BoilerFaultCodesIdeal 4.4 Fault Code
Also written as 44 — same fault.
The Ideal 4.4 fault code means: your boiler has detected a flame when it shouldn't be there, which usually means a internal component is stuck open or there is a fault with the electronics.. It appears on 8 Ideal models in our database.
Technical description: Flame On Before Gas Valve On
What causes the Ideal 4.4 fault?
This fault occurs when the boiler’s safety sensors detect a flame inside the burner before the gas valve has actually been told to open. The most common reason is a gas valve that is physically stuck open or leaking, though it can also be caused by a fault in the control board’s electronics that incorrectly senses electricity where there shouldn't be any.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ideal models that show the 4.4 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal 4.4 fault code information on this page is sourced and cross-checked against the official Ideal service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026