Why is the air conditioner not turning on and the indicator light keeps flashing?
2024-10-10
I. Excessive stains on air conditioning filter
Due to excessive stains on the air conditioning filter, the cold air from the indoor unit cannot be blown into the room normally, making the temperature of the indoor unit very low and causing icing in the indoor unit.
Solution:
Due to excessive stains on the air conditioning filter, the cold air from the indoor unit cannot be blown into the room normally, making the temperature of the indoor unit very low and causing icing in the indoor unit.
Solution:
- Unplug the power plug of the air conditioner.
- Clean the air conditioning filter with a towel.
II. Outdoor phase loss or phase sequence protection
If there is outdoor phase loss or phase sequence protection, both the timer light and the power light will flash. And the flashing frequency of both lights is once every 0.5 seconds.
Solution:
If there is outdoor phase loss or phase sequence protection, both the timer light and the power light will flash. And the flashing frequency of both lights is once every 0.5 seconds.
Solution:
- Check whether there is a problem with each line. If there is a problem, replace it.
- Check whether the compressor has a fault. If there is a problem, replace it.
III. Excessive voltage
Sometimes excessive voltage in our home will cause the air conditioner to be overloaded. At this time, the air conditioner will start the self-protection system, and the indicator light will keep flashing, accompanied by the phenomenon of turning on and off.
Solution: Since a transformer needs to be replaced, ask professionals for help.
Sometimes excessive voltage in our home will cause the air conditioner to be overloaded. At this time, the air conditioner will start the self-protection system, and the indicator light will keep flashing, accompanied by the phenomenon of turning on and off.
Solution: Since a transformer needs to be replaced, ask professionals for help.
IV. Damage to indoor temperature sensor
A malfunction in the indoor temperature sensor will cause the timer indicator light of the air conditioner to flash, and the frequency is once every 8 seconds.
Solution: Use an instrument to detect whether the indoor temperature sensor is damaged. If it is damaged, replace the temperature sensor.
There are too many reasons why the air conditioner does not start. The possible reason is the phenomenon that the compressor protection device trips. Compressor overload protection will trip, indicating that the system high pressure is too high or the overheating current is too large. Causes and troubleshooting of excessive high pressure and overheating:
A malfunction in the indoor temperature sensor will cause the timer indicator light of the air conditioner to flash, and the frequency is once every 8 seconds.
Solution: Use an instrument to detect whether the indoor temperature sensor is damaged. If it is damaged, replace the temperature sensor.
There are too many reasons why the air conditioner does not start. The possible reason is the phenomenon that the compressor protection device trips. Compressor overload protection will trip, indicating that the system high pressure is too high or the overheating current is too large. Causes and troubleshooting of excessive high pressure and overheating:
- Excessive refrigerant. Appropriate reduction of refrigerant charge.
- Poor heat dissipation. Check whether the condenser tube is dirty and clean the condenser.
- Blockage of pipeline system. Judge and troubleshoot with reference to the pressure gauge and reprocess the system.
- Dust and scale accumulate on the evaporator or filter. The air flow becomes smaller, and the system pressure and temperature are unbalanced. Clean the evaporator or filter.
- Lack of fluorine is also possible. When there is a lack of fluorine, the exhaust temperature of the compressor will be overheated, causing the overheat load protection switch to trip.
Problems in the circuit are: - Fault of control circuit board.
- Overload of temperature sensor and incorrect information.
- Loose power wiring and poor contact.
- Burnout of starting capacitor or compressor starting coil.
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