Truma Boiler B 10 / B 14
A liquid gas storage water heater designed for installation in caravans, motorhomes, and other recreational vehicles. The EL versions feature an additional 230 V, 850 W electric heating element to allow for dual-source or electric-only water heating.
Technical Specifications
Gas Pressure Mbar30 mbar
Power Consumption 12v1.6 A (Fuse rating)
Power Consumption 230v850 W (EL models only)
Water Capacity Litres10 L (B 10) / 14 L (B 14)
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
Operational Fault | Backflow caused by pressure pumps with high switching hysteresis. | Install a non-return valve between the outlet to the cold water tap and the drain valve. | DIY Safe |
Operational Fault | Blown boiler fuse or incorrect electrical connection. | Check and replace the 1.6 A slow-acting fuse (IEC 127/2-III) located on the control p.c.b. Verify 12 V polarity (red = positive, blue = negative). | DIY Safe |
Operational Fault | Transposed electrical connections (reversed polarity). | Disconnect power immediately. Correct the wiring at the terminal (red to positive, blue to negative) and ensure the supply line is properly fused (5 - 10 A). | DIY Safe |
Frequently Asked Questions
Q: Can this boiler be installed in boats?
No, this standard model is not approved for installation in boats. Truma supplies a specific DVGW-tested boat water heater for marine applications.
Q: Can I operate the water heater without water in the tank?
No, never operate the water heater without water contents. However, it is permissible to briefly check the electrical function while empty.
Q: What type of water pumps can be used with this boiler?
All pressure and submergible pumps up to 2.8 bar can be used. If using submergible pumps, a non-return valve must be fitted between the pump and the first branch.