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Verified boiler fault-code guides
Choose a supported model and code to read the catalogue entry and its source documents.
Ideal · Logic System2
- Ideal F01F01 indicates low water pressure.
- Ideal F02F02 indicates flame loss.
- Ideal F03F03 indicates fan fault.
- Ideal F04F04 indicates flow thermistor.
- Ideal L04L04 indicates flow thermistor.
- Ideal F05F05 indicates return thermistor.
- Ideal L05L05 indicates return thermistor.
- Ideal F06F06 indicates outside sensor failure.
- Ideal F07F07 indicates low mains voltage.
- Ideal F09F09 indicates unconfigured pcb.
- Ideal L09L09 indicates unconfigured pcb.
- Ideal L01L01 indicates flow temperature overheat or no water flow.
- Ideal L02L02 indicates ignition lockout.
- Ideal L06L06 indicates false flame lockout.
- Ideal L0CL0C indicates 5 boiler resets in 15 minutes.
- Ideal L0dL0d indicates blocked flue/condensate.
- Ideal F0UF0U indicates flow/return differential > 50°c.
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