Hisense inverter air conditioner is well-known, and this brand of air conditioner has a high sales volume in the market, which is a relatively energy-saving air conditioner. Hisense inverter air conditioner will also have various failures after long-term use, and failures are the most common problems when we use air conditioners. When the air conditioner breaks down, we can check where the problem is, see what the root cause is, and then deal with and solve the problem in a targeted manner. Next, let's take a look at the faults and maintenance of Hisense inverter air conditioner.

First of all, there is no electricity

1, check whether the power supply voltage is stable; Whether the phase sequence is correct; Whether the power cord diameter, switch and socket capacity match; Whether the wiring is firm; On the power plug attached to the air conditioner, there are the following signs: "L"-live wire; "n"-center line; "〨"-protective grounding wire? ; These signs remind us that the user's power supply must be consistent with the company's power plug sign: the phase sequence must be left zero and right fire, which can be well grounded. These measures can effectively avoid the induced voltage in the air conditioner shell and prevent external interference. The power detector can detect whether the user's power supply is short of neutral wire, protective grounding wire, correct wiring, reverse connection, live grounding wire and other single power supply wiring errors.

2. Carefully check whether the power socket or open wire of the air conditioner is in good contact with the incoming power switch in the user's home. If the power supply voltage is normal, but the wiring contact is poor, it is easy to cause the air conditioner to be used normally sometimes and shut down automatically sometimes;

3. Check whether the capacity of the user's power cord is sufficient, mainly for the power cord installed by rural self-built users and users privately. The unstable power supply voltage or too thin power cord will lead to the phenomenon that the automatic protection stops after the air conditioner runs or cannot be started due to too large starting current.

Second, the internal machine is normally powered on and the external machine does not work.

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2. If the debugging internal machine works normally and the external machine doesn't work, conduct fault self-inspection through the air conditioner at this time, and determine the maintenance direction according to the fault code; At this time, please pay attention to the fault self-check after the air conditioner is turned on. Press the high-efficiency key (or sensor on key) on the remote controller for three times continuously, and the Kelon remote controller presses the sleep key or strong key for three times continuously, and displays the fault code in the temperature zone according to the data sent by the CPU of the indoor unit. When the fault code is displayed, the number flashes, and when there is no fault, it displays zero, and the display time is about ten seconds.

Three, how to judge the control and main circuit fault

1. For the frequent startup and shutdown of the compressor, the fault location can be determined by measuring the load voltage of the air conditioner and the running current of the compressor. If the running current of the compressor is too large, the fault lies in the main circuit; If the working current of the compressor is normal, the fault lies in the control circuit.

2. If the compressor does not start when the fan is running, the fault location can be determined by observing whether the outdoor AC contactor is attracted. If the contactor closes, the compressor does not work, and the fault lies in the main circuit; If the contactor is not closed, the fault is in the control circuit. For variable frequency air conditioner, the press does not start, and the fault can be eliminated by detecting the power module.

Four, how to judge the control and main circuit fault?

A. Measure whether indoor and outdoor protection elements are normal, and judge the fault area. If the protection element is normal, the fault is in the control circuit; If the measuring protection element is damaged, the fault appears in the main circuit.

B. If the compressor can't run, you can also observe whether the compressor can cool normally by forcibly pressing the contactor. If the compressor can still operate refrigeration after pressing the contactor, the fault lies in the control circuit; If the contactor compressor is pressed or not started due to overcurrent, the fault appears in the main circuit. (This method cannot be used for variable frequency compressors)

C frequent startup failures of the compressor, such as high temperature of the compressor shell, are mostly caused by the main circuit or the compressor itself.

D, for inverter air conditioners, it can be judged by the fault indicator light of the air conditioner, such as EEPROM, power module, communication fault, etc.

Hisense inverter air conditioner is prone to power failure. When this problem occurs in our air conditioner, we need to check our wiring to see if the power cord and some wiring are misplaced. In that case, connect the wiring back. But it's best to invite some professional air-conditioning maintenance masters to check and repair, because it's easy to get an electric shock if you mess around. In addition, be careful not to install the air conditioner in some damp places.

The above is the related content of Hisense inverter air conditioner fault, I hope it will help everyone! ?

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