FieldBench
Amana codes

Amana

b0

Lockout

ECM blower not running

IFC commanded the serial ECM and does not detect it running.

Walk b0 in Diagnose

6 plates — walk the one on the cabinet

First check

1 Reseat the serial plug

On Amana AMVC96 this is a communicating / serial ECM, not a tap motor. Kill power, reseat the 14-pin (or OEM serial plug) at the motor and at the IFC. Pins straight, no corrosion. 14-pin harness seated at motor and IFC. No tap plugs on this motor.

Expect: Plug fully seated both ends. Correct motor for this cabinet.

The rest of the walkthrough is Diagnose.

On the plates

  • 14-pin harness seated at motor and IFC. No tap plugs on this motor.
  • 120 VAC to the motor, wheel free, no wet winding.
  • Do not install an AR9T96 9-speed motor as a ‘cheaper ECM’ — it will not talk this serial bus.
  • 14-pin harness at motor and IFC. No tap plugs.
  • Do not install an AR9T96 9-speed or an AMVC96 motor of the wrong HP.
  • Wheel free, 120 VAC to the motor.
  • 14-pin harness at motor and control. No tap plugs.
  • Do not install an AR9T96 9-speed motor in this air handler.

Plates that use b0

Same number, other makers

b0 on Amana is not the same code on these plates.