Ideal · Logic Code Combi ESP1
L1 boiler fault code
Logic Code Combi ESP1 — models 26 / 33 / 38
Get a Gas Safe engineer
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Renting? Report it to your landlord or housing provider first. They are responsible for gas safety and boiler repairs, and the repair should not cost you.
What L1 means
The manufacturer describes L1 as flow temperature overheat or no water flow.
Safe check
Record the exact display message and do not attempt an internal check. Follow only the user guide restart instruction shown for this message.
When to contact an engineer
The message remains or returns after the user guide action; contact Ideal or arrange a qualified heating engineer.
Safety notice
A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, anyone feels unwell, or there is an unsafe flame, leave and call 0800 111 999 from outside.
Source and provenance
- Logic Code Combi ESP1 User Guide · UIN 222364 A04
user guide
10/2023 · UIN 222364 A04