Ideal · Logic MAX System²
Overheat Lockout boiler fault code
Logic MAX System² — models S15 / S18 / S24 / S30
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What Overheat Lockout means
The manufacturer describes Overheat Lockout as overheat lockout.
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 MAX System² User Guide · UIN 237661 A01
user guide
10/2023 · UIN 237661 A01