Truma Combi D E Next Generation
Official technical documentation and workshop diagnostics for Combi D E.
Technical Specifications
Operating Voltage12V DC / 230V AC
Power Consumption0.4 – 8.1 A (12V), 900W / 1800W (230V)
Gas Or Pressuremax. 2.8 bar (Pump pressure), max. 4.5 bar (System pressure)
Dimensions Cutout450 x 510 x 300 mm
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | Water taking an extremely long time to heat up Possible Cause: Water container furred | Descale the water system in accordance with the maintenance instructions. | DIY Safe |
N/A | Water running away – water container cannot be filled Possible Cause: Safety / drain valve open | Close the safety / drain valve. | DIY Safe |
N/A | Water container cannot be emptied, although the safety / drain valve is open Possible Cause: Safety / drain valve drainage socket blocked or water pipe frozen | Check opening for dirt such as slush, ice, or leaves and remove if necessary, or thaw the water pipe. | DIY Safe |
N/A | Water dripping / flowing from the drainage socket of the safety / drain valve Possible Cause: Water pressure too high | Check pump pressure to ensure it does not exceed 2.8 bar. If connected to a central water supply, install a pressure reducer. | DIY Safe |
N/A | After the heater has been switched off, the FrostControl opens Possible Cause: At temperatures below approximately 3 °C the FrostControl opens automatically | Switch the heater on. If the heater is not in operation, the FrostControl can be closed again only when the temperature is about 7 °C or higher, or use a heating element for FrostControl. | DIY Safe |
N/A | The FrostControl can no longer be closed Possible Cause: Temperature at the FrostControl is below approximately 7 °C, rotary switch not set to Operation, or FrostControl is faulty | Switch the heater on to raise the temperature above 7 °C, turn the rotary switch to Operation and press the pushbutton until it engages. If faulty, the valve must be replaced by an authorized service agent. | DIY Check / Tech Fallback |
N/A | Large amounts of smoke at the wall cowl for more than 1 minute after the appliance is started Possible Cause: Fault in the fuel supply, improper installation, combustion air infeed restricted | Stop using the appliance immediately due to fire hazard and contact customer service or an authorized service agent. | Professional Intervention Required |