FieldBench
Carrier codes

Carrier

34 / 14

Lockout

Ignition

HSI / gas / rod. 14 is the hardened 34.

Walk 34 / 14 in Diagnose

5 plates — walk the one on the cabinet

First check

1 Ohms at the igniter, then at the IFC

On Carrier 58CVA 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. Same prove logic as other Carrier IFCs. Fix 31 draft before a fair 34 test.

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

  • HSI, gas, rod, IFC ground.
  • Then the modulating valve offset — a valve that will not come off minimum looks like 34.
  • Do not stage-test it like a two-stage body.
  • HSI, gas, rod, ground.
  • If 32 is also stored, fix low-fire draft before you condemn the igniter.
  • Same prove logic as other Carrier IFCs. Fix 31 draft before a fair 34 test.

Plates that use 34 / 14

Same number, other makers

34 / 14 on Carrier is not the same code on these plates.