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FAQ for air conditioner failure

FAQ for air conditioner failure

A: not enough output for air-conditioning

Now, halfway through the summer, many domestic air conditioning service for about a month’s time, after such a long time of use, inevitably some minor faults occur. Due to insufficient knowledge of many consumers in air conditioning maintenance, so when glitches occur when air conditioning was overwhelmed, the higher fees will be spent to repair workers, they settled under 32.
In order to get your friends to be able to have a deeper understanding on air conditioning, to solve a few glitches, Xiao bian specially for you summarized some dispute resolution failed knowledge and methods, interested friends can go to find out.

Air conditioning is in use, sometimes you will find air conditioning, the air volume is small, the lack of air-conditioning, if there is change, you can do so in accordance with the following inspection of air conditioning:
1, the air intake is closed
2, coils and fins of the condenser is clean
3, the adequacy of the refrigerant in the system
4, the blower motor is working properly
Channel 5, blower for blockage
6, air inlet filter for blockage
7, evaporators for blockage

According to several phenomena where you can tell your air conditioning failed:
1, if the high pressure gauge normal pressure and low pressure table shows the high pressure, instructions evaporator pressure regulator, hot gas by-pass valve, into the spirit valve failure;
2, if the discharge air temperature is high, normal, or high pressure gauge pressure indicator, low pressure has increased slightly, the expansion valve filter screen blockage;
3, if the high pressure gauge indicating higher than normal pressure and low pressure gauge lower than normal voltage supplies, and received dryers and piping icing, then receives the dryer filter blocked;
4, if the high pressure gauge indicating higher than normal pressure, may have excessive moisture in the system. If bubbles are found in the observation window, mixed with the air in the system.

Two: air-conditioning on and off
Air conditioning is in use, air conditioning can also occur intermittently, sometimes not, if such happens friends can check:
1, open magnetic circuits, fan switch, fan motor is faulty;
2, compressor coil and solenoid valve are open circuit or poor grounding and connection is loose;
3, whether the compressor connections for loose;
4, instrumentation and control vacuum line;
5, evaporators for blockage.

We can judge whether the failed:
1, if the low pressure gauge is too high or too low, adjust the thermostat does not work, the thermostat failure;
2, if the low pressure gauge and pressure gauge pressure is too low, then the system has moisture in, plug the hot gas bypass valve or vacuum integrity flow valve.

Phenomena III: without air-conditioning

There is another situation that may arise, is the air conditioning stopped working not cooling, this often will make you helpless, failure can be detected according to the following ways:
1, Compressor drive belt is loose or broken;
2, fuse;
3, fuse cord;
4, connecting wires are disconnected;
5, compressor coupling coil and solenoid valve;
6, thermostat electrical contact is normal, the temperature sensors are faulty;
7, fan is working correctly;
8, ignition switches and relays;
9, compressor is frozen;
10, whether refrigerant piping leaks;
11, compressor seal for leaks.

We can according to the circumstances where failure: 1, if the heater has hot water, released evaporator heat heater control valve is not working.
2, while the engine is either speed, high and low pressure gauge reading is only a slight change, the tongue-type valve of compressor failure.

Four: the machine has a noise
Finally, the editor teaches you how to detect when a large air conditioner noise:
1 blade is loose, exhaust Windows;
2, Compressor drive belt is loose, frayed;
3, compressor mounting bolts are loose;
4, listen to compressor noise;
5, compressor wiring and solenoid valves.

Under the circumstances of failure:
1, coils and electrically controlled solenoid valves of the compressor failure;
2, compressor liquid level too low;
3, fan-fan fault;
4, if too much moisture in the system, the expansion valve noise;
5, when high pressure servo-valve is closed, compressor produces loud thumping noise

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