Reprogramming the Temperature Ranges:
The default temperature ranges can be modified to suit your wine and beverage storage preferences; minimum temperature of 34°F (lower zone)/41°F (upper zone) and a maximum of 72°F (both zones).
1. Press and hold the Light & Set buttons simultaneously for 15 seconds until you hear a beep. Then release the buttons.
2. Press the Light button (only) to select the zone. The zone will show in the left display window and the temperature will show in the right display window .
a. P01: the lowest temperature of upper zone
b. P02: the highest temperature of upper zone
c. P03: the lowest temperature of lower zone
d. P04: the highest temperature of lower zone
3. Use the left + and left – buttons to adjust the temperature
4. Repeat the steps in #2 and #3 for each setting you want to change
5. The operating panel will automatically exit programming mode after being idle for 10 seconds.
LIGHT ON/OFF TOGGLE:
Please refer to the enclosed drawing which mentions the height.
As to the light function. We have two modes for option. One is turn off after 10 mins, the other one is manual control to turn on or off.
To toggle this modes, just need to press the 
SET button and hold it for around 3-5 seconds till you hear two beeps or three beeps:
Two beeps: Manual on /off
Three beeps: Eco mode (turn off after 10 minutes)
For the dims highlighted in yellow:
1956: product height
1962: recommend installation height
683: product depth (with door)
727: production depth with door handle
752: recommend installation depth
***Please also refer to the attached diagram.