Lillen has a 28 Liter Dual (Gas & 240V Electric) Hot Water System.
The hot water controls are located at the back of the motorhome on the left side next to the diesel heater control.
When connected to 240V external power use the left electric button. The whole button is lit when the hot water heater is operating on 240V.
It will reach a usable temperature in approximately 40 minutes and full temperature in 1 hour.
Turn on the gas switch and the light will flash rapidly (this takes roughly 20-30 seconds) until the gas lights.
The light will then remain constant, if the gas fails to light or the gas bottle has been changed the system may have air in the line so the it is designed to repeat three times to ensure that the flame sensor monitors the gas correctly.
If the gas fails or it senses a fault in the system it will turn off the gas and the light will flash at a constant rate until the switch is turned off to reset the unit.
The manufacturers operating instructions is available as a PDF download.