What It Means
Horsepower conflict between blower motor and memory card data.
Rheem Furnace
Rheem Furnace Error Code d6
Troubleshooting guide for the Rheem Furnace system fault d6.
Possible Causes
- Blower motor horsepower mismatch.
- Incorrect motor or memory card installed.
- Incompatible replacement control board.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
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Full Diagnosis
Horsepower conflict on memory card.
All Recorded Causes
Blower motor horsepower does not match model data, wrong blower motor installed, wrong memory card installed, or incorrect replacement furnace control/model data.
Verify Before Replacing Parts
- Confirm the exact Rheem model family and furnaces context before acting on a generic code description.
- Confirm filter condition, blower operation, and coil cleanliness before replacing any controls — start by ruling out whether blower motor horsepower does not match model data, wrong blower motor installed, wrong mem….
- Measure airflow-related readings that match the symptom, such as temperature split or static pressure, and check whether the next candidate on the list.
- After the correction, run the system long enough to confirm the furnaces fault does not return under normal load.
Still unsure about this fault?
ACLogics walks you through Rheem Furnace diagnostics step-by-step — so you confirm the cause before swapping parts.
