Error Code 90 (Pro Series Models)
The Error Code 90 indicates an airflow or combustion abnormality. (Error Code 10 is also troubleshot with the same methods)...
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Error Code 91 (Pro Series Models)
An error code 91 means incorrect gas type. For new installs: 1. Check for gas type, gas orifice and gas... -
Error Code 94 (Pro Series Models)
An error code 94 means the exhaust temperature is too high (condensing units). One of the benefits of installing a...
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