Truma Cooler answer list

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Is there any unusual behaviour on your Cooler that you have questions about?
In the overview of the three different categories you will find information and possible remedial measures:
– Observed behaviour
– Error code
– App

Category: Observed behaviour

  1. The set temperature is not reached or the cooling output is too low
    Air circulation may be disturbed
    • Reduce the amount of products in the Truma Cooler or store them in such a way that air can circulate in the space between them
    • Ensure sufficient air supply at the ventilation openings and place the Truma Cooler in a cooler place without direct sunlight
    • Ensure that the cover is properly closed
    • Check the cover seal for damage and replace if necessary
      –
  2. The actual temperature of the Truma Cooler deviates from a separately measured interior temperature
    A temperature measurement with “household thermometers” is not meaningful due to various interfering influences. (e.g. open cover, measurement with laser on a wall, measurement without refrigerated/frozen food).
    • In the event of permanent temperature deviations, switch to OFFSET (press + and – simultaneously and hold for 3 seconds, “A0” is displayed). Use + or – to select the desired number of degrees (up or down by max. 5 °)
      –
  3. The Truma Cooler cannot be switched on
    Error in the power supply
    • Ensure power supply at the appliance input
    • Have the fuse checked by qualified personnel and replaced if necessary
      –
  4. The Truma Cooler does not work below 10 °C
    Malfunctions may occur below 10 °C and under unfavourable ambient conditions
    • Create a higher ambient temperature
      –
  5. Noises
    As with any cooling appliance, noises from the refrigerant and compressor are audible during normal operation.
    Between 15 and a maximum of 30° inclination, the volume of the compressor may increase (without affecting the cooling output).
    • Operate the Truma Cooler on a level surface
      –
  6. Hardware defect of any kind
    In the event of mechanical damage, the spare part can be obtained from a dealer.
    • Selected spare parts are available from 01.01.2024 onwards
    • e.g. cover, corner protection, seal, rubber foot, carrying handle
      –
  7. Display does not work or does not work properly
    Please contact your dealer or Truma Service
    • Operation via the app or with “emergency override” possible as a temporary solution
      –

Category: Error code

  1. Code E0
    Interruption at the temperature sensor (NTC)
    • Short-term: Operation in “emergency override” is possible
    • Long-term: Contact your dealer or Truma Service
      –
  2. Code E1
    Battery low charge protection has triggered due to undervoltage.
    LO: 10.1 or 21.5 V
    MED: 11.4 or 24.1 V
    HI: 11.8 or 24.6 V
    • Adapt the battery low charge protection to the current use
    • (see operating instructions)
    • Ensure supply voltage at the device input
      –
  3. Code E3 in normal operation
    Can occur with voltage change 230V/12V
    • Disconnect Truma Cooler from the supply voltage, wait 10 minutes and switch on again
      –
  4. Code E3 in “emergency override” mode
    Automatic switch-off after 8 hours
    • Disconnect the Truma Cooler from the supply voltage, wait 10 minutes and switch on again
      –
  5. Pulsating display “000” – Cooler does not start
    Error in the power supply
    • Ensure power supply at the device input
      –

Category: App

  1. No connection of the Truma Cooler with the app possible
    Note: in “CLO” mode, pairing is only possible by scanning the QR code.
    • The Truma Cooler can only be paired with one App or mobile device at a time.
    • Ensure that the Truma Cooler is switched on and the Bluetooth function is activated on both devices
    • Remove the Truma Cooler from the mobile device and restart the device search
    • Update the Truma Cooler App or uninstall the current version of the App and download the App again

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