FieldBench
Models
Rheemac

RA19AY

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.

Not RA17 / RA17AZ two-stage. Not RA16 / RA14AZ contactor. Not a heat-pump RP series (RV + defrost).

Diagnose this modelInstall notesBoard cross-refField wiring

Drive

Inverter scroll · variable capacity

Bus

EcoNet when the indoor talks; 24V on mixed jobs

Charge

Weigh-in + line-set. Match the nameplate refrigerant.

This board

Prestige outdoor inverter — AC only

  • EcoNet events / outdoor drive. Indoor 45/46 is the furnace.
  • No dual cap. No defrost.
  • RA20 vs RA19AY — same inverter idea, read the refrigerant letter.

EcoNet last events. Drive last-fault if the stat is blank.

Universal swap

No universal

Rheem RA19AY outdoor. No furnace IFC universal. Replace the OEM outdoor control / contactor / drive by the silk.

Silk: RA19AY

White-Rodgers

—

ICM

—

Honeywell

—
  • Indoor furnace universals (50A55, 50M56U, ICM282B, ICM2811, S9200U). This is not an IFC.
  • Do not ‘adapt’ a furnace board to an outdoor inverter, defrost PCB, or contactor.

After you pull the dead card

  1. 1Photograph the outdoor silk. Indoor 50A55 / ICM282B / S9200U do not belong here.
  2. 2Contactor units: replace the contactor / cap / HPS — there is no universal outdoor board.
  3. 3Inverter / communicating outdoors: OEM drive only. There is no White-Rodgers or ICM outdoor universal.

Field wiring

Written landings for Rheem RA19AY. Not a factory schematic.

EcoNet inverter AC
E1 / E2R-454B · A2L

Rheem / Ruud RA19AY Prestige. EcoNet on E1 and E2. RA14AZ / RA16 / RA17 are 24V — different diagrams.

Written circuit description only — FieldBench does not redraw maker schematics. Example: R to W closes on a heat call; verify 24V at W1 before you change the IFC.

Open manufacturer PDF

This indoor

EcoNet indoor (R96V class). R96T 24V is a mixed pair.

EcoNet pair

EcoNet control and a communicating indoor.

EcoNet control

E1 / E2 data. R and C still feed the control.

  • R24V hot24V
  • CCommon24V
  • E1EcoNetData
  • E2EcoNetData

Communicating indoor

R96V / matching AH on EcoNet. R96T 24V is a mixed pair.

  • E1EcoNetData
  • E2EcoNetData

Prestige outdoor

Inverter. No dual cap.

  • E1EcoNetData
  • E2EcoNetData

Outdoor line — inverter drive

208/230 into the drive. No contactor slam. DC bus can stay live after the disconnect.

  • L1Line to the driveLine
  • L2Line to the driveLine
  • GNDEquipment groundLine

Landing

  • DataControl E1/E2indooroutdoor

    EcoNet data. Not Y.

  • LineL1 / L2drive

    208/230

Prove it

  • EcoNet control sees the outdoor.
  • E1 / E2 polarity per the silk on THIS outdoor.

Do not

  • Do not apply this to RA14AZ / RA16 / RA17.
  • Do not land 24V Y on E1.

E1 / E2 are the published EcoNet pair.

Sequence

  1. 1

    Call

    Indoor requests capacity. Inverter ramps.

  2. 2

    Protect

    HPS / LPS / drive. No defrost.

Faults on this IFC

Step 1, then 2, then 3. Expected reading and the fail branch sit under each check.

Comm

ABCD / outdoor drop

lockout

Drive or bus. Wall control loses the outdoor.

  1. 1 Let it cool, then read the drive LED

    On Rheem RA19AY overcurrent / overheat is often a dirty coil, a failed OD fan, or a locked compressor — not a dead inverter. Clear airflow, confirm the OD fan, and read the drive LED before you order a control. ABCD landing and polarity, outdoor board power, inverter comms harness.

    Expect: OD fan running. Coil clean. Drive LED decoded from THIS outdoor’s card.

  2. 2 Voltage and compressor windings

    Incoming voltage in range (this plate’s line-voltage code). Compressor windings even, no ground. A shorted compressor will kill a new drive. C still required at the wall control.

    Expect: Balanced windings. No winding to ground. Line voltage stable under load.

  3. 3 Charge and the drive last

    A starved or flooded compressor will overcurrent. Confirm SH/SC and charge weight. Only then condemn the inverter. Indoor must be Infinity-capable. A 24ACC6-style indoor pairing is the wrong mental model.

    Expect: Charge on the nameplate. Drive code gone after a cool-down and a clean coil.

HPS / LPS

Pressure protection

lockout

Still real on an inverter.

  1. 1 Let it cool, then read the drive LED

    On Rheem RA19AY overcurrent / overheat is often a dirty coil, a failed OD fan, or a locked compressor — not a dead inverter. Clear airflow, confirm the OD fan, and read the drive LED before you order a control. Coil, fan, charge by weigh-in — you do not ‘top off’ a Greenspeed.

    Expect: OD fan running. Coil clean. Drive LED decoded from THIS outdoor’s card.

  2. 2 Voltage and compressor windings

    Incoming voltage in range (this plate’s line-voltage code). Compressor windings even, no ground. A shorted compressor will kill a new drive. Outdoor fan that is actually the inverter-driven fan, not a dual-cap PSC motor.

    Expect: Balanced windings. No winding to ground. Line voltage stable under load.

  3. 3 Charge and the drive last

    A starved or flooded compressor will overcurrent. Confirm SH/SC and charge weight. Only then condemn the inverter. Do not use 24ACC6 piston superheat as the pass/fail.

    Expect: Charge on the nameplate. Drive code gone after a cool-down and a clean coil.

Inverter

Drive overcurrent / overheat

lockout

L5/L4-class faults on the drive.

  1. 1 Let it cool, then read the drive LED

    On Rheem RA19AY overcurrent / overheat is often a dirty coil, a failed OD fan, or a locked compressor — not a dead inverter. Clear airflow, confirm the OD fan, and read the drive LED before you order a control. Compressor to ground, heat sink, supply voltage. Weigh-in vs nameplate.

    Expect: OD fan running. Coil clean. Drive LED decoded from THIS outdoor’s card.

  2. 2 Voltage and compressor windings

    Incoming voltage in range (this plate’s line-voltage code). Compressor windings even, no ground. A shorted compressor will kill a new drive. These L-codes do not exist on 24ACC6. If you are looking at a contactor, you are on the wrong outdoor.

    Expect: Balanced windings. No winding to ground. Line voltage stable under load.

  3. 3 Charge and the drive last

    A starved or flooded compressor will overcurrent. Confirm SH/SC and charge weight. Only then condemn the inverter.

    Expect: Charge on the nameplate. Drive code gone after a cool-down and a clean coil.

Workflows

Silent RA19AY

Indoor calling, outdoor not ramping.

  1. 1 Prove the call and the live code

    Drive / EcoNet events. No contactor to chase.

    Expect: Write whatever Prestige outdoor inverter — AC only is showing. EcoNet last events. Drive last-fault if the stat is blank.

    If fail: No call at the IFC → stat / harness. Do not change gas parts.

  2. 2 Isolate the first failed step in the sequence

    Weigh-in on the refrigerant that is on THIS plate.

    Expect: Protect: HPS / LPS / drive. No defrost.

  3. 3 Confirm with a number, then the next part

    RP / heat-pump twins have an RV. This AC does not.

    Expect: Charge: Recover and weigh. Nameplate + ounces/ft. Not piston SH. · ABCD: Communicating to the Infinity indoor / 59MN7 family. D is not Y.

    If fail: Stay on this plate. The out-of-range reading is the part.

    If pass: Reading in range → the next step in this workflow is the repair.

Test points

Charge

Recover and weigh. Nameplate + ounces/ft. Not piston SH.

ABCD

Communicating to the Infinity indoor / 59MN7 family. D is not Y.

Drive

Inverter LEDs / last fault. No contactor coil 24 VAC test.

Gotchas

  • RA20 on an older invoice is this inverter family. Confirm 410A vs R-454B before you recover.

Related plates

Install this plate

Install Rheem RA19AY as Prestige / Endeavor · inverter AC.

Prestige / Endeavor · inverter AC

This plate — not the sister SKU

  • Not RA17 / RA17AZ two-stage. Not RA16 / RA14AZ contactor. Not a heat-pump RP series (RV + defrost).
  • RA20 on an older invoice is this inverter family. Confirm 410A vs R-454B before you recover.

Control on this outdoor

  • EcoNet events / outdoor drive. Indoor 45/46 is the furnace.
  • No dual cap. No defrost.
  • RA20 vs RA19AY — same inverter idea, read the refrigerant letter.

Hardware

  • Drive: Inverter scroll · variable capacity
  • Bus: EcoNet when the indoor talks; 24V on mixed jobs
  • Charge: Weigh-in + line-set. Match the nameplate refrigerant.

First fire

  1. 1Drive / EcoNet events. No contactor to chase.
  2. 2Weigh-in on the refrigerant that is on THIS plate.
  3. 3RP / heat-pump twins have an RV. This AC does not.

Do not on Rheem RA19AY

  • Not RA17 / RA17AZ two-stage. Not RA16 / RA14AZ contactor. Not a heat-pump RP series (RV + defrost).
  • RA20 on an older invoice is this inverter family. Confirm 410A vs R-454B before you recover.

Maker literature

FieldBench does not host manufacturer files. Each link opens the maker’s own literature page in a new tab.

  • Rheem residential furnacesLiterature searchR96T / R96V / R801V / R802V / R98MV product cards. I/O is typically MyRheem / PTS dealer.Open manufacturer PDF
  • Rheem supportLiterature searchOwner docs and registration. Full I/O is not hosted as a public PDF for most Endeavor plates.Open manufacturer PDF

Warranty and bulletins

Affected models, serial range, symptom, remedy, date. Maker files open on the manufacturer site.

All bulletins

  • Residential limited warranty

    dealer

    Rheem furnace warranty

    Registered Endeavor / Classic furnace warranty · Dealer claims portal

    Open factsOpen manufacturer PDF

  • Dealer portals

    dealer

    Where remaining service letters live

    Current-year service letters not on a public literature page · Maker dealer portal

    Open factsOpen manufacturer PDF