HVACopediaGoodman · Air handler
Eb7 Blower motor missing shared data / failed to start 40 times
What the control is telling you
The motor does not have enough information to run properly, or it failed to start 40 times in a row.
Applies to: ComfortBridge communicating air handlers AVPTC**14 (B* revision board) and MBVC1201/1601/2001 modular blowers
Likely causes
- Control fault or wrong/missing shared data
Test and repair steps
- Verify the control is loaded with the correct shared data; reload with the BTSDL01 if needed.
- If data is correct and the fault persists, check the control and motor.
- Check the blower wheel turns freely, since repeated failed starts point to a mechanical bind.
Models that show this code
21 models in Goodman/Amana ComfortBridge AVPTC/MBVC
Other codes on the same units
- Eb3 Blower limiting on power, temperature or speed
- Eb4 Blower motor lost rotor control or high current
- Eb5 Blower motor failed to start 10 times
- Eb6 Blower shut down for voltage or power module temperature
- Eb9 Airflow lower than demanded
- EC1 Communication error with the outdoor unit
- Ed0 No shared data on the network
- Ed1 Invalid shared data
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Source: Goodman ComfortNet ASXC/GSXC/DSXC, ASZC/GSZC/DSZC, AVPTC/MBVC service manual, Air Handler Troubleshooting Matrix (B*) p.59-60. Summarized in our own words; check the original manual for your model.
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For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.