16
Faults
Faults – Heater
Descriptions of possible fault causes and a troubleshooting
guide can be found in the operating instructions for the con-
trol panel that is installed.
Faults – Water supply
Possible fault causes and a troubleshooting guide – See
“Troubleshooting guide (water supply)”.
Troubleshooting guide (water supply)
Fault
Cause / Remedy
Water taking an extremely
long time to heat up.
Water container furred. /
Descale water system (see
maintenance).
Water running away – boiler
cannot be filled.
Safety/drain valve open. /
Close safety/drain valve.
Boiler cannot be drained,
even though the safety/drain
valve is open.
Safety/drain valve drain-
ing socket blocked. / Check
opening for soiling (slush,
ice, leaves etc.) and remove if
necessary.
Water dripping/flowing from
drainage socket of
safety/drain valve.
Water pressure too high. /
Check pump pressure (max.
2.8 bar). If the boiler is con-
nected to a central water sup-
ply (rural or urban connection),
a pressure reducer must be
used that will prevent pres-
sures higher than 2.8 bar from
occurring.
After the heater has
been switched off, the
FrostControl opens.
At temperatures of less than
approx. 3 °C the FrostControl
opens automatically / Switch
heater on / Without heater op-
eration the FrostControl can-
not be closed again until the
temperature reaches approx.
7 °C / Use heating element for
FrostControl.
The FrostControl can no
longer be closed.
Temperature at FrostControl
less than approx. 7 °C /
Switch heater on / Without
heater operation the Frost-
Control cannot be closed
again until the temperature
reaches approx. 7 °C.
Rotary switch is not
set to “Operation”. / Turn
the rotary switch of the
FrostControl to “Operation”,
then press the pushbutton un-
til it engages.
If these actions do not remedy the problem, please
contact Truma Service.
Disposal
The appliance must be disposed of in accordance with the ad-
ministrative regulations of the respective country in which it is
used. National regulations and laws (in Germany, for example,
the End-of-life Vehicle Regulation) must be observed.
In other countries, the relevant regulations must be observed.
Accessories
Truma CP plus
Digital control panel Truma CP plus with automatic air con-
ditioning system for the iNet-capable Truma heaters Combi and
Truma air conditioning systems Aventa eco, Aventa comfort
(from serial number 24084022 – 04/2013), Saphir comfort RC
and Saphir compact (from serial number 23091001 – 04/2012)
– The automatic air condition-
ing system function auto-
matically controls the heat-
er and the air conditioning
system until the required
temperature is reached in
the vehicle.
– With the Truma iNet Box
extension, all TIN-Bus-
capable Truma appliances
can also be controlled via
the Truma App.
Figure 6
Truma iNet Box
The Truma iNet Box for simple networking and control of
Truma appliances with a smartphone or tablet computer using
the app.
– Simple installation and
start-up via the Truma App
– Can be extended with the
update function, which
ensures that it is always up
to date
Figure 7
Truma CP classic
Analogue control panel for Combi D 4
1
3
5
7
9
40
°
60
°
60
°
Combi
1
2
3
4
5
Figure 8
Heating element for FrostControl
Heating element with 1.5 m connector cable and retaining
bracket.
Figure 9
Other accessories (not illustrated) for control panels
– The cable is available in different lengths.
