Ideal C80ff & C95ff Fault Codes

Combi Natural GasLPG 23.5-28 kW 2001-2005 Discontinued

GC Numbers: 47-348-1847-348-19

Replaced by: Isar HE

The fault code is already on your display

Note it down before pressing reset — resetting clears the code immediately. How to read fault codes →

Most common fault codes

Code	Severity	Plain English	DIY
A	High	Your boiler has failed to ignite or stay lit, meaning the system has shut down for safety and cannot provide any heat or hot water.	Yes
B	Medium	Your boiler is providing hot water as usual, but the central heating is failing to turn on, likely due to a communication issue between your controls or a mechanical part inside.	Yes
C	Medium	Your boiler is providing central heating as normal, but the system is failing to detect when you turn on a hot tap.	Engineer

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