BoilerFaultCodesIntergas 14 Fault Code
The Intergas 14 fault code means: your boiler has detected a problem with its primary temperature sensor and has shut down as a safety precaution to prevent overheating.. It appears on 10 Intergas models in our database.
Technical description: Sensor fault S1
What causes the Intergas 14 fault?
This fault occurs when the boiler's main flow temperature sensor sends an incorrect or garbled signal to the control board, suggesting the sensor has failed or become disconnected. The most common reason is that the internal components of the sensor have worn out over time, or the electrical wiring connecting it to the brain of the boiler has developed a loose connection.
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 →Intergas models that show the 14 fault code
Click a model for the full fault code list and model-specific repair notes.
- Combi Compact Eco RF Repair: £90-160
- Combi Compact HRE 24/18 Repair: £90-160
- Combi Compact HRE 28/24 Repair: £90-160
- Combi Compact HRE 36/30 Repair: £90-160
- Combi Compact HRE OV Repair: £90-160
- Combi Compact HRE SB Repair: £90-160
- Compact HRE OV Repair: £100-£180
- Rapid 25 Repair: £100-£190
- Rapid 25 32 Repair: £100-£190
- Rapid 32 Repair: £100-£190
Source
Intergas 14 fault code information on this page is sourced and cross-checked against the official Intergas service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026