Hobby Caravans Owner's Handbook (2026)
Official technical documentation and workshop diagnostics for Hobby Caravans Owner's Handbook (2026).
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
x_x_x_x | ETS Plus LED blinking green (fast): Brake intervention or auto-test | Possible to continue driving. - (No action required) | DIY Safe |
x___x___ | ETS Plus LED blinking green (short pulses): In power-saving mode | Possible to continue driving. After driving for approx. 3 seconds, the system will switch to ready mode. | DIY Safe |
xxx__xxx__ | ETS Plus LED blinking green (slow): System or brakes too hot | Possible to continue driving. Continue to drive with care. After 120 seconds, the cooling system will switch to ready mode. | DIY Safe |
_x_______ | ETS Plus LED blinking red light: Electric supply fault (e.g. loose contact or voltage too low) Possible Cause: Loose contact or voltage too low | Continue to drive prudently. Check the (plug-in) cabling. Unplug the system for 20 minutes, then plug it in again. If this does not help: contact a dealer/authorised specialist. | DIY Check / Tech Fallback |
_x_x_____ | ETS Plus LED blinking red light: Mechanical fault (e.g. no brake cable connected/ brakes badly worn out/ system installed incorrectly) Possible Cause: No brake cable connected, brakes badly worn out, or system installed incorrectly | Continue to drive prudently. Visual inspection of brakes/assembly of ETS Plus/check that braking system is properly adjusted. Unplug the system for 20 minutes, then plug it in again. If this does not help: contact a dealer/authorised specialist. | DIY Check / Tech Fallback |
_x_x_x___ | ETS Plus LED blinking red light: Error in the central unit (e.g. handbrake is on/ brake rigging preloaded during assembly) Possible Cause: Handbrake is on or brake rigging preloaded during assembly | Continue to drive prudently. If necessary, release the handbrake (overrunning equipment should be fully extended). If necessary, check that the brake rigging is properly adjusted. Unplug the system for 20 minutes, then plug it in again. If this does not help: contact a dealer/authorised specialist. | DIY Check / Tech Fallback |
N/A | ETS Plus LED does not light up: ETS Plus is inactive | Continue to drive prudently. Unplug 13-pin caravan cable from tow vehicle. Visual inspection of plug and contacts. Check that there is steady plus on the socket. Plug in 13-pin caravan cable to the tow vehicle. If this does not help: contact a dealer/authorised specialist. | DIY Check / Tech Fallback |
N/A | Fresh water tank filling level is very low | The outer left LED on the bar will start to blink. | DIY Safe |
N/A | Battery charging status is very low | The outer left LED on the bar will start to blink. | DIY Safe |
N/A | Light flickers when set to the lowest dimmed level Possible Cause: Technical reasons due to the lowest dimming level | If this bothers you, please increase the brightness of the light. | DIY Safe |
N/A | The HobbyConnect app cannot be found in the store. | Check the settings on the device; write HobbyConnect as one word and not two. Check the app settings in the respective country. | DIY Safe |
N/A | App connection exists, but elements in the vehicle do not react to switching via HobbyConnect. | Check the power supply; if necessary, disconnect it briefly. Contact your dealer. | DIY Check / Tech Fallback |
N/A | Bluetooth connection does not work for HobbyConnect. | Check the settings on your mobile device to ensure that Bluetooth has been activated. Ensure the distance to the vehicle is not too great. | DIY Safe |
N/A | Refrigerator door can no longer be closed Possible Cause: The door handle on the open side of the door is blocked | Follow the device manufacturer’s operating instructions to unblock the handle. | DIY Safe |
N/A | Noises occur while towing your caravan Possible Cause: 1. a painted (dacromet coated) ball on the tow vehicle; 2. A galvanized or varnished tow ball on the tow vehicle; 3. A damaged, rusty or dirty tow ball on the tow vehicle; 4. Dirty or worn out friction pads in the hitch; 5. the towbar or brake rod in the linings of the overrunning equipment are running dry | For causes 1, 2, 3, and 4, please refer to the sections 'Tow ball on towing vehicle' and 'Hitch'. For cause 5, use the lubricating nipple to grease the bushings, remove the gangway bellows and grease the exposed tow bar, and clean the removable tow ball on the locking mechanism and grease it again (see separate operating instructions for the removable tow bar). | DIY Safe |
W 42 H | Truma CP plus control panel displays a warning icon (heating system operating parameter out of range) Possible Cause: An operating parameter of the heating system has reached an undefined status; the device continues to operate. | Use the control knob/pushbutton to select the warning icon and press it to read out the current warning code (format: W = Warning, code number, H = Heating). If the cause has been eliminated, press the control knob/pushbutton again to return to setting mode. If the cause has not been eliminated, press the reset button — the warning will remain displayed and the control panel will stay in a warning state, but other connected devices can still be operated. | DIY Safe |
E 112 H | Truma CP plus control panel immediately goes to Malfunction mode and displays a malfunction error code Possible Cause: A genuine malfunction has occurred in the heating system (format: E = Malfunction, code number, H = Heating). | If the cause has been eliminated, press the control knob/pushbutton — the corresponding device will restart. If the cause has not been eliminated, press the reset button; the malfunction may recur (allow a few minutes due to internal lag in the connected devices) and the control panel will return to Malfunction mode. Other connected devices can still be operated. | DIY Safe |
Frequently Asked Questions
Q: How do I clean the cover of the children's bed cushion?
There is a Velcro fastener on the children's bed cushion, enabling you to remove the cover and wash the cushion.
Q: How do I retighten the tension spring on a blind if it loses tension?
Use a flat screwdriver to retighten the tension spring on the blind. Insert the screwdriver and turn it clockwise one or two revolutions. Check the tension and repeat this process until the desired tension has been reached.
Q: How do I activate Bluetooth pairing mode on the control panel?
Press the Bluetooth key for approx. 2 seconds. A blue chaser light will appear on the control panel, which goes off automatically after 2 minutes or when the Bluetooth connection has been completed.
Q: How do I empty the fresh water tank?
Unscrew and remove the overflow pipe in the fresh water tank, and unscrew the cap on the cleaning port of the fresh water tank.
Q: How do I reset the crash sensor on the DuoControl CS gas regulator?
Press firmly on the yellow reset button, turn it lightly in a clockwise direction and hold for 5 seconds until it stays in the 'Ready' position. If unsuccessful, use the Torx T20 to assist turning in a clockwise direction.