Common Intergas boiler error codes

With a rich history dating back to 1974, Maintracts Services has established itself as a leading provider of exceptional heating services.

Our team of expert heating engineers possesses extensive experience in dealing with Intergas boilers, offering a comprehensive range of services including installation, maintenance, and repair. In today’s blog post, we will delve into a topic that every Intergas boiler owner or technician should be well-versed in common Intergas boiler error codes.

These error codes can sometimes be confusing but worry not! We are here to provide you with valuable insights into what these error codes mean and how to effectively troubleshoot them.

Whether you’re a homeowner, landlord, or a heating professional, join us as we unravel the mysteries of Intergas boiler error codes and help you maintain optimal performance and reliability for your heating system.

Intergas Boiler Error Codes

Fault code	System behaviour
10, 11, 12, 13, 14	Sensor fault S1
20, 21, 22, 23, 24	Sensor fault S2
0.0	Low system pressure
0	Sensor fault after self check
1	Temperature too high
2	S1 and S2 interchanged
4	No flame signal
5	Poor flame signal
6	Flame detection fault
8	Incorrect fan speed
27	Shortcut outside sensor temperature
29, 30	Gas valve relay faulty

Intergas Xtreme and Xclusive Boiler Error Codes

Fault code	System behaviour	Possible solution / cause
3	Sensor defect	Heat exchanger sensor needs replacing.
F001	Temperature too high during central heating demand	Air could be in system, central heating system needs bleeding. There could be an error with the pump & it could need replacing.
F002	Temperature too high during domestic hot water (DHW) demand	The wiring of DHW sensor needs checking, possible breakage.
F003	Flue gas temperature too high	Heat exchanger needs checking for contamination.
F004	No flame during startup	Gas valve is closed. Condensation drain is blocked and ignition needs checking.
F005	Flame disappears during operation	Condensation drain could be blocked, the air supply duct and flue needs checking for possible recirculation or blockage of flue gases.
F006	Flame simulation error	Gas valve could need replacing or burner controller could need replacing.
F007	No or insufficient ionisation flow	Wiring of ionisation/ignition pin could have a breakage shut down and could need replacing.
F008	Fan speed incorrect	Fan cable needs checking, fan or burner controller could need replacing.
F009	Bunner controller has internal fault	Burner controller needs replacing.
F010, F011	Sensor fault	Possible issue with heat exchanger sensor, breakage or not connected properly.
F012	Sensor 5 fault	Wiring for flue gas sensor needs checking, possible breakage.
F014	Mounting fault sensor	Heat exchanger sensor is not mounted correctly and needs to be mounted properly.
F015	Mounting fault sensor S1	Central heating flow sensor is not mounted correctly and needs mounting properly.
F016	Mounting fault S3	Domestic hot water sensor is not mounted correctly and needs mounting properly.
F018	Flue and / or air supply duct is blocked	The flue and/or air supply duct could need cleaning.
F019	BMM error	Check the BMM wiring for breakages / BMM wiring could need replacing.
F027	Short circuit of outdoor sensor	Outdoor sensor could have a wiring issue, check and replace the outdoor sensor.
F028	Reset error	The reset button needs checking for unintentional operation e.g. cleaning of control panel. Burner controller might need replacing.
F029	Gas valve error	Gas valve needs checking for leakage / burner controller could need replacing
FO30	Sensor S3 fault	Check wiring of domestic hot water sensor for breakage or shutdown domestic hot water sensor – it could need replacing.
F031	Sensor fault S1	Check wiring of central heating flow sensor for breakage and shutdown. Check that weather central heating flow sensor is connected correctly.