Exhaust temperature sensor loose fault detection method and device and air conditioner

Abstract

The invention provides an exhaust temperature sensor disengagement fault detection method and device and an air conditioner. The exhaust temperature sensor disengagement fault detection method comprises the steps that when the air conditioner is started for cooling or heating running, the outdoor environment temperature is detected, the running frequency of the compressor is set according to the outdoor environment temperature, and the initial exhaust temperature of the compressor is detected; and when the running frequency of the compressor is higher than first preset frequency, whether an exhaust temperature sensor has a disengagement fault or not is judged according to a difference value between the exhaust temperature, detected after the air conditioner is started to run for a first preset time, of the compressor and the initial exhaust temperature of the compressor. According to the technical scheme, whether the exhaust temperature sensor has the disengagement fault or not is judged according to the changing condition of the exhaust temperature, therefore, working parameters of the air conditioner can be adjusted in time or a user can be reminded to check whether the exhaust temperature sensor has the disengagement fault or not in time when the disengagement fault is generated, and the condition that the overall air conditioner generates irreversible damage or the performance is reduced is prevented.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and more specifically, to a method for detecting an exhaust temperature sensor loose fault, a device for detecting an exhaust temperature sensor loose fault, an air conditioner, a computer device, and a computer readable storage media. Background technique [0002] At present, many inverter air conditioners adjust the frequency by detecting the exhaust temperature of the compressor. If the machine uses an electronic expansion throttling device, the opening of the electronic expansion valve will be adjusted according to the detected exhaust temperature. So that the air conditioner is in the optimal operating state. General manufacturers will clamp the discharge temperature sensor on the compressor discharge pipe to prevent it from falling off, but it cannot be ruled out that the discharge temperature sensor will be loose due to accidents during transportation and installation. I...

AI Technical Summary

Problems solved by technology

General manufacturers will clamp the discharge temperature sensor on the compressor discharge pipe to prevent it from falling off, but it cannot be ruled out that the discharge temperature sensor will be loose due to accidents during transportation and installation

If it is loose, the exhaust gas temperature detected by the system will remain at a low level (close to the ambient temperature) for a long time, and the electronic expansion valve will receive a wrong command, and the opening will always decrease. In this way, the compressor The actual exhaust temperature will be much higher than the normal value. If there are no corresponding protection measures, the exhaust temperature will be too high, the internal temperature of the compressor will be too high, the cooling effect will decrease, and even the compressor body will be damaged.

Images