FieldBench

Daikin

DX13SA

AC · 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.

Not DC5SE (R-32). Not DC9VS FIT. Not DX16TC two-stage.

Walk this in Diagnose

This plate

Refrigerant
R-410A
Stages
Single-stage · one Y

This board

Contactor + fan · R-410A

  • No outdoor 7-seg.
  • Plate R-410A. DC5SE is R-32.

Sequence

  1. Y. 24 VAC at the contactor coil → compressor and outdoor fan. Indoor blower on the cool tap / G.

Faults on this IFC

  • No Y

    Outdoor silent

    warn

    No 24 VAC at the contactor or the coil is open.

    • Y and C at the outdoor. Indoor IFC / stat actually closing Y.
    • Contactor coil ohms. Do not confuse a furnace lockout with a dead outdoor.
  • Hum / no start

    Cap / start

    lockout

    Compressor hums, outdoor fan may run.

    • Dual cap (fan and herm). Replace on values, not just a bulge.
    • Hard-start only after the cap and windings are proven.
  • HPS

    High pressure

    lockout

    Outdoor airflow, overcharge, or restriction.

    • Fan running? Coil dirty? SC vs nameplate on a TXV coil.
  • LPS / freeze

    Low pressure

    lockout

    Charge, indoor airflow, metering.

    • Do not add gas on a frozen coil. Indoor filter/coil first.

Workflows

No cool, DX13SA

Indoor running, outdoor dead.

  1. 24 VAC at the contactor.
  2. Dual cap, then 410A SH or SC.
  3. DC5SE on the plate = other refrigerant.

Test points

Charge
Nameplate + line-set. SH on piston, SC on TXV.
Cap
Dual can. Fan and herm both in spec.

Gotchas

  • DC5SE is the current R-32 single. Same cap story, wrong cylinder.

Related plates