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281 error codes from 17 brands, each with safe first checks.

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A.O. Smith8 codes · tank water heaters Balboa10 codes · hot tub controls Bosch17 codes · dishwashers GE Appliances22 codes · dishwashers, ranges and ovens Gecko6 codes · hot tub controls Google Nest11 codes · thermostats Hayward15 codes · pool heaters, salt chlorinators, variable-speed pool pumps Heat & Glo7 codes · gas fireplaces Jandy8 codes · pool heaters LG41 codes · washers, dryers, dishwashers Mitsubishi Electric17 codes · mini-splits Navien15 codes · tankless water heaters Pentair16 codes · pool heaters, variable-speed pool pumps, salt chlorinators Proflame (SIT)3 codes · gas fireplaces Rinnai18 codes · tankless water heaters Samsung37 codes · washers, dryers, dishwashers Whirlpool30 codes · washers, dryers, dishwashers

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Part of the Helpline family: expert help for fireplaces, hot tubs, pools and error codes. Sister sites: Fireplace Helpline · Hot Tub Helpline · Pool Helpline

Error code meanings come from manufacturer manuals and support pages, but codes can differ by model and year. Always confirm with your owner's manual or the label inside your unit. Our information and AI helper are for general guidance only and are not a substitute for a licensed technician. Gas, refrigerant, combustion and line-voltage work must be done by a qualified professional. In an emergency, call 911.

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