Question 1

The battery may be fully discharged or switched off automatically due to high temperatures or system protection.

Accepted Answer

Make sure that the BatteryPack is fully charged. If exposed to high temperatures, allow it to cool and switch it on again.

Question 2

Plugs may be loose, power connection faulty, or ambient temperature outside the permitted charging range.

Accepted Answer

Make sure that all plugs are plugged in properly, check that the power connection is functioning, and charge only at temperatures between 16 °C and 40 °C.

Question 3

The BatteryPack has automatically switched off due to low charge (voltage falls below 12.6 V) or system protection activation.

Accepted Answer

Fully charge the BatteryPack immediately; do not store it while all four LEDs are flashing to avoid deep discharge damage.

Question 4

Deactivation due to low charge (output voltage below 12.6 V) or activation of system protection due to anomalies such as short circuit, overvoltage, overload, etc.

Accepted Answer

Disconnect the BatteryPack from the Truma Cooler, resolve the cause of the fault, reattach it to the Truma Cooler, and activate it. In the event of deep discharge, fully charge the BatteryPack.

Question 5

The BatteryPack may be discharged or has automatically deactivated due to exposure to high temperatures.

Accepted Answer

Check that the BatteryPack is fully charged, or allow it to cool down if it has been exposed to high temperatures, and reactivate it.

Question 6

Incorrect connections, power supply failure, or ambient temperature outside the permitted range.

Accepted Answer

Check that all plugs are securely connected, verify that the power supply connection is working, and perform charging only at temperatures between 16 °C and 40 °C.

Question 7

Battery is depleted or has automatically shut down due to excessive heat exposure.

Accepted Answer

Ensure the BatteryPack is fully charged, allow it to cool down if exposed to high temperatures, and switch it on again.

Question 8

Incorrect plug connections, non-functional mains connection, or ambient temperature outside the permitted range.

Accepted Answer

Ensure all plugs are correctly inserted, check mains connection functionality, and charge only within the 16 °C to 40 °C temperature range.

Question 9

Low charge cut-off activated (output voltage below 12.6 V) or system protection triggered (short circuit, overvoltage, overcharging, deep discharge, simultaneous charge/discharge, or excessively high ambient temperature).

Accepted Answer

Disconnect from Truma Cooler, eliminate the cause of the fault, reconnect, and fully charge the battery immediately if deep-discharged.

Error Code / Indicator	Symptom / Meaning	Step-by-Step DIY Fix	Suggested Actions
`Operational Fault`	The battery may be fully discharged or switched off automatically due to high temperatures or system protection.	Make sure that the BatteryPack is fully charged. If exposed to high temperatures, allow it to cool and switch it on again.	DIY Safe
`Operational Fault`	Plugs may be loose, power connection faulty, or ambient temperature outside the permitted charging range.	Make sure that all plugs are plugged in properly, check that the power connection is functioning, and charge only at temperatures between 16 °C and 40 °C.	DIY Safe
`Operational Fault`	The BatteryPack has automatically switched off due to low charge (voltage falls below 12.6 V) or system protection activation.	Fully charge the BatteryPack immediately; do not store it while all four LEDs are flashing to avoid deep discharge damage.	DIY Safe
`Operational Fault`	Deactivation due to low charge (output voltage below 12.6 V) or activation of system protection due to anomalies such as short circuit, overvoltage, overload, etc.	Disconnect the BatteryPack from the Truma Cooler, resolve the cause of the fault, reattach it to the Truma Cooler, and activate it. In the event of deep discharge, fully charge the BatteryPack.	DIY Safe
`Operational Fault`	The BatteryPack may be discharged or has automatically deactivated due to exposure to high temperatures.	Check that the BatteryPack is fully charged, or allow it to cool down if it has been exposed to high temperatures, and reactivate it.	DIY Safe
`Operational Fault`	Incorrect connections, power supply failure, or ambient temperature outside the permitted range.	Check that all plugs are securely connected, verify that the power supply connection is working, and perform charging only at temperatures between 16 °C and 40 °C.	DIY Safe
`Operational Fault`	Battery is depleted or has automatically shut down due to excessive heat exposure.	Ensure the BatteryPack is fully charged, allow it to cool down if exposed to high temperatures, and switch it on again.	DIY Safe
`BatteryPack cannot be charged`	Incorrect plug connections, non-functional mains connection, or ambient temperature outside the permitted range.	Ensure all plugs are correctly inserted, check mains connection functionality, and charge only within the 16 °C to 40 °C temperature range.	DIY Safe
`Operational Fault`	Low charge cut-off activated (output voltage below 12.6 V) or system protection triggered (short circuit, overvoltage, overcharging, deep discharge, simultaneous charge/discharge, or excessively high ambient temperature).	Disconnect from Truma Cooler, eliminate the cause of the fault, reconnect, and fully charge the battery immediately if deep-discharged.	DIY Safe

Truma Cooler BatteryPack

Technical Specifications

Master Troubleshooting & Diagnostics Matrix

Frequently Asked Questions

Q: How do I switch the BatteryPack on or off?

Q: Can I connect the Truma Cooler to the BatteryPack and vehicle power supply at the same time?

Q: What should I do if the BatteryPack has been dropped or damaged?

Q: How is the BatteryPack attached to the cooler?

Q: Can the BatteryPack be charged while powering the Truma Cooler?

Q: Can the BatteryPack be transported by airplane?