4828-0100594

: Take high-resolution photos of all wiring connections before disconnecting the old board. Label individual wires if they are not already color-coded or tagged.

If you are replacing this board, follow these industry-standard steps: 4828-0100594

: Disconnect all power sources to the HVAC unit. Large industrial systems may have multiple power feeds; verify with a voltmeter. : Take high-resolution photos of all wiring connections