Truma CP plus VarioHeat control panel
Official technical documentation and workshop diagnostics for CP plus VarioHeat.
Technical Specifications
Operating Voltage8 V - 16.5 V DC
Power Consumptionmax. 65 mA (100% background lighting), 6.5 mA - 10 mA (stand-by), max. 3 mA (Off)
Dimensions Cutout92 x 103 x 40 mm
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
E 2 H | Flame not recognised / Heater fault Possible Cause: Gas cylinder empty | Replace gas cylinder | DIY Safe |
E 2 H | Flame not recognised / Heater fault Possible Cause: Gas cylinder or quick-acting valve in the gas supply line closed | Check gas supply and open valves | DIY Safe |
E 2 H | Flame not recognised / Heater fault Possible Cause: Gas pressure regulation system iced up | Use EisEx regulator heater | DIY Safe |
E 2 H | Flame not recognised / Heater fault Possible Cause: Butane content in the gas cylinder too high | Use propane (butane is unsuitable for heating, particularly at temperatures below 10 °C) | DIY Safe |
E 2 H | Flame not recognised / Heater fault Possible Cause: Combustion air infeed or exhaust outlet is sealed | Inspect openings for obstructions (slush, ice, leaves, etc.) and remove any obstructions | DIY Safe |
W 25 H | Overvoltage warning Possible Cause: Overvoltage > 16.4 V | Check the battery voltage and voltage sources such as the charger | DIY Safe |
W 26 H | Low voltage warning Possible Cause: Low voltage, battery voltage too low < 10 V | Charge battery and replace old battery if necessary | DIY Safe |
W 27 H | Air flow warning Possible Cause: Warm air outlets blocked, circulated air intake blocked, or end outlets EN closed | Remove blockage and open end outlets EN | DIY Safe |
W 28 H | Window switch warning Possible Cause: Window above cowl open (window switch) | Close windows | DIY Safe |
W 29 H | Risk of low voltage warning Possible Cause: Risk of low voltage, battery voltage too low < 10.4 V | Charge battery | DIY Safe |
W 255 H | Power supply or connection warning Possible Cause: Heater has no 12 V power supply or no connection between heater and control panel | Ensure 12 V power supply, connect heater and control panel. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |
E 8 A | Air conditioning system fault Possible Cause: IR receiver unplugged or cable broken | Check the connection of the IR receiver | DIY Safe |
E 17 A | Air conditioning system fault Possible Cause: Voltage drop at 230 V power supply | Check 230 V power supply | DIY Safe |
W 8 A | Air conditioning system warning Possible Cause: IR receiver unplugged or cable broken | Check the connection of the IR receiver | DIY Safe |
W 17 A | Air conditioning system warning Possible Cause: Voltage drop at 230 V power supply | Check 230 V power supply | DIY Safe |
W 101 E | E-Kit overvoltage warning Possible Cause: Overvoltage > 16.1 V | Check the battery voltage and voltage sources, such as the charger | DIY Safe |
W 102 E | E-Kit low voltage warning Possible Cause: Low voltage, battery voltage too low < 10.4 V | Charge battery and replace old battery if necessary | DIY Safe |
W 103 E | E-Kit air flow warning Possible Cause: Warm air outlets blocked or circulated air intake blocked | Check the individual outlet openings and remove the circulated air intake blockage | DIY Safe |
W 104 E | E-Kit voltage warning Possible Cause: No 230 V operating voltage or 230 V fuse defective | Restore 230 V operating voltage or replace 230 V fuse | DIY Safe |
W 255 E | E-Kit power supply or connection warning Possible Cause: Truma E-Kit has no 12 V power supply or no connection between Truma E-Kit and control panel | Ensure 12 V power supply, connect heater and control panel. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |