Model charts

Two-stage · 9-speed ECM · 96–97% AFUE · R-32 capable

Two-stage 96–97% condensing furnace with a 9-speed ECM (not a communicating VS motor) and a single 7-segment IFC. SS-AR9T96_AD9T96-R32 / wiring 0140F20004-B: two pressure switches (low + high). Conventional 24V thermostat. E1/E2 vs E8/E9 are not interchangeable with AR9S96 (one PS) or ARVT96 (ComfortBridge).

Single-stage · 9-speed ECM · 96–97% AFUE · R-32 capable

Single-stage 96–97% condensing furnace with a 9-speed ECM and one pressure switch. SS-AR9S96_AD9S96-R32 / wiring 0140F20003-B: 7-seg E0–E7 only (no E8/E9). Heat default F02, cool/Y/G default F04, F01 not recommended for heating. Conventional 24V. This is not the Goodman GR9S96 EE0/EE1/EE2 card and not AR9T96 dual-PS.

Single-stage · 9-speed ECM · 80% AFUE · Cat I metal vent

Single-stage 80% multi-position furnace with a 9-speed ECM and one pressure switch. SS-AR9S80_AD9S80-R32 / wiring 0140F20001-B: 4" Category I metal vent (not PVC), durable hot-surface igniter, LPM-31 LP kit with LP switch, HANG20 high-altitude. E2 is chimney / B-vent / inducer — not a 96% trap.

ComfortBridge · two-stage · communicating VS · up to 97.50% AFUE

Current Amana ComfortBridge two-stage 96–97.5% with a serial variable-speed ECM, CoolCloud Bluetooth, and a two-speed inducer / dual PS. SS-ARVT96_ADVT96-R32 (Feb 2025): do not operate above 0.5" w.c. ESP in heating — 0.5–0.8" tables are cooling only. Compatible with any single-stage thermostat. This is not AR9T96 (9-speed taps) and not the older AMVC96 plate (memory card is ARVT96).

ComfortBridge · two-stage · communicating VS · 96% AFUE

ComfortBridge communicating 96% two-stage furnace with a serial variable-speed ECM and a triple 7-segment IFC. Dual pressure switches and a two-speed inducer still exist — E1/E2 are low fire, E8/E9 are high fire. Sister of Goodman GMVC96. This is not AR9T96 (9-speed tap, single 7-seg), not ARVT96 (newer ComfortBridge R-32 plate — ARVT96 memory card, 0.5" heat-ESP hard limit), and not AMVM97 (modulating valve + variable inducer).

Single-stage · multi-speed · 96% AFUE

Single-stage 96% with one pressure switch and a flash-code or simple 7-seg IFC. Use the 1–9 flash chart. Do not apply AR9T96 E8/E9 high-fire codes — there is no high-fire switch. Do not apply AR9S96 0140F20003-B E0–E7 (that is the current 9-speed 7-seg single). Do not apply AMVC96 / ARVT96 ComfortBridge E/b/d codes.

ComfortBridge · modulating · communicating VS · 97% AFUE

Modulating ComfortBridge 97% cousin of AMVC96. Same triple 7-seg IFC language (idle/Ht, E/b/d) but capacity is 0–100% through a modulating valve and a variable inducer — not two-stage W1/W2 solenoids. Sister of Goodman GMVM97. Do not apply AMVC96 two-stage staging tests.

ComfortBridge · communicating VS air handler · electric heat

Amana/Goodman ComfortBridge communicating air handler (AVPTC / AVPEC / AHVE family, MBVC modular blower). Serial VS blower and field electric heat strips. No gas valve, no inducer, no furnace E1–E9 pressure-switch codes. CFM and heat-kit staging live in the IFC / CoolCloud menu.

Two-stage · 9-speed ECM · 96% AFUE

Goodman-badge twin of the Amana AR9T96. Two-stage gas valve, two-speed inducer, 9-speed ECM (tap/profile, not communicating), and a single 7-segment IFC that speaks E0–E9. Conventional 24V thermostat. Low-fire and high-fire each have their own pressure switch — E1/E2 vs E8/E9 are not the old 1-flash Goodman chart.

ComfortBridge · variable-speed · two-stage · 96% AFUE

Goodman ComfortBridge communicating 96% two-stage. Triple 7-segment IFC, 14-pin serial ECM, optional communicating thermostat with 24V fallback. Badge twin of Amana AMVC96. Dual pressure switches still exist — the display language is ComfortBridge E/b/d, not a 9-speed tap card.

Single-stage · 96% AFUE · LED flash

Single-stage 96% condensing furnace with one pressure switch and a red LED flash-code IFC. This is the board most ‘Goodman 3-flash’ videos are actually about — not GR9T96, not GMEC96, not GMVC96.

Two-stage · constant-torque ECM · 96% AFUE

Two-stage 96% with a multi-speed / constant-torque ECM (X-13 style profiles). Conventional 24V. Dual pressure switches. Often a 7-seg that still speaks E0–E9 (low/high PS) like GR9T96 — but the motor is CT profiles, not a 9-speed tap card and not a ComfortBridge 14-pin serial.

Two-stage / communicating outdoor · 18 SEER class

Goodman two-stage communicating condensing unit. Outdoor board talks ComfortBridge when paired with a communicating indoor (GMVC / AVPTC family). Faults live on the OUTDOOR board — not furnace E-codes. Will also run 24V Y1/Y2 against a conventional indoor. Amana ASXC18 is its own plate.

Two-stage / communicating heat pump outdoor

Goodman/Amana two-stage or communicating heat pump outdoor (GSZC18 / GSZC16 / ASZC18). Reversing valve plus defrost control live on the outdoor board. Codes are outdoor, not furnace E-codes. GSZB16 is listed as a search alias only — many GSZB units are single-stage with a simpler defrost board.

ComfortBridge · modulating · 97% AFUE

Modulating ComfortBridge 97% furnace. Badge twin of Amana AMVM97. Same E / b / d display language as GMVC96, but the gas valve is modulating (percent capacity), not two discrete stages. Do not apply Ht1/Ht2 staging tests.

Single-stage · 9-speed ECM · 96% AFUE · 7-seg EE-codes

Current Goodman single-stage 96% with a 9-speed ECM and a 7-segment IFC that speaks EE0 / EE1 / EE2 (not flash, not GR9T96 E8/E9). One pressure switch, one inducer speed. GD9S96 is the downflow twin. GR9S92 is the 92% cousin — same EE-card, still a collector. This is the plate replacing a lot of GMSS96 flash boards in the field.

Single-stage · 92% AFUE · LED flash

Merit-style Goodman 92% single-stage with the 1–9 red LED chart. Still condensing — collector and PVC exist. Same flash meanings as GMSS96; the secondary / vent load is the 92% cousin, not an 80% chimney.

Single-stage · 80% AFUE · LED flash · metal vent

Goodman 80% single-stage with the 1–9 LED chart. Category I metal vent. No secondary collector, no PVC trap story. 3-flash is chimney / inducer / draft switch. GMES80 is the multi-speed ECM 80% cousin — same flashes, different blower. GDS80 / GDH80 are downflow 80%.

Single-stage outdoor AC · contactor + dual cap

Goodman single-stage condensing unit. Contactor, dual run capacitor, piston or TXV indoor. No ComfortBridge outdoor board, no GSXC18 two-stage comms. Faults are mechanical: cap, contactor, fan, charge — not furnace E-codes.

Single-stage HP · defrost board · contactor

Goodman single-stage heat pump. Contactor + dual cap + defrost control + reversing valve. O/B is board- and stat-specific — do not assume Carrier O-on-cool. Not GSZC18 communicating two-stage.

ComfortBridge · two-stage · serial VS · 80% Cat I

Current Goodman ComfortBridge two-stage 80% with a serial VS ECM. Same E / b / d triple-7-seg language as GMVC96 / AMVC96 — different vent. E2 / E9 are chimney / B-vent / common-vent draft, not a 96% trap. GDVT80 is the downflow twin. This is the 80% cousin of ARVT96 / GRVT96, not GMS80 flash.

ComfortBridge · two-stage · serial VS · 80% Cat I

Amana ComfortBridge two-stage 80%. Factory twin of Goodman GRVT80. Triple 7-seg + serial ECM + memory card. E2/E9 are metal-vent draft. Not ARVT96 (96% PVC, 0.5" heat-ESP on that SS) and not AR9S80 (9-speed tap, single 7-seg).

Two-stage · 9-speed ECM · 80% Cat I

Goodman two-stage 80% with a 9-speed tap ECM and a single 7-seg IFC. Same E1/E2 vs E8/E9 split as GR9T96 — Category I metal vent instead of PVC. GD9T80 is downflow. This is not GRVT80 ComfortBridge and not GMS80 flash.

Two-stage · 9-speed ECM · 80% Cat I

Amana two-stage 80% 9-speed. Twin of Goodman GR9T80. E1/E2 vs E8/E9 on a metal vent. Not AR9T96 (96% PVC) and not AR9S80 (single-stage one PS, 0140F20001-B).

Single-stage · 9-speed ECM · 80% Cat I

Goodman single-stage 80% 9-speed. Twin of Amana AR9S80. One pressure switch, 9-speed taps, Category I 4" metal vent. E2 is a chimney. Not GMS80 flash and not GR9S96 (96% 9-speed EE card).

ComfortBridge · two-stage · serial VS · 80% (older plate)

Older Goodman/Amana ComfortBridge two-stage 80% (GMVC80 / AMVC80). Same E/b/d language as GMVC96 — metal vent. Current truck stock is often GRVT80 / ARVT80 (newer ComfortBridge 80% card). Do not drop a 96% memory card into this cabinet.

Ultra-low NOx · single-stage · 80% · SCAQMD / SJV

Goodman California ultra-low NOx 80% (GRVS80-U and cousins). Premix / metal-fiber burner, not the 40 ng/J Low-NOx wrinkle-bend used on GR9S80. Draft and limit language can look like GMS80 — the burner and gas train do not. Confirm the -U plate and the ULN conversion kit before you treat it as a standard 80%.

ComfortBridge · modulating · serial VS · 97%

Current Amana ComfortBridge modulating 97% (ARVM97 / ADVM97). 0–100% valve and variable inducer. Same communicating world as AMVM97 — newer cabinet / card. Do not run AMVC96 two-stage E8/E9 tee tests.

ComfortBridge · modulating · serial VS · 97%

Goodman current modulating ComfortBridge 97%. Twin of Amana ARVM97. Not GMVM97 (older plate) and not GMVC96 (two-stage).

Preferred 96 · two-stage · variable-speed · InteliSense

Bryant Preferred 96 two-stage furnace (factory twin of Carrier 59TP6). Two-digit IFC: 31, 32, 33, 34, 41, 42…. Model plug required. InteliSense is remote data to an ecobee-for-Bryant — it is not Evolution ABCD. 925T is the previous Preferred two-stage plate (same 31/32 language).

Preferred 96 · single-stage · variable-speed · InteliSense

Bryant Preferred 96 single-stage. VS / 25-speed blower and InteliSense like 926T, but one gas solenoid and one pressure switch. Two-digit IFC. A 32 on this board is not ‘low fire’ — there is no high fire.

Evolution · modulating · communicating

Bryant Evolution modulating 98% furnace (factory twin of Carrier Infinity 59MN7). ABCD communicating bus. The wall control is part of the IFC. Capacity is a percent, not W1/W2. 31/42 is an inducer/pressure BAND.

Evolution · two-stage · communicating 96%

Bryant Evolution two-stage 96% (factory twin of Carrier 59TN6). 987T is the current Evolution two-stage refresh — same idea. ABCD bus plus a two-stage gas valve and dual pressure switches. Not modulating like 987M. 31/32 here are low vs high PS.

Legacy · single-stage · 96/97% (912S is 92%)

Bryant Legacy Comfort-style 96/97% single-stage (915S is the previous plate; 912S is the 92% cousin). Two-digit IFC. One pressure switch. Fixed-speed or 18-speed blower — not Preferred VS, not Evolution ABCD. Field reports of 33/34/13 on 915SB are this family.

Evolution 80% · two-stage · metal vent

Bryant Evolution 80% two-stage (current 880TA; 355CAV is the older Infinity-80 badge twin of Carrier 58CVA). Category I metal vent. No PVC collector. 31 is chimney/inducer, never a 96% trap. 355CAV door cards are an older IFC generation — confirm THAT sticker.

Legacy / Preferred 80% · single-stage · metal vent

Bryant 80% single-stage. 800S / 801S / 810S are Legacy multi-18-speed; 820S / 821S are Preferred VS 80% with InteliSense. Category I metal vent on all of them. Two-digit 31 is chimney/inducer, never a 96% trap. 801S / 811S / 821S are the Low-NOx badges — same draft physics.

Evolution Greenspeed · inverter HP

Bryant Evolution inverter heat pump (factory twin of Carrier 25VNA4 / Greenspeed). Outdoor drive + ABCD. Faults are inverter/comm/sensor, not a contactor-and-cap story. 189BNV is a Preferred inverter cousin — weigh-in still applies; the wall control may not be full Evolution.

Performance 96 · two-stage · variable-speed

Carrier/Bryant Performance 96 two-stage VS furnace. Two-digit status codes on the IFC (31, 32, 33, 34, 41, 42…). Model plug required. This is not Infinity ABCD communicating, even though the motor is variable-speed.

Comfort 96 · single-stage · conventional 24V

Carrier Comfort 96 single-stage condensing furnace. 59SC5 / 59SC5A are single-stage gas with a conventional multi-speed or CT blower. 59SC6 keeps single-stage gas and adds an 18-speed blower — still not two-stage, still not Infinity. Conventional 24V thermostat. Two-digit IFC like other Carrier boards, but there is no high-fire pressure switch and no W2 furnace path.

Infinity · modulating · communicating

Infinity modulating condensing furnace. ABCD communicating bus. The wall control is part of the IFC. Two-digit codes still appear on the board (13, 14, 24, 31, 33, 34, 41), but the Infinity thermostat event history is the real diagnostic. 31/42 on a modulator is an inducer/pressure BAND, not a discrete two-stage pressure switch.

Infinity · two-stage · communicating 96%

Infinity two-stage communicating 96% furnace (Bryant 986T). ABCD bus plus a two-stage gas valve and dual pressure switches. Not modulating like 59MN7. Two-digit board codes plus Infinity English on the wall control. 31/32 here are low vs high PS — the same two-stage physics as 59TP6, on a communicating control.

Infinity 80% · two-stage · metal vent

80% two-stage Infinity furnace. Category I vent (metal), no PVC secondary, no condensate collector. Codes look like other Carrier two-digit charts but the physics are draft-hood / inducer + metal vent, not a 96% trap. A 31 here is chimney/draft, never a drowned collector.

Comfort 80 · single-stage · Category I metal vent

Carrier Comfort 80% single-stage Category I metal-vent furnace. 58STA / 58STX are the single-stage Comfort 80. 58CTA is the two-stage 80% cousin (same vent physics, extra solenoid / high-fire path). Older and current boards speak two-digit codes or a vintage LED-status chart — 31 is always metal-vent draft / inducer / common vent, never a PVC condensate trap.

Infinity Greenspeed inverter HP

Infinity inverter heat pump. Outdoor drive + ABCD. Faults are inverter/comm/sensor, not a contactor-and-cap story. Do not charge it like a 24ACC6 piston unit and do not look for L-codes on a Comfort single-stage.

Comfort · single-stage condensing unit

Carrier Comfort single-stage air conditioner. Contactor + dual run capacitor + piston or TXV indoor. Conventional 24V Y. Not Greenspeed, not Infinity 24VNA / 25VNA. There are no inverter L-codes on this outdoor.

Performance 97 · two-stage · variable-speed · InteliSense

Carrier Performance 97 two-stage VS (current 97% InteliSense plate). Same two-digit 31/32/33/34/41 language as 59TP6 — different AFUE rating plate, different model-plug map. Not Infinity. Bryant twin is 927T.

Preferred 97 · two-stage · variable-speed · InteliSense

Bryant Preferred 97 two-stage VS. Factory twin of Carrier 59TP7. Same 31/32 two-digit IFC as 926T — 97% rating plate and its own model plug. Not Evolution.

Performance 96 · single-stage · variable-speed

Carrier Performance single-stage VS 96% (59SP6 current, 59SP5 previous). One solenoid, one PS, VS / 25-speed blower. Two-digit IFC. 32 is not low-fire — there is no high fire. Bryant twin is 926S.

Preferred 80 · two-stage · variable-speed · Cat I

Bryant Preferred 80% two-stage VS (820T; 821T is the Low-NOx cousin). Metal vent. Two-digit IFC. 31 is chimney / inducer, not a PVC trap. Not Evolution 880TA (ABCD) and not 800S Legacy PSC.

Preferred 80 · single-stage · variable-speed · Cat I

Bryant Preferred 80% single-stage VS (821S Low-NOx). Metal vent. One PS. VS blower like 926S — Category I physics like 800S. Not 820T two-stage.

Performance 80 · two-stage · variable-speed · Cat I

Carrier Performance 80% two-stage VS (58TP1 is Low-NOx). Metal vent. Twin of Bryant 820T. Two-digit 31 is chimney draft. Not 58CVA Infinity 80%.

Performance 80 · single-stage · variable-speed · Cat I

Carrier Performance 80% single-stage VS (58SP1 Low-NOx). Twin of Bryant 820S. Metal vent. Not 58STA Comfort 80 (taps / 18-speed) and not 58SU0 ULN.

Infinity · two-stage · communicating · 97%

Current Infinity two-stage 97% (59TN7). ABCD bus. Discrete 31/32 like 59TN6 — newer cabinet / firmware. Not 59MN7 modulating and not 59TP7 Performance 24V.

Evolution · two-stage · communicating · 97%

Bryant Evolution two-stage 97%. Twin of Carrier 59TN7. Discrete 31/32, ABCD bus. Not 987M modulating and not 986T (previous Evolution two-stage).

Evolution · single-stage · communicating VS · 80%

Bryant Evolution 80% single-stage VS (830CA). ABCD bus, metal vent. One fire rate. Not 880TA (two-stage Evolution 80%) and not 830SA Legacy 80%.

Legacy 92 · single-stage · 92.1% condensing

Bryant Legacy 92% single-stage (912S). Still condensing — collector and PVC exist. Same two-digit 31/33/34 as 916S. The secondary / vent load is the 92% cousin, not an 80% chimney and not 916S 96%.

Evolution · single-stage · communicating VS · 95%

Bryant Evolution 95% single-stage VS. ABCD bus. One fire rate, condensing trap. Not 987M / 987T and not 935SA Legacy 95%.

Legacy 95 · single-stage · 95% condensing

Bryant Legacy 95% single-stage. Two-digit Comfort/Legacy IFC. One PS, PVC trap. Not 935CA Evolution and not 916S 96/97%.

Ultra-low NOx · 96% condensing · CA

Carrier California ultra-low NOx 96% (59CU5 Infinity-family ULN / 59SU5 Comfort ULN). Premix burner. Two-digit IFC still speaks 31/33/34 — the gas train is not a 59SC5 wrinkle-bend. Confirm the ULN plate and the listed LP / orifice kit.

Ultra-low NOx · 80% · Cat I · CA

Carrier Comfort / Infinity 80% ultra-low NOx (58SU0 Comfort, 58CU0 Infinity-family). Premix burner, metal vent. 31 is chimney draft. Not 58STA standard Comfort 80.

40″ multipoise 90% · secondary HX bulletin era

Carrier / Bryant 40″ multipoise 90% family that Carrier SMB 09-0024 names: 58MCA / MCB / MXA / MXB / MSA / UVB / MVP / MVB / MVC / MTA / MTB and Bryant 340A / 340M / 345M / 350A / 350M / 351D / 352A / 352M / 355A / 355B / 355C / 355M. Serial range on that bulletin is 2993A00001 – 1808A99999. Two-digit or vintage LED depending on revision. Secondary HX restriction is the warranty story — not a 59TP6 model-plug call.

S-series · two-stage · variable-speed · 96%

Trane/AS S9V2-VS 96% two-stage variable-speed. 3-character IFC (CoF, Ht1, Ht2, IdL, E2.1…). No dip switches. Last six errors stored. All Molex low voltage — no spade LV. This display language is not Carrier 31/33 and not Amana E2.

S-series · two-stage · constant-torque · 96%

Trane/AS S9X2 two-stage 96% with a constant-torque (X-13 style) blower and an IFC that still uses tap/profile setup. Cheaper cousin of S9V2. Same 96% dual-pressure-switch physics. Do not use the S9V2 ‘no dip switch / VS menu’ playbook.

S-series · single-stage · 96%

Trane/AS S9X1 single-stage S-series 96%. ONE pressure switch. Constant-torque or PSC depending on SKU. No W2 prove. Same 96% collector/trap physics as S9X2, half the staging.

ComfortLink · modulating · communicating

Trane communicating modulating 95/96% furnace. ComfortLink / AccuLink data pair, not S9V2 24V. The thermostat is on the bus. Capacity is a percent, not W1/W2 / Ht1 / E2.1.

S-series · two-stage · 80% · Category I metal vent

Trane/AS S-series 80% two-stage (S8X1 single-stage sibling). Category I metal vent. NO secondary drain, NO PVC trap story. Same-looking E-decimals as the S9 family IFC if the control matches — confirm THIS door; the physics are chimney/inducer, not collector drown.

ComfortLink · inverter heat pump

Trane/AS XV20i / 4TWV0 communicating inverter heat pump. Outdoor drive + ComfortLink data pair. Not an XR14 contactor unit. Indoor is on the bus (often XC95m / communicating air handler). Charge is weigh-in + line-set — not a piston superheat chart.

Elite · two-stage · variable-speed · 96%

Lennox EL296V two-stage 96% Elite with a variable-speed blower and a 7-segment SureLight IFC (ignition control 107045-XX / 103130-XX — same E2xx family as EL297DFV / EL296UHV field boards). Codes are E plus three digits. Two pressure switches, two hoses. Confirm any odd extra code on THAT door card — revisions shuffle a few numbers in the E292/E310 neighborhood.

Elite · two-stage · constant-torque · 96%

Elite two-stage 96% constant-torque cousin of the EL296V. Same SureLight E2xx gas, pressure-switch, and limit language (107045-XX family). Different motor: tap/profile, not a serial VS blower. Techs drop an EL296V motor in this cabinet and throw E202 / E310.

Merit · single- or two-stage · LED flash · 96%

Merit 96% condensing furnace using the 1–9 single-LED flash chart (or older dual-LED on G-series replacements). No E2xx 7-seg. PVC collector and trap. ML193 is a 93% condensing cousin with the same flash language — not this plate.

Merit · 80% · metal vent · LED flash

Merit 80% Category I furnace. Same 1–9 flash numbers as ML196, opposite physics on 3-flash: chimney, inducer, common vent — not a drowned 96% trap. Metal vent, no secondary collector.

Signature · modulating · iComfort communicating

Lennox modulating communicating furnace. iComfort RS bus is the system, not an option. E105 is a first-class native code. Capacity is a percent, not W1/W2. The wall control names the same SureLight E2xx pressure / flame / limit family in English.

Elite · two-stage · 80% · metal vent

Elite 80% two-stage (SL280UHV / EL280). Category I metal vent. VS SKUs may show the same SureLight 7-seg E2xx family as EL296V — if you see E223 it is still metal-vent draft, not a PVC trap. Flash SKUs use Merit-like 1–9 flashes. Identify the display and the vent before you cut anything.

Two-stage · 96% · multi-speed / CT · 2-digit IFC

Rheem/Ruud two-stage 96% with a constant-torque / multi-speed blower and a 2-digit IFC. Not EcoNet-required. 45 is low-pressure switch OPEN (intake / low-fire path on this TA board). 57 is high-pressure switch OPEN (exhaust / high-fire path). Rheem 45 is not Carrier 45 (Carrier 45 is control lockout).

Two-stage · 96% · variable-speed · EcoNet-capable

Rheem/Ruud two-stage 96% variable-speed, EcoNet-capable. Same cabinet family as R96TA but a VS blower and an optional EcoNet data pair. Door cards on VA / Endeavor often split the low-pressure path: 45 = LPS open at HIGH inducer speed, 46 = LPS open at LOW inducer speed, 57 = high-pressure switch open.

80% · variable-speed · metal vent

Rheem 80% variable-speed, Category I metal vent. Same 2-digit language as the 96% IFCs (11, 22, 45, 57) but the physics are chimney and inducer — not PVC intake, not a collector, not a condensate trap. This furnace does not share 58/59 condensate with R96TA / R96VA.

Two-stage · 80% · variable-speed · metal vent

Rheem/Ruud two-stage 80% variable-speed. Metal Category I vent. 45 vs 57 are LOW vs HIGH draft on METAL vent — not PVC intake/exhaust, not a 96% collector, not a trap. No 58/59 expected.

Prestige / Endeavor · modulating 98% · EcoNet

Rheem Prestige / Endeavor modulating 98% EcoNet furnace. The communicating EcoNet thermostat is the system. Capacity is a percent, not W1/W2. 11/12/13 still mean ignition/flame. 22 is limit. 45/57 are draft at a firing rate (modulating inducer / pressure), not a simple two-switch tee. 93 is internal.

York/JCI 96% · two-stage · variable-speed

York/Coleman/Luxaire TM9V is a two-stage 96% condensing furnace with a variable-speed blower. The IFC uses a green/amber/red LED behind the blower-door sight glass — not Carrier two-digit 31 and not Amana E2. V in the model is the VS CFM menu, not a tap bank.

York/JCI 96% · two-stage · multi-speed

York/Coleman/Luxaire TM9T is the multi-speed / tap-blower twin of the TM9V. Same JCI green/amber/red two-stage 96% flash chart. Airflow complaints are heat/cool taps, not a VS CFM menu.

York/JCI 80% · variable-speed · metal vent

York/JCI 80% variable-speed (TM8V) and the TM8X/TM8Y badge cousins. The LED speaks the same green/amber/red language as TM9V. 3-red is Category I metal-vent draft — not a 96% condensate trap.

Daikin ComfortNet / Daikin One · two-stage · communicating VS · 96%

Daikin-badge ComfortNet / Daikin One 96% two-stage with a communicating variable-speed blower and a triple 7-segment IFC. Same factory family as Amana AMVC96 / Goodman GMVC96. Use the ComfortBridge E / b / d set (E0–EA, b0/b1/b2, d0) — not the AR9T96 E-only 24V card.

Daikin ComfortNet / Daikin One · modulating · 97%

Daikin modulating ComfortNet 97% furnace. Capacity is a percent, not W1/W2 two-stage. Same ComfortNet / Daikin One bus and E / b / d presentation as DM96VC. Do not diagnose it as a two-stage valve.

Daikin communicating inverter heat pump outdoor

Daikin communicating heat-pump outdoor. DZ20VC is the inverter SKU; some siblings in the aisle are two-stage communicating (DX18TC-class) and do not use inverter L-codes the same way. Codes live on the outdoor board (U4, L5/E6, HPS, LPS). Indoor furnace codes are a different chart.

M-series Hyper-Heating wall indoor · i-see sensor

Mitsubishi Hyper-Heating wall indoor (MSZ-FS, previous-gen MSZ-FH). Faults are indoor LED / outdoor LED (U4, P1, P6, E8, F3, EA). There is no 24V W sequence and no furnace 7-seg. i-see is FS/FH only — do not look for it on GL.

M-series wall indoor · no i-see

Cheaper M-series wall indoor (MSZ-GL / MSZ-GS). Letter codes look like FS (U4, P1/P2, P6, F3, E8/U2, EA) but there is no i-see sensor and no Hyper-Heating FS-only feature set. Do not diagnose FS-only parts on this head.

MXZ multi-zone outdoor · branch box on some

Mitsubishi MXZ multi-zone outdoor (SM and 3C/4C-class). Several wall or ducted indoors on one outdoor. Some layouts use a branch box — U4 may be box-to-outdoor, not just head-to-outdoor. Charge is weigh-in plus indoor adders. Isolate one bad indoor before you condemn the outdoor.

Bosch IDS 2.0 · inverter ducted split · BOVA outdoor + BVA/BAA AHU

Bosch IDS 2.0 / BOVA 2.0 inverter outdoor paired with a BVA / BAA air handler. The indoor–outdoor pair is communicating. The wall thermostat on many jobs is conventional 24 V at the AHU. Charge is weigh-in / the Bosch chart — not piston superheat. Do not apply Daikin U4 or Carrier 31 to this system.

ICP / Heil / Tempstar / Comfortmaker Comfort 96 · single-stage · PVC

Heil / Tempstar / Comfortmaker / ICP Comfort 96 single-stage (N9MSB / N9MSE / G9MVE depending on badge). Carrier-platform two-digit IFC. Same 31 / 33 / 34 language as Carrier 59SC5. This slug is the 96% PVC N9MSB — metal-vent 80% cousins exist and are not this trap.

S-series · single-stage · 80% · Cat I

Trane/AS S-series 80% single-stage. Split out of the S8X2 plate so a single-stage cabinet does not inherit two-stage W2 / high-draft checks. Category I metal vent. Same-looking E-decimals as S9 if the IFC family matches — physics are chimney, not collector.

S-series · two-stage · VS · 80% · Cat I

Trane S8V2 / S8V2-C two-stage 80% VS. Open multi-poise cabinet, metal vent. Same communicating-vs-24V S-series IFC idea as S9V2 — no collector. E-decimals that look like S9V2 are chimney draft.

S-series · single-stage · 96% · basic PSC / CT

Trane S9B1 96% single-stage budget S-series. Still condensing. Simpler motor than S9X1 / S9V2. Confirm THIS door — do not steal the S9V2 CFM menu.

S-series · single-stage · 80% · basic

Trane S8B1 80% single-stage budget. Metal vent. Not S8X1 (higher S-series 80%) and not S9B1 (96%).

Legacy 80% · XC / XV / XL / XR · Cat I

Pre-S-series Trane/AS 80% family still on trucks from the last 12 years: XC80 communicating-capable, XV80 VS, XL80 / XR80 mid/entry. Metal vent. Do not apply current S8X2 door decimals until you read THIS sticker.

Legacy 95% · XL / XR / XV · condensing

Pre-S-series Trane/AS 95% condensing (XL95 / XR95 / XV95). Still a collector and PVC. Do not apply S9V2 CFM menus. Confirm THIS door card.

Elite · single-stage · 96% · CT

Lennox Elite single-stage 96% CT (EL196E; EL195E is a related Elite 95/96 single-stage). SureLight 7-seg on many SKUs. One PS. Not EL296E (two-stage) and not ML196 (Merit flash).

Elite · ultra-low emission · CA / NV

Lennox Elite ultra-low emission (EL195NE and related NV SKUs). Premix / lowest-emission burner. SureLight language can match the Elite 7-seg — the gas train does not. Not a standard EL196E orifice job.

Signature · ultra-low emission · VS · communicating

Lennox Signature SL297NV variable-speed ultra-low emission. iComfort bus. Premix burner. Not SLP99V modulating and not EL296V 24V Elite.

Prestige / Endeavor · modulating · EcoNet · 97–98%

Rheem/Ruud modulating EcoNet 97–98% (R98MV upflow, R97MV downflow/horizontal). Percent fire, constant-CFM blower. Not R98V older Prestige plate and not R972V two-stage Endeavor.

Endeavor · two-stage · VS · EcoNet · 96–97%

Rheem Endeavor two-stage VS EcoNet (R972V 97%, R962V 96%). Current VA-class door often splits 45 vs 46 on the low-pressure path. Not R96TA CT and not R98MV modulating.

Endeavor · single-stage · VS · EcoNet · 92–95%

Rheem Endeavor single-stage VS EcoNet (R951V 95%, R921V 92%). One solenoid. Still condensing. Not R951T CT and not R972V two-stage.

Endeavor / Classic · single- or two-stage CT · 92–96%

Rheem CT 24V 92–96% (R951T 95% single, R921T 92% single, R96T two-stage CT). Not EcoNet-required. R96TA stays the two-stage TA reference — this plate catches the T-suffix Endeavor SKUs techs type from the cabinet.

Classic 80 · single- or two-stage · PSC / CT · Cat I

Rheem/Ruud 80% S-suffix (R801S single, R802S two-stage). Metal vent. PSC or CT — not the R801V VS EcoNet motor. 45 is chimney draft.

JCI 96% · single-stage · multi-speed / CT

York/Coleman/Luxaire 96% single-stage (TM9X / TM9E / TG9S). Same JCI LED flash family as TM9T — one fire rate, one PS. Not TM9V VS two-stage.

JCI 80% · two-stage or single · multi-speed · Cat I

York/Coleman/Luxaire 80% TM8T / TM8X. Metal vent. Same JCI LED as TM8V — not a VS motor on the T/X plates. 3-red is chimney draft.

ComfortNet / Daikin One · two-stage · serial VS · 80%

Daikin communicating 80% two-stage VS (DM80VC / DC80VC). Same ComfortNet / Daikin One bus as DM96VC — Category I metal vent. E2/U4 thinking that assumes a 96% trap is wrong.

Daikin 96% · two-stage or single · 24V · non-communicating

Daikin 24V 96% (DM96HS / DM96TN). Not ComfortNet / Daikin One. Conventional W1/W2. Do not land a communicating outdoor on a data pair this IFC does not speak.

ICP / Heil / Tempstar Comfort 96 · ECM

ICP N9MSE 96% ECM (Heil / Tempstar / Comfortmaker). Carrier-platform two-digit 31/33/34. N9MSB is the PSC Comfort 96 already in the bench — this plate is the ECM / later 96% revision. Still one PS, still a trap.

ICP / Heil / Tempstar 80% · Cat I

ICP 80% (N80ESN / N8MXL / F8MTL). Carrier-platform two-digit. 31 is metal-vent draft. Not N9MSE 96%.

Merit · 93% or 80% CT · LED flash

Lennox Merit ML193 93% condensing (ML180E is the 80% CT Merit cousin). Same 1–9 flash as ML196 / ML180 — confirm vent. 93% still has a collector. ML180E does not.

R-32 single-stage · contactor + dual cap

Current Goodman R-32 single-stage condensing unit (GLXS4B / GLXS4M / GLXS5B / GLXS3B). Contactor + dual cap, same physics as GSX16 — different refrigerant. A2L. Charge and recovery are R-32, not a 410A GSX16 top-off.

R-32 two-stage scroll · 17 SEER2 class

Current Goodman R-32 two-stage condensing unit. Y1/Y2 or communicating indoor depending on vintage. Not the R-410A GSXC18 and not the GXV9S inverter.

Inverter · communicating · up to 19 SEER2

Goodman variable-speed inverter air conditioner (GXV9S / GXV6S; older badge GSXV9). Outdoor drive + ComfortBridge when paired with a communicating indoor. No reversing valve. Charge is weigh-in + line-set — not a GSX16 piston chart.

Two-stage / communicating outdoor · 18 SEER class

Amana-badge two-stage communicating condensing unit. Same outdoor family as Goodman GSXC18. Codes are on the outdoor board. ComfortBridge indoor (AMVC / AVPTC) or 24V Y1/Y2.

Single-stage outdoor AC · contactor + dual cap

Amana single-stage R-410A condensing unit. Contactor + dual cap. Same story as Goodman GSX16. Not ASXC18 and not the current ALXS4B R-32 box.

R-32 single-stage · contactor + dual cap

Current Amana R-32 single-stage condensing unit. A2L. Same contactor physics as ASX16 — wrong refrigerant to top off from a 410A truck.

R-32 two-stage scroll

Amana R-32 two-stage condensing unit. Badge twin of Goodman GLXT7C. Not ASXC18 410A and not AXV9S inverter.

Inverter · communicating · up to 19 SEER2

Amana variable-speed inverter air conditioner. Badge twin of Goodman GXV9S. No reversing valve. Weigh-in charge.

Infinity Greenspeed inverter AC

Infinity inverter air conditioner. Outdoor drive + ABCD. No reversing valve and no defrost — that is 25VNA4. Charge is weigh-in. There is no contactor and no dual cap.

Infinity inverter AC · Puron Advance (R-454B)

Current Infinity inverter air conditioner on R-454B (Puron Advance). A2L. Same ABCD drive idea as 24VNA6 — wrong refrigerant to recover as 410A.

Performance · two-stage condensing unit

Carrier Performance two-stage air conditioner. Y1/Y2, two-stage scroll, InteliSense-capable on late boards. Not Infinity ABCD and not a single-stage 24ACC6.

Performance · two-stage · R-454B

Current Performance two-stage air conditioner on R-454B. Y1/Y2. Same staging as 24TPA7 — different refrigerant.

Performance · single-stage · InteliSense

Carrier Performance single-stage air conditioner. Contactor + dual cap like 24ACC6, plus InteliSense on late boards. Still not Infinity and still not two-stage.

Comfort · single-stage · R-454B

Current Comfort 16 air conditioner on R-454B. Contactor + dual cap. Same electrical story as 24ACC6 — wrong refrigerant.

Performance · single-stage · R-454B

Current Performance single-stage on R-454B. Contactor + dual cap + InteliSense. Same electrical class as 24SPA6 — wrong refrigerant.

Evolution inverter AC

Bryant Evolution inverter air conditioner (191VAN current; 180B in the field). Outdoor drive + ABCD. No reversing valve and no defrost — that is 280ANV. Charge is weigh-in.

Evolution · two-stage communicating AC

Bryant Evolution two-stage air conditioner. ABCD to the Evolution control. Two-stage scroll — not an inverter and not Preferred InteliSense. Do not treat it like 148TAN Y1/Y2.

Preferred · two-stage condensing unit

Bryant Preferred two-stage air conditioner. Y1/Y2, two-stage scroll, InteliSense on late boards. Not Evolution ABCD and not 187B.

Preferred · single-stage · InteliSense

Bryant Preferred single-stage air conditioner. Contactor + dual cap, InteliSense on late boards. Still one Y. Not 148TAN and not Evolution.

Legacy / Comfort · single-stage contactor

Bryant Legacy / older Comfort single-stage condensing unit (135SAN / 134SAN / 114C / 113A / 126BNA). Contactor + dual cap. Same physics as Carrier 24ACC6. Still everywhere.

TruComfort inverter AC · ComfortLink

Trane / American Standard XV18 TruComfort inverter air conditioner. Outdoor drive + ComfortLink. No reversing valve — that is XV20i. Charge is weigh-in.

XR / Gold · two-stage condensing unit

Trane XR17 / 4TTR7 two-stage air conditioner (American Standard Gold 17 / 4A7A7). Y1/Y2, two-stage scroll. Not TruComfort inverter and not XR16 one-contactor.

XR / Gold / Silver · single-stage contactor

Trane XR16 / XR15 / XR14 single-stage condensing unit (4TTR6 / 4TTR5; American Standard Gold 16 / Silver 15 / 4A7A6 / 4A7A5). Contactor + dual cap. SEER number is not a different board.

Elite · single-stage condensing unit

Lennox Elite single-stage air conditioner. Contactor + dual cap. 13ACX / 14ACX in the field are the older Elite/Merit singles — same electrical class. Not EL18XCV inverter.

Elite / older Signature · two-stage scroll

Lennox Elite EL18XC1 two-stage air conditioner. Y1/Y2. XC21 / XC16 in the field are older Signature/Elite two-stage boxes — same staging class, not the SL28XCV inverter.

Elite · variable-capacity inverter AC

Lennox Elite variable air conditioner. Outdoor inverter. No reversing valve. Charge is weigh-in. Not EL18XC1 two-stage and not SL28XCV Signature.

Merit · single-stage contactor

Lennox Merit single-stage air conditioner. Contactor + dual cap. Cheaper door than EL16XC1, same electrical class. ML13KC / 13ACD in the field land here.

Signature · variable-capacity inverter AC

Lennox Signature variable air conditioner (SL28XCV; SL25KCV / SL25XCV in the field). Outdoor inverter + iComfort. No reversing valve. Charge is weigh-in. Not XC21 two-stage.

Classic · single-stage · R-410A

Rheem / Ruud classic single-stage condensing unit (RA16 / RA14 / RA13; Ruud UA / WA). Contactor + dual cap. R-410A. Not the Endeavor RA14AZ R-454B box.

Endeavor Classic / Plus · single-stage · R-454B

Current Rheem Endeavor single-stage (RA14AZ / RA15AZ / RA16AZ). A2L R-454B. Contactor + dual cap. Same electrical story as RA16 — wrong refrigerant to top off.

Classic · two-stage · R-410A

Rheem classic two-stage air conditioner (RA17 / WA17). Y1/Y2. R-410A. Not the Endeavor RA17AZ R-454B two-stage.

Endeavor · two-stage · R-454B

Current Rheem Endeavor two-stage on R-454B. Y1/Y2. Same staging as RA17 — wrong refrigerant.

Prestige / Endeavor · inverter AC

Rheem Prestige / Endeavor inverter air conditioner (RA19AY current; RA20 / RA20AY in the field). Outdoor drive + EcoNet when paired. No reversing valve. Charge is weigh-in. Read the refrigerant on the plate — RA20 is often 410A, RA19AY is typically R-454B.

LX · single-stage condensing unit

York LX single-stage air conditioner (YC2E current 14.3 SEER2 class; YCJF / TCJF in the field). Contactor + dual cap. Read the nameplate refrigerant — late YC2E ship R-454B, older YCJF is 410A.

LX · two-stage condensing unit

York LX two-stage air conditioner (YC2F 15.2 SEER2 class). Y1/Y2. Not Affinity YXT and not the YC2E single.

Affinity · two-stage mid

York Affinity YXT two-stage air conditioner. Mid-tier Affinity — two-stage scroll, not the YXV inverter and not the LX YC2F.

Affinity · inverter AC

York Affinity YXV inverter air conditioner. Outdoor drive. No reversing valve. Charge is weigh-in. Not YXT two-stage.

FIT / communicating inverter AC

Daikin FIT inverter air conditioner (DC9VS / DC6VS current; DX17VSS / DX20VC in the field). Outdoor drive + ComfortNet / Daikin One when paired. No reversing valve on the AC FIT. Charge is weigh-in. Read the refrigerant — DX17VSS is 410A, late DC-series may be R-32.

Two-stage condensing unit · 16 SEER class

Daikin two-stage air conditioner (DX16TC / DX18TC). Y1/Y2 or communicating indoor depending on vintage. Not the FIT inverter and not DX13SA single-stage.

Single-stage · contactor + dual cap · R-410A

Daikin single-stage R-410A condensing unit (DX13SA / DX14SN). Contactor + dual cap. Not the current DC5SE R-32 box and not the FIT inverter.

R-32 single-stage · contactor + dual cap

Current Daikin R-32 single-stage condensing unit. A2L. Same contactor physics as DX13SA — wrong refrigerant to top off from a 410A truck.

Comfortmaker / Heil / Tempstar · single-stage · R-410A

ICP-platform single-stage R-410A condensing unit (Comfortmaker N4A5S / N4A4S; Heil H4A5; Tempstar T4A5). Contactor + dual cap. Carrier Comfort-class physics. Not the N5A5S R-454B replacement.

Comfortmaker / Heil / Tempstar · single-stage · R-454B

Current ICP-platform single-stage on R-454B (N5A5S; Heil H5A5; Tempstar T5A5). Contactor + dual cap. Same electrical story as N4A5S — wrong refrigerant.

Comfortmaker / Heil / Tempstar · two-stage · R-410A

ICP-platform two-stage R-410A condensing unit (N4A7T; Heil H4A7; Tempstar T4A7). Y1/Y2. Not N5A8T R-454B and not N4A5S single-stage.

Comfortmaker / Heil / Tempstar · two-stage · R-454B

Current ICP-platform two-stage on R-454B (N5A8T; Heil H5A8; Tempstar T5A8). Y1/Y2. Same staging as N4A7T — wrong refrigerant.