It's broken, please call to repair it. I need you to remove the inner panel. The reference of mitsubishi electric air-conditioning fault code here is the reference photo of mitsubishi electric air-conditioning fault code next to the filter screen. Maybe the wire is broken and the contact is poor. The computer board of indoor unit or outdoor unit is faulty.
Mitsubishi air conditioner gives a green light, and the yellow light keeps flashing. What happened?
The reason and solution of Mitsubishi air conditioner starting the green light normally: the yellow light keeps flashing.
1. First, check whether the compressor is running, and measure whether the outdoor wiring board (1) and (2) have power supply voltage. If not, check whether the thermistor and the heat exchanger thermistor are normal. If not, replace the thermistor, for example, check the indoor PCB normally.
2.① ~ ② If the voltage is normal, short circuit 5 1C, and check whether the compressor is running. If it is abnormal, check whether the compressor cylinder is stuck, whether the motor is disconnected and whether the compressor capacitor is normal. If it is abnormal, replace the capacitor or compressor.
3, short circuit 5 1c compressor running, 5 1c broken (compressor overload protector, 5 1c will not recover after running for about 1 hour), then check whether the air supply circulation is smooth (air conditioning: check whether the outdoor air filter is dirty, indoor air filter is dirty), and check whether there is too much refrigerant.
Investigation on the corresponding fault of Mitsubishi air conditioning indicator light
When the light is on, the causes and treatment methods of the fault are as follows:
1, when the light is on, the phase sequence of the power supply is wrong, and the phase reversal prevents the action. At this time, if any two relative switching modes of three-phase power supply can turn off the 1 lamp, the unit can be started. Faults generally occur at the first startup after installation, and will not occur during normal operation.
2, light, low pressure is insufficient, to check the suction and discharge pressure, such as adding refrigerant, may be too much refrigerant.
3, light, high pressure, fluorine-free. At this time, it is necessary to check the leakage of the unit, repair the leakage part, and add an appropriate amount of refrigerant. The light is on and the temperature sensor is broken. The thermostat is damaged or has poor contact. When 1, 2, 3 and 4 lights are all on, it is the control failure of the external machine panel or the transformer is burnt out.