Truma Combi D 6 E
Official technical documentation and workshop diagnostics for Combi.
Technical Specifications
Operating Voltage12V DC / 230V AC
Power ConsumptionHeater + boiler 1.8 – 4 A (Stand-by approx. 0.001 A); 230V: 3.9 A (900 W) or 7.8 A (1800 W)
Gas Or PressurePump pressure max. 2.8 bar, System pressure max. 4.5 bar
Fuse RatingsAppliance fuse: 10 A slow-acting (T 10 A), Burner fuse: 20 A slow-acting (T 20 A), 230V fuse: 10 A slow-acting
Dimensions Cutout450 x 525 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 water system according to maintenance instructions. | DIY Safe |
N/A | Water running away – boiler cannot be filled. Possible Cause: Safety/drain valve open. | Close safety/drain valve. | DIY Safe |
N/A | Boiler cannot be drained, even though the safety/drain valve is open. Possible Cause: Safety/drain valve draining socket blocked. | Check opening for soiling (slush, ice, leaves, etc.) and remove if necessary. | DIY Safe |
N/A | Water dripping/flowing from drainage socket of safety/drain valve. Possible Cause: Water pressure too high. | Check pump pressure (max. 2.8 bar). If the boiler is connected to a central water supply, use a pressure reducer to prevent pressures higher than 2.8 bar. | DIY Safe |
N/A | After the heater has been switched off, the FrostControl opens. Possible Cause: At temperatures of less than approx. 3 °C the FrostControl opens automatically. | Switch heater on. Without heater operation, the FrostControl cannot be closed again until the temperature reaches approx. 7 °C, or use the optional heating element for FrostControl. | DIY Safe |
N/A | The FrostControl can no longer be closed. Possible Cause: Temperature at FrostControl less than approx. 7 °C or rotary switch not set to operation. | Switch heater on to warm the compartment until the temperature reaches approx. 7 °C, turn the rotary switch to operation, and press the pushbutton until it engages. | DIY Safe |
N/A | Large amounts of smoke on the cowl for more than 1 minute after the equipment is started. Possible Cause: Fuel supply malfunction, improper installation, or limited combustion air infeed. | Fire hazard! Do not use the equipment any longer. Contact an authorized service agent. | Professional Intervention Required |