FieldBench
Wiring

Infinity / Evolution inverter HP

ABCD + RV / defrost on the drive

ABCD + RV / defrost on the drive

25VNA4 / 280ANV. Same ABCD as 24VNA6 — plus a reversing valve and defrost on the outdoor drive.

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

ABCD heat pump

Infinity / Evolution HP outdoor.

Infinity / Evolution wall control

Four-wire ABCD. D is 24V hot, not Y.

  • ADataData
  • BDataData
  • C24V common24V
  • D24V hot — not a cool call24V

Infinity / Evolution indoor

Same ABCD. Indoor CFM is serial. A Comfort 59SC5 does not belong here.

  • ADataData
  • BDataData
  • C24V common24V
  • D24V hot24V

Outdoor communicating drive

ABCD (or the outdoor comm harness). No Y contactor. No dual cap.

  • ADataData
  • BDataData
  • C24V common24V
  • D24V hot — still not Y24V

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

  • DataABCD throughout

    Data + 24V C/D. No O/B stat wire on most of these.

  • 24VRV and defrost

    On the outdoor drive. Not a furnace function.

Prove it

  • Same ABCD prove as 24VNA6, then confirm this plate is the HP (RV + outdoor coil sensor).

Do not

  • Do not use this on 24VNA6 / 191VAN. Those have no RV.
  • Do not charge it like a 24ACC6 piston unit.

Included so the HP twin is not silently reused as the AC diagram.

Plates on this landing