Your control panel has limited selection
On/Off button
Mode Button...selects AUTO when depressed and GAS when not depressed
Automatic Refrigerator Temperature Control (No Temp Settings)
AUTO Mode (Auto Light ON)
120VAC has priority when AC Power is available
If 120VAC power is lost...auto mode swaps to GAS operation
Swaps back to AC when Power is restored
**If GAS fails to light/prove it lit-----CHECK Light comes on
GAS Mode (Auto Light OFF)
Operates on GAS regardless if AC is available or not
Does NOT swap to AC if GAS Fails....just get the CHECK Light