Press "system" on the left side of the screen to enter installer setup.
Press and hold the third and fifth button on the bottom of the screen until the display changes. Note on the left side you'll see four digits; this is the function code. On the right you will see another number, which is the setting number.
Press the up or down arrow on the right side of the function code to scroll through the function numbers. Stop when you reach 0530.
Press the up or down arrow on the right side of the setting number to scroll through the numbers. There should only be two. 1 = On. 0 = Off. Set the code to 0.
Press the "Done" button on the far left bottom to save the setting and exit the system.