FieldBench
Amana codes

Amana

b2

Lockout

Motor HP mismatch vs shared-data set

Connected motor horsepower does not match the value in the furnace shared-data set. Furnace will not operate.

Walk b2 in Diagnose

4 plates — walk the one on the cabinet

First check

1 Read the plug / card on THIS cabinet

On Amana AMVC96 the model plug or shared-data card must match this cabinet size. A 100 kBtu plug in an 80 cabinet overfires and limits. A leftover memory card after a control swap throws d0/d4-class codes. Wrong replacement motor for this cabinet size.

Expect: Plug / card part matches the rating plate and the replacement control bulletin.

The rest of the walkthrough is Diagnose.

On the plates

  • Wrong replacement motor for this cabinet size.
  • Wrong memory card after an IFC swap (see d0/d4). An AMVC96 card is the usual miss on this new plate.
  • Wrong memory card after an IFC swap (see d0/d4).
  • Do not ‘make it work’ with a different HP ECM — ComfortBridge CFM tables are card-specific.
  • Wrong replacement motor for this cabinet (AVPTC37 vs 59, etc.).
  • Wrong memory card after a control swap (see d0/d4).

Plates that use b2

Same number, other makers

b2 on Amana is not the same code on these plates.