BoilerFaultCodesAtmos 6 Fault Code
The Atmos 6 fault code means: your boiler is failing to light the gas or cannot identify that a flame is present, meaning your heating and hot water will not work.. It appears on 4 Atmos models in our database.
Technical description: Flame detection fault — replace ignition cable and spark probe; replace ignition unit; replace controller
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 →Avoid the next call-out bill
A cover plan would handle faults like 6: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Atmos models that show the 6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Atmos 6 fault code information on this page is sourced and cross-checked against the official Atmos service / installation manuals for each affected model.
- Atmos Intercombi HE32 manual (PDF)
- Atmos Interopen HE22 manual (PDF)
- Atmos Intersystem HE26 manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026