Truma TEB-3 / TN-3
Official technical documentation and workshop diagnostics for TEB-3 / TN-3.
Technical Specifications
Operating Voltage12V DC / 230V AC
Power Consumption0.2 to 1.2 A (TEB-3) / 0.5 A (TN-3)
Fuse Ratings2.5 A (medium time-lag, 5 x 20 mm)
Dimensions Cutout211 x 279 x 145 mm (TEB-3) / 211 x 279 x 158 mm (TN-3)
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | Unit does not function and fan rotates in the wrong direction after fuse replacement or connector reattachment Possible Cause: Incorrect polarity of the control unit and power supply connector | Disconnect the power supply, check the polarity, and reconnect the connector correctly. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |
N/A | General appliance failure or loss of power (TEB-3) Possible Cause: Blown appliance fuse due to electrical fault | Disconnect the fan voltage, remove the housing, extract the circuit board, and replace the defective fuse with one of the same type (2.5 A, semi-delay). Reassemble securely. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |
N/A | Control panel is without function and the fan runs in the reverse direction Possible Cause: Incorrect polarity of the control panel and power supply connectors | Check the 12V supply line, inspect the plug fuse, and ensure connections are secure with correct polarity. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |
N/A | Fan does not operate Possible Cause: Blown appliance fuse (F1) or disconnected power supply | Disconnect the fan from the power supply, check fuse F1 on the electronic control unit, and replace with an identical fuse (2.5 A, medium time-lag). If the issue persists, have repairs carried out by a specialist. | DIY Check / Tech Fallback |