A caravan boiler fault message only makes sense when it is tied to the exact appliance model, controller and manufacturer manual. A model number such as Alde 3010, 3020 or 3030 is not itself an error code. Record the full message and use the correct manual; do not turn a generic search result into a DIY diagnosis.
Safety comes first
Do not remove a gas-appliance casing, alter an LPG connection, work on a flue or attempt repairs from an online guide. For a gas smell or suspected carbon-monoxide concern, leave the area and use the correct emergency route for the fuel supplier or emergency service.
Start with the exact appliance and controller
Before searching a phrase such as 'Alde 3020 fault codes' or 'Truma flashing red light', identify the appliance model and the controller/display. Different models and controller versions can use different wording, symbols and warning behaviour.
Alde Compact 3010, Compact 3020 and Compact 3030 are appliance/model families, not three universal fault codes. For example, the Alde Compact 3020 HE user instructions list named messages such as Gas failure, Low battery and Overheat red fail within that model's own context.
What to record from a safe distance
Take notes or a clear photo of the external display if it can be done safely. The aim is to help the correct person identify the manual and decide the next step — not to diagnose the appliance from a single code.
- The complete message, number, icon colour or warning pattern shown.
- The appliance make, model and controller/display model, if known.
- Whether space heating, hot water or both are affected.
- Whether the issue followed a power cut, empty LPG cylinder, low battery indication or other visible change.
- Whether the message returns after one normal user-instruction reset, where the manual permits one and there is no gas smell or carbon-monoxide concern.
What not to do with a fault message
Do not remove a casing, enter installer settings, inspect wiring, reset repeatedly, work on LPG connections or change system pressure because of a generic code explanation. A display message can be a symptom, a safety warning or a controller-specific notice; the correct response depends on the exact product information.
If there is a gas smell, suspected carbon monoxide, scorching, soot or a safety concern, stop using the appliance and follow the relevant emergency process rather than troubleshooting it online.
How to use this information when requesting help
Provide the recorded message, appliance details, a brief description of what has changed and the caravan or park-home location. This page does not promise BPCE repair coverage or attendance; it helps you provide accurate information before asking whether the relevant work can be considered.
Questions people ask
Is Alde 3020 a fault code?
No. Alde Compact 3020 is an appliance/model family. The relevant fault information is the exact message shown on the correct controller or display and the corresponding official manual edition.
What does a flashing red light on a Truma system mean?
There is no safe universal answer. Warning lights can vary by appliance and controller. Identify the exact model and controller, consult its user instructions and do not open the appliance or work on LPG connections.
Should I keep resetting a caravan boiler fault?
Do not keep resetting an appliance. If the exact user instructions allow one normal reset and there is no gas smell, carbon-monoxide concern or safety warning, follow that instruction once. If the message returns, stop and seek appropriate help.
Sources used for this guide
- Alde Compact 3020 HE operating instructions
- Gas Safe Register: gas safety for motorhomes and caravans
- Gas Safe Register: home boiler and appliance guidance
Published and last substantively updated: 26 October 2026. External sources are provided for context; always follow the exact instructions and terms that apply to your own equipment, site and agreement.