Tips for quick maintenance of refrigeration system

Tips for quick maintenance of refrigeration system

Today, let’s take a look at a few tips for overhauling refrigeration and air conditioning systems, which are very useful to everyone!

　　 1. The press does not start, and there is no problem with the temperature setting, but there is no response after power on

　　 The compressor does not turn, the fan turns, you must first look at the capacitor

　　 The capacitor bulge needs to be replaced. Remove the capacitor and check the power supply

　　If there is power supply, check the press machine, overload protection is the key

　　 There is no power supply to the house, first check the connection line

　　Secondly, look at the temperature control. The temperature control should be replaced

　　Relay is an important point, the front driver must be judged

　　 If the above is normal, the following things are easy to handle

　　Mainboard repair or replacement, ask the user before making a decision

　　2, heat protection after the press starts

　　 There is cold air when the air conditioner is turned on, the temperature then increases

　　 After a while, the cold wind turns to hot, and the outside press stops.

　　 At this time, look at the external fan first, whether the speed is low or not

　　 If it is low, change the capacitor instead of the capacitor for the fan

　　 Next, look at the condenser, if it is too dirty, it needs to be cleaned

　　 Too much fluorine is added and the current is large, the press will also stop work

　　The capacitor of the press machine also depends on it. It is best to change according to the original machine

　　3, the press will be protected in a few seconds after power on

　　 Disconnect the power supply line of the compressor and judge by the external line

　　If check the power supply normally, replace the capacitor first

　　 Change the capacitor and experiment again, if you make money normally

　　 On the contrary, cut off the high voltage and turn on the high voltage and try again

　　If the compressor runs normally, the pipe is blocked is the key

　　If the press has not been transferred yet, replace the press

　　 Note: After the press is protected, the overload protector will not reset until a while, so the press will not respond when the power is turned on immediately.

　　4, the air conditioner turns on when it is turned on

　　 Don’t mess with this beforehand, disconnect the external connection line

　　 It's good to judge inside or outside, and work well when judged

　　Easy to deal with external machine failures, four-way press and fan

　　 One by one, break the wires one by one, change which one is broken

　　 Finally, check the connection cable. The mouse gnawed and leaked

　　Internal machine failure is difficult to handle, the fan wind swing is judged first

　　 Take out the motherboard and take a closer look to see if there is UMC

　　 It’s really hard to repair the board and change it, making money is the key

　　 5. The air conditioner is not cooled well or is not cooling

　　 This problem is the most common air conditioner lack of fluoride is the key

　　 First touch the air pipe when power on, judge by temperature

　　 If it is cold, check the internal machine, the fan speed may be low

　　 inner tube scales and dustproof, clean or replace

　　 If the inner tube is not cold, the thick tube may be flattened

　　 The return air temperature is not cold, then touch the air to judge

　　 The intake air is cold and frosty, add fluoride and try again

　　 If the frosting slowly dissipates, it will be fluorine-deficient and good decision

　　 It is not difficult to see the aging of the press. Insufficient exhaust is the key point

　　 Four-way gas cross-talk is also common. Judging by collecting fluorine

　　High-pressure scales must be watched, they will slow down if they are dirty

　　 6. The air conditioner does not turn on

　　 The air conditioner is energized to test it according to the beep

　　 There is no beep to check the power supply. Next, look at the motherboard

　　 If there is a beep, then judge

　　 Air conditioner startup is easy to handle, judge the remote control damage first

　　 Exclude remote control check reception, infrared reception first replace

　　 Check again if there is power supply, follow the signal line again

　　 Then power on and experiment again to see if the air conditioner works

　　If the air conditioner doesn’t turn on

　　 Note: Most air conditioners will make a beep when they are powered on, but there are some, you can judge by yourself.