BoilerFaultCodesIdeal 14.6 Fault Code
Also written as 146 — same fault.
The Ideal 14.6 fault code means: your boiler has detected that the water pressure inside the heating system is too low to operate safely.. It appears on 1 Ideal model in our database.
Technical description: 14.6
DIY fix possible
Locate the external filling loop, which is a silver braided hose connected to your boiler pipes.Open the small valves at either end of the loop to allow water into the system while watching the pressure gauge.Close the valves firmly once the needle on the gauge reaches between 1.0 and 1.5 bar, then restart the boiler.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like 14.6: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Ideal models that show the 14.6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ideal 14.6 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 7 July 2026