Ideal · Independent+ Combi 24/30/35

FA

What FA means

Negative differential flow/return thermistor.

Find a Gas Safe engineer

A boiler fault code alone is not a gas or carbon-monoxide emergency. If you smell gas, a CO alarm sounds, or someone has possible carbon-monoxide symptoms, leave and call 0800 111 999 from outside.

Safe check: Record the displayed code. Do not open the boiler or inspect the pump, valves or internal water circuit.

Gas Safe registered engineer: The fault remains or returns after the user guide action; contact Ideal if the boiler is under warranty or arrange a Gas Safe registered engineer.

Official source: Independent+ Combi User Guide · §8 Fault Codes, printed p. 8