What will happen if a low voltage transformer is wired incorrectly in an electronic ignition furnace?

Wiring a low voltage transformer incorrectly in an electronic ignition furnace can potentially lead to shorting the printed circuit (PC) board. This is because incorrect wiring may create a situation where improper voltage or current flows through the sensitive circuits of the PC board. In electronic ignition systems, the PC board controls various functions, including the ignition sequence and safety mechanisms. If excessive voltage or a short circuit occurs due to wiring errors, it can damage the components on the board, leading to malfunction or complete failure of the ignition system.

This type of failure can be catastrophic, as it compromises the entire operation of the furnace. The PC board is crucial for regulating and managing different furnace operations; thus, damaging it could render the system inoperable or cause it to operate unsafely. It's essential to ensure proper wiring during installation to avoid such issues and ensure that the furnace operates correctly and safely.