FieldBench
Daikin codes

Daikin

EE

Lockout

Bus / internal

ComfortNet / Daikin One data dropped, or (on some dates) no 115 V / internal IFC fault. Stat English tells you which.

Walk EE in Diagnose

4 plates — walk the one on the cabinet

First check

1 Measure at the IFC under load

On Daikin DM80VC line-voltage codes are incoming power. Measure L1/L2 (or L1/N) at the board while it is trying to run, not just at the disconnect. Data pair polarity and splices. This is not 24 V Y.

Expect: Voltage in the rating-plate window under load.

The rest of the walkthrough is Diagnose.

On the plates

  • Data pair polarity and splices. This is not 24 V Y.
  • Only one communicating master. Leftover data wires landed on R/C after a 24V conversion.
  • Door switch, disconnect, and 115 V at the IFC if the display is dark / EE on power-up.
  • Data pair, one master, outdoor on the same bus.
  • Same wiring rules as DM96VC — the valve type does not change the bus.

Plates that use EE

Same number, other makers

EE on Daikin is not the same code on these plates.