The good news is that if the box is holding 40 degrees, you're still in the safe range.
A lot can depend on the surrounding environment and the temperature of the product that was placed in them. If you are selling and constantly refilling the box (meaning it's opened and closed a lot), that can also affect the box temperature and 40 degrees isn't bad and is in the range of most health regs.
Make sure the condenser is kept clean and if possible, that the box isn't sitting too close to other heat producing appliances.
The lower end of these type of appliances is around 33 degrees, but they rarely get that cold unless they are empty, the top stays closed for 12+ hours and they are sitting in a cold environment.
Proably has small freon leak and that will cause it not to cool well just like a car that is low on freon.
You might be able to add freon and it may last for awhile but you might want to pay a good service shop for a leak repair.
Usually the leak is a tiny tiny tiny pin hole in the evaporator. Some times you can repair them but if the unit is over 7or 8 years old replacement is best.
Answers & Comments
The good news is that if the box is holding 40 degrees, you're still in the safe range.
A lot can depend on the surrounding environment and the temperature of the product that was placed in them. If you are selling and constantly refilling the box (meaning it's opened and closed a lot), that can also affect the box temperature and 40 degrees isn't bad and is in the range of most health regs.
Make sure the condenser is kept clean and if possible, that the box isn't sitting too close to other heat producing appliances.
The lower end of these type of appliances is around 33 degrees, but they rarely get that cold unless they are empty, the top stays closed for 12+ hours and they are sitting in a cold environment.
Proably has small freon leak and that will cause it not to cool well just like a car that is low on freon.
You might be able to add freon and it may last for awhile but you might want to pay a good service shop for a leak repair.
Usually the leak is a tiny tiny tiny pin hole in the evaporator.
Some times you can repair them but if the unit is over 7or 8 years old replacement is best.