BoilerFaultCodes 30 40 50 60 70 80 (mm ll mm ll ll mm)
Fan off but air pressure switch fails to return to off position.
Chaffoteaux Britony Combi SE 100 Fault codes & diagnostics
13 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Combi Natural Gas 29 kW 2001-2007 Discontinued
GC Number 47-980-17
Replaced by: Britony Condens
Download the Chaffoteaux Britony Combi SE 100 manual
PDF
Versions & GC numbers
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →
Severity at a glance
Each cell = one fault code. Hover to identify. 13 Unrated
Which version do you have?
The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 47-980-17 | Britony Combi SE100 Atac 28FF | 2001–2007 |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
Just want the most common Chaffoteaux Britony Combi SE 100 faults?
The top 6 problems in plain English — with causes, DIY checks and repair costs.
Fault codes
All 13 documented codes
Tap any card for details
30 40 50 60 70 80 (mm ll mm ll mm ll)
Fan on but does not activate air pressure switch.
30 40 50 60 70 80 (mm ll mm mm mm ll)
Low water pressure in the Central Heating circuit.
30 40 50 60 70 80 (mm mm ll ll mm mm)
Central heating thermistor flow faulty (short circuit).
30 40 50 60 70 80 (mm mm ll mm ll ll)
Central heating thermistor flow faulty (open circuit).
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Domestic hot water thermistor faulty (short circuit).
30 40 50 60 70 80 (mm mm ll mm mm ll)
Domestic hot water thermistor faulty (open circuit).
30 40 50 60 70 80 (mm mm mm ll ll mm)
Antifrost mode on (burner and pump in operation).
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Antifrost mode on (pump in operation).
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Ionisation printed circuit board faulty.
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No flame detection.
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Overheating defect without lock out.
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Overheat sensor switch open.