An air conditioner water pump control device and control method

Abstract

The invention relates to an air conditioner water pump control device and method. The control device comprises a main controller, an ultrasonic level gauge, a water pump and a water pump operation detection circuit. The ultrasonic level gauge internally comprises a relay, the output end of the water pump operation detection circuit is connected with the main controller, a first signal is output when the water pump is started up, and a second signal is output when the water pump is shut down; the live line input end of the water pump and the live line input end of the water pump operation detection circuit are both connected with a power live line through a normally-open contact of the relay, the zero line input end of the water pump and the zero line input end of the water pump operation detection circuit are both connected with a power zero line, and when the ultrasonic level gauge detects that the water level in a water collection disc exceeds a set threshold value, the relay is powered on; the main controller controls an air conditioner to be shut down according to the first signal when the water pump operates abnormally. The air conditioner water pump control device and methodare used for solving the problems that an existing air conditioner is short in service life and has poor reliability of controlling the water pump.

Description

technical field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner water pump control device and a control method. Background technique

[0002] When the air conditioner is in the cooling and dehumidification mode, a certain amount of water will be deposited in the water receiving tray, and a drainage pump is needed to discharge it outdoors. At present, the water level switch of the air conditioner and the water pump are generally used to drain the indoor unit of the air conditioner. individual control. Usually in cooling mode, even if the water level does not exceed the predetermined water level, the water pump will always be in working condition. Only when the float water level switch sends out an alarm signal, the air conditioner will control the water pump to run for a certain period of time and then shut down the water pump.

[0003] Because the air conditioner does not control the running state of t...

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