Amana AMVM970803BN Error Code Eb5: Circulator Blower Motor Failure

What Does Code Eb5 Mean?

Error code Eb5 on the Amana AMVM970803BN indicates the circulator blower motor has experienced a critical failure. The fault triggers under three conditions: the motor fails to start 10 consecutive times, the motor shuts itself down due to an over- or under-voltage condition, or the motor's power module reaches an over-temperature condition.

When the motor fails to start 10 times in a row, it typically means the motor wheel or shaft is mechanically obstructed and the motor cannot overcome the resistance to begin rotating. An over- or under-voltage shutdown means the incoming power supply voltage is outside the nameplate-specified range, causing the motor's internal protection circuitry to shut it down. An over-temperature condition on the power module indicates the motor is running too hot, often due to sustained high load from restricted airflow.

A technician must check the circulating blower for physical obstructions, verify the blower shaft rotates freely, inspect and repair or replace the blower motor or wheel as needed, and measure the voltage to the furnace to confirm it is within the nameplate-specified range.

Common Causes

When to Call a Professional

Contact a licensed HVAC technician if:

• Eb5 displays — inspect the blower wheel for obstructions and verify the shaft rotates freely; motor or wheel replacement may be required
• If the incoming voltage to the furnace is outside the rated range, an electrician is needed to correct the power supply
• A failed or thermally-damaged blower motor must be replaced by a qualified HVAC technician

✓ Verified against manufacturer service manual — March 2026