What does L9 mean on an ideal boiler?
What does L9 mean on an ideal boiler? L9 is a low overheat, H9 is the high overheat with either i would suspect a blockage or lack of water flow. How do I reset my ideal logic boiler? To reset boiler, turn the mode control knob (D) to reset position and immediately turn knob back to required setting. The boiler will repeat the ignition sequence. If the boiler still fails to light consult a Gas Safe Registered Engineer or in IE a Registered Gas Installer (RGII). Where can I find the ideal logic combi boiler? Otherwise, we recommend getting in...