Wiring error detection method and device and heating and ventilation device

Abstract

The invention provides a wiring error detection method and device and a heating and ventilation device. The wiring error detection method includes the steps that state parameter curves corresponding to all operation modes for a household appliance are stored in advance; the real-time operation mode and real-time state parameter curve of the household appliance are obtained within a preset time period of operation after the household appliance is started; the real-time state parameter curve is compared with the state parameter curves, and whether wiring of multiple electronic expansion valves in the household appliance is correct or not is judged according to a comparison result. According to the technical scheme, whether wiring of the electronic expansion valves of the household appliances with the electronic expansion valves or not can be rapidly detected, when wiring errors happen on the electronic expansion valves, through adjusting the control logic of the electronic expansion valves, the household appliance has a fault-tolerant function and can till work normally, and stability and safety of a system are improved.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a wiring error detection method, a wiring error detection device and a heating and ventilation equipment. Background technique [0002] At present, electronic expansion valves are installed in most household appliances that include a compressor system to adjust the liquid supply volume of the evaporator, such as air source heat pump water heaters. [0003] For heat pump water heaters installed with multiple electronic expansion valves of the same specification, when replacing multiple electronic expansion valves during assembly or maintenance at the factory, the , and the appearance are all the same, so the power wiring of multiple electronic expansion valves (such as the connecting wire body driven by the main control board) is prone to wiring errors. The factory inspection is relatively simple, and it is difficult to detect the wiring error of the elect...

AI Technical Summary

Problems solved by technology

[0003] For heat pump water heaters installed with multiple electronic expansion valves of the same specification, when replacing multiple electronic expansion valves during assembly or maintenance at the factory, the , and the appearance are all the same, so the power wiring of multiple electronic expansion valves (such as the connecting wire body driven by the main control board) is prone to wiring errors. The factory inspection is relatively simple, and it is difficult to detect the wiring error of the electronic expansion valve in a short period of time. Once there are multiple electronic expansion valve wiring errors, it will definitely cause the failure of the heat pump water heater system

In view of the fact that multiple electronic expansion valves are prone to wiring errors, at present, it is mainly to distinguish multiple different electronic expansion valves by labeling, or by winding the connecting wire body to distinguish multiple different electronic expansion valves. Although these two methods Multiple electronic expansion valves can be distinguished to a certain extent, but there is still a hidden danger of wrong wiring in actual use

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