Fault detection circuit for air conditioner compressor

Abstract

The invention discloses a fault detection circuit for an air conditioner compressor. The fault detection circuit comprises a compressor driver and a detection circuit connected with a three-phase output terminal of the compressor driver; and the detection circuit comprises a first light-emitting circuit, a second light-emitting circuit and a third light-emitting circuit, the first ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are correspondingly connected with one corresponding phase of the three-phase output terminal, and thesecond ends of the first light-emitting circuit, the second light-emitting circuit and the third light-emitting circuit are mutually connected. According to the fault detection circuit for the air conditioner compressor, the three-phase voltage phase sequence of the compressor driver is utilized, the three-phase output end is externally connected with the detection circuit, maintenance personnel can visually and rapidly confirm whether the compressor driver breaks down or not according to the light-emitting conditions of the three light-emitting circuits of the detection circuit, the fault detection speed of the air conditioning unit for the compressor and the driver is increased, problems do not need to be confirmed by replacing parts, the part replacing time is saved, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an air conditioner compressor fault detection circuit. Background technique [0002] When the air-conditioning unit reports a fault related to the compressor and the drive, it is impossible to accurately and quickly determine whether it is a problem with the compressor or the drive. [0003] In the prior art, it is necessary to use various troubleshooting methods to confirm the problem. Such methods require maintenance personnel to dismantle the machine for inspection and test multiple fault points one by one, and it takes a lot of time to confirm the fault. [0004] When the unit has an abnormal alarm related to the driver, and it cannot be confirmed that it is a problem with the compressor or the driver, connect the detection box to the output terminal of the driver. After starting up, the output signal of the detection box can immediately determine whether the driver...

AI Technical Summary

Problems solved by technology

[0002] When the air conditioner unit reports a fault related to the compressor and the drive, it is impossible to accurately and quickly determine whether it is a problem with the compressor or the drive

[0003] In the existing technology, it is necessary to use various troubleshooting methods to confirm the problem. This kind of method requires maintenance personnel to disassemble the machine and test multiple fault points one by one. It takes a lot of time to confirm the fault.

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