LPER alarm code appears on the refrigeration unit, probably the expansion valve is blocked by ice

The phenomenon of ice blockage of the expansion valve :
1, Most of the goods in the box are frozen or pulling goods below zero
2, First period, refrigeration units are cooling down normally, shut down after a period of rest or after the end of the cold machine defrost to refrigeration mode, found that the truck refrigeration machine does not cool down for a long time.
3, The van&truck refrigeration units display a low-pressure alarm (alarm code LP/LPER/A01, etc.) or the refrigeration units do not cool down for a long time, with no alarm.

What is the compressor seized up?

The compressor made violent harsh noises, the electromagnetic clutch was burnt, the load of the variable displacement compressor was broken, and it could not operate normally.

Why does the compressor seize up?

1, Compressor quality is not good.
2, There are Impurities in the system
3, The system lacks oil or does not return smoothly
4, Lubricant oil is not working (need to change new lubricant oil
 

Your cargo is your business and you must do what needs to be done to protect that cargo and delivery your good on time and in prime condition.
You service your delivery van but never forget the truck&van refrigeration equipment.
If you want your equipment to deliver your goods time after time then follow the right preventive checks
We have produced a simple step-by-step maintenance guide.

Cold chain logistics refers to a system of refrigeration and frozen food in the production, storage, transportation, and sales, to the various aspects of pre-consumer always in the specified low-temperature environment to ensure food quality and reduce food loss.

Refrigerated truck is equipped with an insulated boxes and refrigeration unit device, used for cold chain logistic.

Refrigeration truck is not a cold storage, In fact, the refrigeration unit is used to maintain the temperature of the goods, not to down the temperature of the goods.