Trouble-Shooting List - Truma Trumatic C 4002 Gebrauchsanweisung

Trouble-shooting list

Fault
Gas operation
• No control lamp lights
up when the system is
switched on (winter and
summer operation).
• The green indicator lamp
comes on when the equip-
ment is switched on (using
the ZUC timer), but the
heater is not operating.
• The red monitor lamp flash-
es after the heating system
has been switched on.
• About 30 seconds after the
heating has been switched
on, the red monitor lamp
lights up and remains
steady.
• Heating switches to Fault
mode after an extended
period of operation.
230 V electrical
operation
• No control lamp lights
up when the system is
switched on.
Water supply
• When the heating system
is switched off, the
electrical safety/drain valve
opens.
• The electrical safety/drain
valve will no longer close.
• Water dripping from the
electrical safety/drain valve.
If these measures do not lead to the rectification of the fault, in principle we would ask you to contact the Truma
Service Centre.
12
Cause
– Device fuse or vehicle fuse
defective.
– Open window above cowl
(window switch).
– Open window above cowl
(window switch).
– Warning! Battery voltage is
too low (< 10.5 V).
– Gas cylinder or quick-clo-
sure valve in the gas line
is closed.
– Air feed interrupted.
– Hot-air outlets blocked.
– Gas pressure regulator
iced up.
– Butane content in the gas
cylinder too high.
– No supply voltage.
– Outside temperature
below 4°C.
– No 12 V power supply at
the drain valve.
– Outside temperature
below 8°C.
– No 12 V power supply at
the drain valve.
– Water pressure too high.
Rectification
– Charge battery voltage (12 V).
– Check all electrical plug connections/fuses.
– Close window.
– Close window.
– Charge battery!
– Check gas feed.
– Check cowl for possible coverage.
– If being used on boats, open the deck cowl.
– Check individual outlet apertures.
– Use de-icing system controller (EisEx).
– Use propane (at temperatures below 10°C in particular,
butane is unsuitable for heating purposes).
– Check 230 V supply voltage and fuses.
– Switch the heating on. At temperatures of about 4°C and
below the drain valve will open automatically!
– Check 12 V supply voltage and fuses.
– Switch the heating on. Without heating operation, the drain
valve will not close again until temperatures above 8°C have
been reached!
– Check 12 V supply voltage and fuses.
– Check pump pressure (max. 2.8 bar). If connected to a
central water supply (rural or urban connection), a pressure
reducer must be used, which will prevent pressures higher
than 2.8 bar entering the boiler.