BoilerFaultCodesIdeal FD Fault Code
The Ideal FD fault code means: your boiler has stopped heating because water is not moving through the system properly.. It appears on 11 Ideal models in our database.
Technical description: No water flow
What causes the Ideal FD fault?
This fault occurs when the boiler's internal sensors detect that water isn't moving through the unit quickly enough to safely carry heat away. The most common reason is a failed circulation pump or a blockage in the central heating pipes, such as built-up sludge or a closed valve. Because the water stays still, it would overheat the heat exchanger, so the boiler shuts down as a safety precaution.
This issue is more frequent in autumn when the heating is turned back on after a long summer break, as internal pump parts can seize up from lack of use.
DIY fix possible
Check that your home's water pressure gauge is between 1 and 1.5 barOpen all radiator valves and ensure no radiators are blocked by airRestart the boiler by pressing the 'Reset' button
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ideal models that show the FD fault code
Click a model for the full fault code list and model-specific repair notes.
- Compact Repair: £100-280
- Compact HE Repair: £100-£350
- Concorde Repair: £120-£350
- Esprit Repair: £120-350
- Logic Max & Logic Plus Repair: £100-£350
- Logic Max Heat Repair: £100-£350
- Logic Max Heat 2 Repair: £100-£350
- Logic Max Plus Repair: £100-£350
- Mexico Repair: £150-£350
- Sprint Repair: £100-£350
- Vogue Repair: £120-£350
Source
Ideal FD 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