Virtual furnace: stop before the ignition verdict
Original fictional furnace controller F-TRAIN. Supplied event and input logs; no live appliance or gas operation.
Customer says: The blower ran, but there was no flame. Is the gas valve bad?
F-TRAIN is an original teaching controller. Its sequence contract is supplied below and is not an OEM service sequence.
Tests you can run
- Read F-TRAIN identity and sequence contract
- Read the controller event and input log
- Read the alternate matched input summary
- Read the independent same-attempt observation
- Read the unrelated fuel inventory note
- Read the owner's earlier sound description
- Read the real-equipment reference caution