Goodman · Furnace

Eb9 Inadequate airflow

Medium severity Goodman/Amana *MVC96 (34.5 in. chassis)

What the control is telling you

Airflow is lower than what the control asks for. The furnace may run slow or stay on low stage when high stage is expected.

Applies to: GMVC96, GCVC96, AMVC96, ACVC96 (*BA, ComfortBridge)

Likely causes

Dirty filter
Restrictive or undersized ductwork

Test and repair steps

Turn off power before touching wiring or the board.
Check the filter. Clean or replace it.
Check ducts for blockage and open all registers.
Check duct size and fix or replace undersized duct.

Settings for these units

Normal status displays (7-segment) · Goodman/Amana GM9S96/AM9S96
Normal status displays (7-segment) · Goodman/Amana GM9S80/AM9S80
Normal status displays (7-segment) · Goodman/Amana GM9C96/AM9C96
Minimum recommended filter size · Goodman/Amana GM9C96/AM9C96

Models that show this code

16 models in Goodman/Amana *MVC96 (34.5 in. chassis)

*CVC960403BNB**CVC960603BNB**CVC960804CNB**CVC961005CNB**CVC961205DNB**MVC960403BNB**MVC960603BNB**MVC960803BNB**MVC960804CNB**MVC961005CNB**MVC961005DNB**MVC961205DNB*ACVC96AMVC96GCVC96GMVC96

Other codes on the same units

Eb4 Blower motor current trip or lost rotor control
Eb5 Blower motor locked rotor
Eb6 Blower motor over/under voltage or over temperature
Eb7 Blower motor missing parameters
Ec1 Network communication alarm
Ec2 E-module network communication alarm
Ec3 Bluetooth module network communication alarm
Ed0 No shared data on the network

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Source: Goodman Service and Troubleshooting ACVC96*BA/AMVC96*BA/GCVC96*BA/GMVC96*BA , Alarm Code Table p.56 / Troubleshooting Chart p.63. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

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.