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TRUMA COMBI 4E/6E BOILER
                                                TROUBLESHOOTING

Troubleshooting                                                                                     FITTED EQUIPMENT

Fault                   Cause                         Rectification

After switching on      - No operating voltage.       - C heck 12 V battery voltage,
(winter and summer                                     charge if necessary.
operation) none         - D evice fuse or vehicle
of the controls are      fuse defective.              - Check all electrical plug connections.
operational.
                                                      - Check the unit or vehicle fuse and
                                                       replace if necessary
                                                       (see fuses).

The unit is switched    - The temperature setting    - Select higher room temperature at the
on, but the heater       on the control panel is       control panel.
does not operate.        lower than the room
                         temperature.

After operating for a   - Summer operation with      - S witch device off and allow to cool.
longer period of time,   empty                         Fill boiler with water.
the heater switches      water tank.
to failure.                                           - Check individual outlet apertures.
                        - Hot-air outlets blocked.

                        - R ecirculated air intake   - R emove blockage from recirculated
                         blocked.                      air intake.

                        - G as pressure regulator    - U se regulator heating (EisEx).
                         iced up
                                                      - U se propane (at temperatures below 10
                        - Butane content in the gas   °C in particular, butane is unsuitable for
                         cylinder                      heating purposes).
                         too high.

Fan continues to        - Unit was switched off      - After-running will switch off after a few
run after controls       during failure. After-        minutes. Only at that time will a failure
switched off             running is active in order    reset be possible (switch off and then
                         to reduce the unit’s          back on).
                         temperature.

                        - After-running is active in - No failure. After-running will switch off
                         order to reduce the unit’s after approximately 5 minutes.
                         temperature.

When the device         - No 230 V operating         - Check 230 V operating voltage, and
is switched on in        voltage.                      settings on power supply unit
electrical operation,                                  (EC400/ES600)
the heater does not     - 230 V fuse defective.
heat up.                                              - C heck 230 V fuse and replace if
                        - Overheating protection      necessary.
                         has activated
                                                      - Reset overheating protection. Allow
                                                       heater to cool, remove connection
                                                       cover and press reset button.

If these measures do not remove
the failure, please contact the Truma
Service Centre.

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