The LCD display on the instant hot water tank displays the set and current temperature. However, when there is a fault, it can display an error code. These can help you to identify the issue and the correct way to fix the fault.
E3 - indicates water shortage protection. When the water level in the inner tank is below the minimum required level.
Solution: Ensure all isolator valves are fully open and there are no kinks or tight bends in the pipework. Run at least 2 litres of water through the tank.
If the above does not work and the unit continues to show E3, is could be a dry burn switch problem and you will need to contact our Customer Care team on 0800 195 1602.
E7 - indicates a loose electronic connection in the system.
Solution: Ensure the power cable from the plug has not come loose. Ensure that the data cable from the tap is connected and secure.
If the above does not work and the unit continues to show E7, you will need to contact our Customer Care team on 0800 195 1602.
E8 - Indicates the tank is overboiling possibly due to scale build-up.
Solution: Draw off at least 2 litres of water to reduce the temperature in the tank. Adjust the water temperature on the LCD display to a lower setting. Check the aerator for scale build-up (see Maintenance section). You may also need to descale the tank.
E9 - Indicates the water temperature is too low (below zero).
Solution: You will need to increase the ambient temperature in the kitchen. This will help to defrost the water in the pipes and ensure a consistent flow through the tank.