Manual Trumatic Combi 4 E (page 19 of 72) (English, German, Dutch, Danish, French, Italian, Spanish)

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Trouble-shooting list

Fault Cause Rectification

No LED is shining, the device

is switched on and is supplied

with operating current.

Automatic restart is

blocked, e.g. after a power

failure.

– Reset (fault reset) by switching off, waiting 5 seconds

and then switching on again.

–

After switching on (winter and

summer operation) none of the

LEDs are lit.

No operating voltage.

Device fuse or vehicle fuse

defective.

–

Check 12 V battery voltage, charge if necessary.

Check all electrical plug connections.

Check the unit or vehicle fuse and replace if necessary

(see fuses).

–

The green LED comes on when

the unit is switched on but the

heater does not operate.

The temperature setting on

the control panel is lower

than the room temperature.

– Select higher room temperature at the control panel.–

After switching on the heating

system, the green LED shines

and

the red LED flashes with 5 Hz,

the red LED flashes with 1 Hz,

the red and the yellow LEDs

flash alternately with 1 Hz.

–

Open window above cowl

(window switch).

Under-voltage.

Battery voltage is too low

< 10.0 V.

No 230 V operating

voltage.

230 V fuse defective.

Overheating protection has

activated.

Threatening under-voltage.

Battery voltage is too low

< 10.4 V.

There is a threat of under-

voltage when heating up

the water.

Battery voltage is too low

< 10.4 V.

–

Close window.

Charge battery. If necessary replace old battery.

Re-establish 230 V operational voltage.

Replace 230 V fuse.

Reset overheating protection. Allow heater to cool,

remove connection cover and press reset button.

Charge battery.

–

After the heater is switched on,

the green LED is lit and the red

LED blinks.

Electronics are defective.– Please contact the Truma Service Centre.–

Approximately 30 seconds after

the heater is switched on, the

red LED is lit.

Gas cylinder or quick-clo-

sure valve in the gas line is

closed.

Combustion air infeed or

exhaust outlet is sealed.

–

Check gas supply and open valves.

Inspect openings for contamination (slush, ice, leaves,

etc.) and remove contamination if necessary.

–

After operating for a longer pe-

riod of time, the heater switches

to failure.

Summer operation with

empty water tank.

Hot-air outlets blocked.

Recirculated air intake

blocked.

Gas pressure regulator

iced up.

Butane content in the gas

cylinder too high.

–

Switch device off and allow to cool. Fill boiler with

water.

Check individual outlet apertures.

Remove blockage from recirculated air intake.

Use regulator heating (EisEx).

Use propane (at temperatures below 10 °C in particu-

lar, butane is unsuitable for heating purposes).

–

Green and red LEDs flash (with

5 Hz) after the heating system

has been switched off.

Green LED flashes (with 5 Hz)

after the heating system has

been switched off.

Unit was switched off dur-

ing failure. After-running

is active in order to reduce

the unit’s temperature.

After-running is active in

order to reduce the unit’s

temperature.

–

After-running will switch off after a few minutes. Only

at that time will a failure reset be possible (switch off

and then back on).

No failure. After-running will switch off after approxi-

mately 5 minutes.

–

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Trumatic Combi 4 E Manual

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