Trane
E6.x
LockoutIgniter / gas valve circuit family (door-card confirm)
HSI or gas-valve electrical family. Confirm the exact decimal on THIS door card / service facts.
Walk E6.x in Diagnose
2 plates — walk the one on the cabinet
First check
1 Ohms at the igniter, then at the IFC
On Trane S8V2 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. HSI ohms cold 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
- HSI ohms cold and 120 VAC during warm-up.
- Valve coil ohms and 24 VAC at the Molex during trial.
- Harness rub-through on the collector. Rain-shield drip on the IFC will throw garbage in this band.