.
manufacturer‘s declaration: www.truma.com /      The fuse is in the power electronics (16)
downloads / manufacturer‘s declaration).         beneath the electronic housing lid.
                                                 This fine fuse must always be replaced with a
Bio-film, deposits and limescale must be         fuse of the same type: 10 A, slow, interrupting
removed using chemicals to protect the unit      capacity “H”.
from infestation by microorganisms.
                                                 Overheating protection 230 V
Only chloride-free products must be used in      The 230 V heating facility has a mechanical
order to prevent damage to the unit.             overheating switch. If the 12 V power supply
                                                 is interrupted during operation or during the
The effectiveness of the use of chemicals to     after-run period, for example, the temperatures
combat microorganisms in the unit can be         within the unit could activate the overheating
increased by heating the water in the boiler to  protection.
70 °C at regular intervals.

The unit must stay switched on for at least 30
minutes and no warm water may be removed.
The residual heat in the heat exchanger will
heat the water up to 70 °C.

Fuses 12 V

The fuse is in the electronics beneath the
connection cover.

Replace the unit’s fuse only with an
identical fuse.

Device fuse: 10 A – slow – (T 10 A)

                                                 To reset the overheating protection, allow
                                                 heater to cool, remove connection cover and
                                                 press red reset button.

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