LOA 21 Landis & Gyr Control Box
If your unit is faulty, please CONTACT US with a view to repair it.
We may have a unit in stock we can supply as an advanced replacement, or you can send us the faulty unit if it can be repaired. After we have repaired it, we will return it to you. The Control Box is the component that Controls the firing sequence of the boiler and maintains the operation.