If your appliance is ‘Beeping’ it may be because the battery coolant loop is low and needs topping up. The Luthmore App may also display a 403 fault code.
To check the coolant status:
1. Open the Luthmore App and navigate to Setup > Boiler Settings > Coolant Level
- The coolant status should say ‘OK’ If not then you should Top up the coolant loop
Image: Coolant Level
To top up the coolant loop:
1. Locate the metal ‘Valve Tool’ and Valve Ports located underneath the product and marked with 1, 2, 3 and 4 labels
Image: Valve Tool
2. To fill the coolant loop, insert the ‘Valve Tool’ into Port 3 and rotate clockwise to ensure that port is finger tight
3. Insert the ‘Valve Tool’ into Port 4 and rotate clockwise to ensure that port is finger tight
Image: Ensure that Port 3 and Port 4 are closed
4. Turn mains water on and open any external isolator valves on the mains water inlet / hot water outlet
5. Test that water flows through the boiler by opening a household hot tap and checking for flow
6. Visually check for any leaks present in the hot water system
7. Insert the valve tool into Port 2 and turn anticlockwise for 3 full revolutions
8. Insert the valve tool into Port 1 and turn anticlockwise for 3 full revolutions
Image: Open Port 2 and Port 1
NB: You should hear the coolant system start filling with water. If not, check that ports 2 and 1 are open as described above.
9. Once water starts to run from the discharge pipe the coolant loop is filled and ports 1 and 2 can be closed.
10. Turn the valve tool in Port 1 clockwise until finger tight
11. Insert the valve tool in, once water starts to run from the discharge pipe the coolant loop is filled and ports 1 and 2 can be closed.
12. Turn the valve tool in Port 1 clockwise until finger tight
13. Insert the valve tool into Port 2 and turn clockwise until finger tight to Port 2 and turn clockwise until finger tight
If this does not resolve the issue, please contact Customer Support on 01249 596588 or email help@luthmore.com