FieldBench
Daikin codes

Daikin

E7

Lockout

Igniter / no-ground

Open or cracked HSI, bad igniter connection, or missing equipment ground.

Walk E7 in Diagnose

4 plates — walk the one on the cabinet

First check

1 Ohms at the igniter, then at the IFC

On Daikin DM80VC measure cold ohms at the igniter plug, then at the IFC connector. An open at the plug is the element or local harness. Open only at the IFC is the harness rub-through on the collector. Igniter ohms and 120 VAC during warm-up.

Expect: Nitride cold ohms per THIS door sticker — do not use an 80% Norton chart.

The rest of the walkthrough is Diagnose.

On the plates

  • Igniter ohms and 120 VAC during warm-up.
  • IFC and burner-box ground.
  • Ohms, 120 VAC during trial, ground screw.

Plates that use E7

Same number, other makers

E7 on Daikin is not the same code on these plates.