Then press [
UP
] or [
DOWN
] until [
ALL
] is displayed, press [
SET
]
(Lower alarm setting)
Change the value to [
32
] for factory setting, and press [
SET
]
Then press [
UP
] or [
DOWN
] until [
Hy
] is displayed, press [
SET
]
(Differential)
Change the value to [
4
) for factory setting, and press [
SET
]
Do not push any other buttons and let the display return back to normal
operation
Press and hold [
SET
] until F blinks
Change value to [
39
] for factory setting, this will set your set point
Your unit will run between 39˚Fand 43˚F
Now your unit should be working correctly.