Field companion
AR9T96 is not AMVC96. Carrier 45 is not Rheem 45. Open the plate, then diagnose from that IFC.
GR9S96
Goodman
Single-stage · 9-speed ECM · 96% AFUE · 7-seg EE-codes
Not GR9T96 (two-stage, E1/E2 vs E8/E9, dual PS). Not GMSS96 (LED 1–9 flash, no 7-seg). Not GMVC96 (ComfortBridge triple 7-seg, serial VS). Not Amana AR9S96 (same one-PS 9-speed idea, door card 0140F20003-B prints E0–E7 — not EE0/EE1/EE2). Do not apply AR9T96 high-fire codes — there is no high-fire switch.
926T
Bryant
Preferred 96 · two-stage · variable-speed · InteliSense
Not 987M Evolution modulating (ABCD, pressure band). Not 986T / 987T Evolution two-stage (ABCD bus). Not 926S (single-stage Preferred — one PS, no W2). Not 916S Legacy flash-look Comfort 96. A 926T will not become an Evolution furnace by swapping the stat.
GMVC96
Goodman
ComfortBridge · variable-speed · two-stage · 96% AFUE
Not GR9T96 / GD9T96 (single 7-seg E0–E9, 9-speed tap motor, conventional 24V only). Not GMEC96 (constant-torque / X-13, no ComfortBridge serial). Not GMSS96 (single-stage LED flash). Not GMVM97 (modulating valve — percent capacity, not two-stage Ht1/Ht2).
987M
Bryant
Evolution · modulating · communicating
Not 926T Preferred (24V + model plug, no ABCD). Not 986T / 987T Evolution two-stage (discrete 31/32, two-stage valve). A 926T will not run as Evolution by swapping the stat.
IFC language and FieldBench install notes for the plate on the cabinet.
Written 24V landings — R to W on heat, Y at the outdoor. Not a factory schematic.
Which White-Rodgers, ICM, or Honeywell carton actually fits this IFC — and which ones will not.
Affected models, serial range, symptom, and remedy. SMB 09-0024 is not a 59-series claim.
Load a model, then walk the next measurement.
R-32 charge, recover, vacuum, braze, capacitor — field steps with sources.
PT chart, superheat, and subcooling on one screen.
Tickets with the model number tied to the right chart.
Your Google or X login. One person, one device — no shared password.
Short cards still live under Procedures.