Air Conditioner Keeps Turning On and Off Constantly-AC Repair Pros Toronto
There are many reasons that cause the air conditioner to shut down automatically. Canada Energy Solution air conditioner repair contractor collected and summarized the five most common reasons, and cited a case to explain to you in detail the specific situation of the air conditioner automatically shut down:
Five common reasons for automatic shutdown of air conditioners
1. Reason for remote control setting: Check whether the timer switch option on the remote control of the air conditioner is on, if so, turn it off. Or to see if the remote control is in sleep mode, it will automatically shut down when the temperature reaches the adjusted temperature, just switch this mode to normal mode, and you can repair it by yourself without spending money.
2. Reasons for low voltage: Because air conditioners are equipped with automatic protection for low voltage, they will automatically stop when the voltage is unstable and exceeds the allowable range. If this happens frequently and the air conditioner automatically shuts down, the air conditioner cannot be used and needs to be repaired immediately.
3. Reasons for poor line contact: It is caused by poor contact between the plug of the air conditioner cable and the socket. You can try to unplug the air conditioner switch and plug it into another plug to see if it will automatically shut down. If it automatically shuts down, the air conditioner needs to be repaired by professionals.
4. Manual switch reason: check the emergency switch off the air conditioner (manual switch), (some of them are on the panel of the internal machine, and some need to be opened to see the internal machine panel), unplug the power supply, and pull back and forth with your hands. It may be caused by not resetting.
5. The refrigeration system lacks fluorine. The cooling or heating effect is poor, and the working current, operating pressure, and balance pressure are all less than their normal values. After a long period of operation, the overheating protection will stop. It can be solved by adding a standard dose of Freon to maintenance personnel.
Case display of automatic shutdown of air conditioner
Fault description: The switch-on mechanism is hot, and the outdoor machine is operating normally. After a few minutes, the indoor still cannot supply air, which causes the fan to automatically shut down. The whole machine is shut down and then the remote control is used to turn on the machine. The machine repeats the above state.
The cause of the failure: Due to the lack of oil in the plastic shell in the rubber bearing, when the indoor heating, the indoor coil sensor senses that the temperature has exceeded the cold wind prevention temperature, the fan should run in the breeze. At this time, the controllable motor voltage is low, and the torque is small. Because the frictional resistance between the rubber bearing and the fan shaft is large, the fan cannot be driven to rotate. At this time, the outdoor unit is still in the rotating room and the temperature of the evaporator rises sharply. When the maximum running current of the whole machine is reached, the whole machine will be repaired. In the protection state, the air conditioner does not receive external information. This is why the machine cannot be turned on with the remote control after it is turned off.
Toronto air conditioning maintenance engineer’s solution: Disassembled the panel and found that when heating, the indoor evaporator was already very hot. The fan should have started to rotate long ago, but the fan just did not rotate. Pull the fan slightly with your hand and it started to rotate and work. normal. Once the machine stops and restarts, the above phenomenon will appear again. Shutdown inspection found that the cross-flow fan blade was obviously blocked when it was pulled by hand during the static time. After disassembling the rubber bearing on the left, it was found that the bearing sleeve was dry, severely short of oil, and some plastic rings were heated and deformed. After replacing the rubber bearing The test machine is normal, and this requires professional repairs.
The above is the reason for the automatic shutdown of the air conditioner, and a failure case showing the automatic shutdown of the central air conditioner. If you can’t solve the automatic shutdown of the air conditioner, you need to find a sales service, and let a professional maintenance person check the internal circuit of the air conditioner to see if a certain operating parameter is abnormal.