Noritz error codes

Every Noritz guide on FixCodes, grouped by appliance.

🚿 Tankless Water Heater

• 11 Noritz Error Code 11: Ignition Failure (Meaning, Causes, Fixes)
• 12 Noritz Error Code 12: Flame Loss (Meaning, Causes, Fixes)
• 90 Noritz Error Code 90: Combustion Abnormality (Meaning, Causes, Fixes)

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