Ideal fault diagnostics

Ideal Logic

The Ideal Logic + Heat boiler failing to ignite, despite new spark generator and electrode, 37mbar standing pressure dropping to 34mbar on ignition attempt, and 233V DC to the gas valve, points towards a persistent ignition lockout. Common causes for ignition lockout (often indicated by an L2 fault code on Ideal Logic boilers) include issues with gas supply, gas valve, flue/air intake, condensate, flame rectification, or the PCB. Given the steps already taken, further investigation into gas valve resistance, flame rectification, and potential PCB faults is crucial.

Published 16 days ago

Ideal Logic MAX Combi C24 — Overheat Lockout 1/4

The Ideal Logic MAX Combi C24 is displaying an 'Overheat Lockout' fault (sometimes referred to as L1), with no heating or hot water and the pressure gauge at 0 bar. This fault indicates the boiler temperature has exceeded safe operating limits, shutting down as a safety precaution. Common causes include low water pressure, poor circulation, air in the system, a blocked heat exchanger, or closed valves. The 0 bar pressure reading is a critical factor, as the boiler will not operate below 0.3 bar. There is also a safety recall for some Ideal Logic 2 Combi and System Boilers (including MAX models) regarding a risk of fire due to dry operation. It is crucial to check if the specific boiler is affected by this recall.

Published 28th June 2026

Ideal Vogue Max Combi 26 — IGNITION LOCKOUT

The Ideal Vogue Max Combi 26 displaying 'IGNITION LOCKOUT' indicates that the boiler has failed to ignite after several attempts and has entered a safety lockout mode. This is a common safety feature to prevent dangerous situations. The boiler will not make any noises, provide hot water, or heating until the fault is cleared and the system is reset. Common causes include issues with the gas supply, a blocked condensate pipe, or faulty ignition components.

Published 10th April 2026