The United States after the cold and warm type 3P air conditioning power, why compressor direct operation?
1, the first electric compressor direct operation should lock is the main control unit of air conditioner is abnormal, control element relay, AC contactor fault such as variable frequency and constant press start, there may be the occurrence of the main control board programming errors caused by this phenomenon;2, it is recommended to check the outdoor air conditioner, computer board, to see if the main control panel of electrical appliances are abnormal, or whether there is moisture, dust short circuit may;3, the above reasons, if the investigation is completed without exception, then have to air-conditioning manufacturers after-sales repair, call home repair.
The main control parts of the air conditioner are abnormal. For example, the relays that feed the compressor, the AC contactor and other switches are out of order, the main control panel is out of order, the main board is damp and dusty, and so on.It is suggested that the electrical control parts of the air conditioner should be checked. If there is any abnormal situation, it is recommended that the air-conditioning manufacturer be repaired after the sale.
After the air conditioner is energized, the compressor works immediately, and the fault location can be located in the standby circuit unit. Analysis follows:1. The normal air conditioner is designed to plug in the power plug and the device is in standby mode. Operated by the user remote control, or operated on the control panel of the boot button, air conditioning operation as instructed;2, when the standby control circuit, power supply circuit of the host device (possibly electronic switch, may also be a relay, and related models), short circuit fault, due to short circuit power supply through the motor, compressor will power transfer;3, if the refrigeration, heating work properly. Remote control can be used to control the downtime, if you can perform the shutdown, boot instructions, and most of the components to drive the implementation of devices (such as power tubes, IC) performance deterioration (soft damage) can be replaced;4, on the contrary, the remote controller is operated on or off, that is, the actuator and the actuator may be damaged, that is, the component is hard damaged, causing the power supply straight through phenomenon;5, this kind of fault, the experience can be combined with the circuit system control principle, through the remote control operation, observe the controlled performance of the device, you can analyze the fault location. Such as remote control, test and diagnosis, only the "open" and "off" key does not work, other keys are normal, the above reasons must be analyzed. If all the keys are not controlled and the remote controller is out of order, the main control circuit is in the list of suspected objects, with the focus being on the microcontroller out of control.
