11
EN
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)
Error
Cause / Remedy
Water taking an extremely
long time to heat up.
Water container furred. /
Descale water system (see
maintenance).
Water running off – 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-
age socket blocked. / Check
opening for soiling (slush,
ice, leaves etc.) and remove if
necessary.
Water dripping / flowing
from drainage socket of the
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 in the boiler.
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 FrostControl
cannot be closed again until
the temperature reaches ap-
prox. 7 °C.
Rotary switch is not set to
“Operation”. / Turn the rotary
switch of the FrostControl to
“Operation”, then press the
pushbutton until it engages.
If these actions do not remedy the problem, please
contact Truma Service.
Accessories
Truma CP plus
Digital Truma CP plus control panel with automatic cli-
mate control for the iNet-capable Truma heaters and
Truma air conditioning systems.
– The automatic climate con-
trol function automatically
controls the heater and the
air conditioning system un-
til the required temperature
is reached in the vehicle.
– Can be extended with
the Truma iNet Box. With
this, all TIN bus-capable
Truma appliances can
also be controlled via the
Truma App
Figure 9
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 10
Truma CP classic
Analogue Truma CP classic control panel (not for Combi E).
1
3
5
7
9
40
°
60
°
60
°
Combi
1
2
3
4
5
Figure 11
FrostControl heating element
Heating element with 1.5 m connector cable and retaining
bracket.
Figure 12
Other accessories (not illustrated) for control panels
– Control panel cable in various lengths (maximum 10 m)
