Ideal Classic SE9 RS Fault Codes

Regular Natural Gas 9.1 kW 2001-2005 Discontinued

GC Number: 41-392-11

Replaced by: Mexico 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
I3	High	Your boiler is not receiving any electrical power, which is why the lights are off and it isn't working.	Yes
Main burner does not light	High	Your boiler is failing to ignite the main gas flame, which means your heating and hot water will not work.	Engineer
Neon I3	Low	Your boiler is receiving power from the mains electricity and is currently in its normal standby mode.	Yes
Neon SG1	Low	Your boiler is currently trying to light the gas burner and will stop flashing once it successfully senses the flame.	Yes
No spark at ignition electrode	High	Your boiler is failing to light the gas flame, meaning your heating and hot water will not work.	Engineer
Overheat 'stat trip	High	Your boiler has become too hot and has automatically switched itself off to prevent any damage.	Yes
Pilot does not light	High	Your boiler is failing to ignite the small starter flame, which means the main burner cannot catch light to provide heating or hot water.	Engineer

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

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