6
Safe maintenance and repair
• Repairs may only be carried out by an expert.
• Children must not carry out maintenance,
repair or cleaning work.
• Before accessing terminals, please secure all
supply circuits (i.e. 12 V) and make sure that
the gas supply is securely turned off.
• Any work involving connection or intercon-
necting wiring must be carried out by a li-
censed electrician.
• Only use AquaGo decalcification tablets to
decalcify the appliance to avoid damage and
the voiding of your warranty.
– Never use vinegar.
– The use of non-Truma-approved substances
for decalcification can cause chemical re-
actions and produce hazardous substances
that could enter the drinking water.
• Any alteration to the appliance or its controls
can cause unforeseen serious hazards and
will void the warranty.
• After a long period of winterisation: Flush all
hot/cold water hoses and the appliance thor-
oughly with drinking water before using it.
• Keep the appliance free of foreign objects,
e.g., leaves, animals, spiderwebs, and keep
the area around free of snow and ice. The
appliance will not function properly if the in-
take air or exhaust terminal is obstructed.
Safety features
The appliance is equipped with the following safety devices:
Flame monitoring
If the flame goes out, the gas supply to the burner is switched
off (after 3 failed restarts).
Low-voltage (over-voltage) shutdown
If the voltage drops below 10 VDC (or rises above16.4 VDC),
the appliance shuts off.
Overcurrent protection
If there is a short circuit in the appliance (>10 A), a fuse on
the control unit is activated and the appliance is switched off.
Monitoring of the flue fan
If there is a failure of the flue fan, the gas supply to the burner
is switched off.
Monitoring of hot water temperature
A water over temperature switch avoids excessively high wa-
ter temperatures in case of a malfunction.
