Ideal · Logic Combi ESP1
F7
Logic Combi ESP1 — models 24 / 30 / 35
What F7 means
Low mains voltage.
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.
Safe check: Do not reset the boiler. Contact a qualified electrician or your electricity provider, as the guide directs.
Gas Safe registered engineer: The guide directs you to a qualified electrician or your electricity provider for low mains voltage. For boiler-side investigation, contact Ideal or arrange a Gas Safe registered engineer.
Official source: Ideal Logic Combi ESP1 User Guide · UIN 222353 A04 (03/2023) · §8 Fault Codes, code F7, p. 8