Auto-Trail Frontier Owner's Handbook (2026)
Official technical documentation and workshop diagnostics for Auto-Trail Frontier Owner's Handbook (2026).
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | Smoke alarm emits a short beep once a minute Possible Cause: Battery is at the end of its life | Replace the battery immediately. | DIY Safe |
N/A | LED indicator on smoke alarm does not flash every minute Possible Cause: Battery is completely flat | Replace the battery immediately. | DIY Safe |
N/A | Carbon monoxide detector emits a single audible chirp once per minute for up to 30 days Possible Cause: Settings of sensor/circuitry found to be incorrect or batteries have become low | Replace the batteries (and ensure unit is within its 10-year lifetime). | DIY Safe |
N/A | Water pump runs on for more than 5-10 seconds after closing all taps Possible Cause: Possible leak in the system | Check the system immediately for leaks. | DIY Safe |
N/A | Flame lifting away from the burner on gas appliances Possible Cause: Pressure is too high | Recheck the regulator, cylinders and pipes and adjust as necessary. | DIY Safe |
N/A | Yellow flame causing soot on gas appliances Possible Cause: Pressure is too low | Recheck the regulator, cylinders and pipes and adjust as necessary. | DIY Safe |
N/A | Aerated water from a tap Possible Cause: Leak on the suction side of the pump | Inspect and repair the leak on the suction side of the pump. | DIY Safe |
Frequently Asked Questions
Q: How do I connect the motorhome to a 230V mains supply?
Switch the charger power switch on the power supply unit (PSU) to 'OFF', connect the orange mains hook-up cable to the vehicle first and then to the mains supply, test the RCD operation using the test button, ensure all MCBs are in the 'ON' position, switch the PSU power switch to 'ON', and check that the reverse polarity indicator is not illuminated.
Q: How do I drain down the water system for winter storage?
Open the drain valves on both the freshwater and wastewater tanks, open and leave all taps inside the vehicle open (with mixer taps in the central position), open the internal drain valve to empty the water heater and pipework, allow the vehicle to drain for five minutes, and then run the pump briefly to ensure it is free of water.