Truma iNet Box
The Truma iNet Box is developed for controlling iNet-capable devices such as smartphones or tablet PCs using Bluetooth or GSM communication. It enables remote operation of connected appliances like heaters and air conditioners via the Truma App or SMS.
Technical Specifications
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
Operational Fault | The iNet Box is not ready for operation and the power LED is off. | Check all plug-in connections and ensure there is a sufficient voltage supply. | DIY Safe |
Operational Fault | The iNet Box is not ready for operation and the power LED is off. | Check all electrical plug connections and ensure sufficient supply voltage. / Check all plug connections and ensure a sufficient power supply. | DIY Safe |
Cannot control connected appliances | Connected devices cannot be controlled through the system. | Check the operational availability of the Truma iNet Box, verify correct connections and operational status of connected devices, and restart the iNet Box by disconnecting the power supply for approx. 10 seconds. | DIY Safe |
Poor network coverage | Poor network coverage for GSM communication. | Check the mounting of the Truma iNet Box, verify network coverage at your current location, check the internal/external GSM antenna switch, and confirm whether your mobile provider supports 2G (GSM) network connections. | DIY Safe |
Operational Fault | GSM operation is not possible and the red LED illuminates. | Check the operability of the mini SIM card (e.g., if it was blocked by the operator), verify the PIN in the Truma App configuration assistant, and check the internal/external GSM antenna switch. | DIY Safe |
Operational Fault | Bluetooth operation is failing while GSM works. | Ensure Bluetooth is active and connected on the mobile device with sufficient battery, verify you are within Bluetooth range, and repeat the Bluetooth connection configuration. | DIY Safe |
Operational Fault | The device is not receiving sufficient power or has a bad connection. | Check all plug connections and whether the power supply is sufficient. | DIY Safe |
Operational Fault | Communication failure or connected appliances are not ready. | Check that the Truma iNet Box is ready for operation, check connections, and perform a restart by disconnecting power for about 10 seconds. | DIY Safe |
Operational Fault | GSM operation is not possible or SIM card issues exist. | Check that the Mini-SIM card is functioning properly and not blocked, check the PIN in the Truma App setup assistant, and check the internal/external GSM antenna switch. | DIY Safe |
Operational Fault | Bluetooth connection is inactive or out of range. | Make sure Bluetooth is active and connected on the mobile device, verify you are within range, and repeat the setup of the Bluetooth connection. | DIY Safe |
Operational Fault | Connected appliances cannot be controlled via the iNet system. | Check the operating readiness of the Truma iNet Box and the correctness of the connections, and perform a restart by interrupting the supply voltage for approx. 10 seconds. / Check operating readiness, correct connection, and perform a restart by disconnecting the power supply for approx. 10 seconds. | DIY Safe |
Operational Fault | GSM operation is not possible due to a configuration or SIM error. | Check the function of the mini SIM card, verify the PIN code in the Truma App installation wizard, and check the internal/external GSM antenna switch. / Check the functionality of the Mini SIM card, the PIN code, and the antenna switch. | DIY Safe |
Frequently Asked Questions
Q: How many mobile terminals can be connected to the Truma iNet Box via Bluetooth?
Multiple mobile terminals can be registered, and up to four terminals can control the Truma iNet Box simultaneously.
Q: Is the use of a mini SIM card mandatory?
No, the Truma iNet Box can also be used without a mini SIM card, but in that case, usage is limited to the close-range field via Bluetooth.
Q: How is the factory settings reset performed?
By pressing the button on the Truma iNet Box for a minimum of 20 seconds until a brief illumination of the blue LED indicates that the reset has been completed.
Q: What kind of SIM card is required for the Truma iNet Box?
A Mini-SIM card (25 x 15 mm) with its own call number, sufficient credit, and a 2G mobile network (GSM) connection is required.
Q: How many mobile devices can be connected simultaneously?
Up to four mobile devices can control the Truma iNet Box at the same time.
Q: How do I reset the Truma iNet Box to factory settings?
Press the button on the top view for at least 20 seconds until the blue LED lights up briefly, indicating the reset and TIN2 appliance search are complete.
Q: What network is required for SMS remote control?
The Truma iNet Box requires a 2G (GSM) mobile network connection with a mini SIM card to send and receive SMS messages.
Q: How many mobile devices can be connected via Bluetooth simultaneously?
Up to four mobile devices can be paired, and four mobile terminals can control the Truma iNet Box simultaneously.