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Find out what water heater error codes mean and what may be causing the fault. Follow practical checks and troubleshooting advice to restore hot water safely.
A display code points to a problem, not necessarily a faulty part. Its meaning depends on the exact heater model.
The same warning can mean different things across ranges. Your model determines what to check and when to stop.
A startup lockout does not identify a faulty part. The model and whether the warning returns determine the next step.
Understand the ignition warning, distinguish it from other codes and recognise the limits of safe checks at home.
The exact model and displayed fault help explain the shutdown and prevent unnecessary replacement parts.
The model determines what CF means. Resetting the heater does not prove that its flue system is working safely.
A reset does not confirm a repair: the warning may require checks on the flue installation and heater settings.
The model determines what the warning means. Check accessible controls without assuming a particular part has failed.
EA usually means no flame is detected. The model and the timing of the lockout help guide the diagnosis.
An overheat warning does not identify a failed part. The heater model and symptoms determine the safest next steps.
The same warning does not always mean the same fault. Your heater model determines what to check and when to stop.
An empty tank is not the same as an ignition fault. The model determines what the warning means and how to respond.