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Error codes by model: manufacturer manuals
The official list of error codes for each model, taken from the manufacturer’s documentation: exact meaning, causes, and recommended solutions.
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Atlantic All Atlantic codes ›
Chaffoteaux All Chaffoteaux codes ›
Air-to-waterChaffoteaux Arianext Compact MView codes ›Air-to-waterChaffoteaux Arianext Compact SView codes ›Air-to-waterChaffoteaux Arianext Flex MView codes ›Air-to-waterChaffoteaux Arianext Flex SView codes ›Air-to-waterChaffoteaux Arianext Plus MView codes ›Air-to-waterChaffoteaux Arianext Plus SView codes ›
Daikin All Daikin codes ›
De Dietrich All De Dietrich codes ›
Mitsubishi Electric All Mitsubishi Electric codes ›
Saunier Duval All Saunier Duval codes ›
This model doesn’t have a guide here yet. Give Cody the code and brand, and it will search the manufacturer’s documentation.
Don’t know the exact model?
Start with the brand: each manufacturer’s page gathers all known codes, across every lineup.
Where can you find your heat pump’s model?
The exact reference is shown on the nameplate, a silver label stuck on the side or back of the outdoor unit, and often also under the cover of the indoor unit or hydraulic module. It’s also listed on the installation invoice and in the guide provided by the installer.
Two units from the same brand can display the same code with a different meaning: at Atlantic, a code from the Alfea lineup (air-to-water) doesn’t mean the same thing on a Takao air conditioner (mini-split). Always make sure the guide matches your lineup. Not sure? Cody makes the difference for you.
Does the code keep coming back despite your checks?
A qualified professional near you, with a no-obligation quote.