Water is leaking from indoor unit of air conditioner

The air conditioner is leaking

While operating the cooling system the owner faces the problem of water dripping from the inside of the air conditioner. Equipment malfunctions due to improper use or because of broken or clogged parts. Let’s understand the following questions in more detail:

  • The reasons why water leaks from the indoor air conditioner unit;
  • What is the “root” of the breakage;
  • Is it possible to remove the cause of incorrect operation of air conditioner and when is it necessary to call a master?

How an air conditioner drainage system works

During air conditioner working in a cooling mode, evaporator of indoor unit of split-system is cold, about 0°C. The air passing through it quickly cools to a temperature of 2. 8°C, the water steam condenses and flows into the sump. From the tray water is drained by gravity through a drainage hose to the street, sewer, drainage system, etc.д. For this purpose a drainage hose should be laid with a slope towards a drainage, if for some reasons it is impossible, then special drainage pumps are used for condensate removal.

Drain pump air conditioner advantages and disadvantages

Drainage pump of air conditioner consists of two main parts. pump body and float chamber. Connection to 220V network is realized on the terminals of split-system block itself, no need to have a separate power cord.

water, leaking, indoor, unit, conditioner

Float chamber is placed in constructive cavity inside the air conditioner unit and is connected to drainage hose. In wall-mounted types of conditioners there is not enough space for placing a body of pump inside the block, it is taken outside or a special cavity in the wall is made for it as on the photo.

If there is a possibility to lay the drainage hose with a slope, no matter how much effort it requires, it is better to work. It is reasonable to use pumps only when gravity drainage is not possible. It is connected with some disadvantages.

  • Firstly the drain pump of the conditioner is additional expenses on its purchase and installation, the average cost with installation of qualitative pump of such marks, as “Sauermann” (France) or “Aspen” (England) will cost about 6 000
  • Secondly, the pump can fail, which will entail the cost of its purchase and replacement.
  • Thirdly, the operation of the pump is accompanied by additional noise (buzzing), although not long, which irritates and infuriates especially sensitive users, especially at night.

The advantages include the condition that allows you to choose any location to place the room air conditioner unit and remove condensate from it by force, and, when pumping condensate into the drain does not require a special siphon or odor trap to prevent unpleasant odors of human life.

How an air conditioner drain pump works

All drainage pumps for air conditioners have the property of dry suction, which means that the pump runs dry and does not need to be filled with water. However, continuous dry running of the pump will cause its damage, because the pump is being cooled by the pumped liquid during operation.

The working principle is as follows. Condensate from the split system unit tray drains through the drainage hose to the float chamber. As the liquid fills up the float floats up and shorts the contacts, thus starting the pump motor. Due to the small size of the float chamber, the pump starts for only a few seconds, the float sinks, contacts open, the pump shuts off.

If there is water leakage from air conditioner, it means that there are some problems with external or internal module. There are several reasons for the problem most often.

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Clogged filters

Filter nets situated in an air conditioner internal module absorb all the dust and quickly become clogged. If too much dirt builds up on them, the unit’s cold transfer rate becomes insufficient and the heat exchanger freezes. Droplets form on the body of the device and water flows directly to the floor.

It is recommended to clean filters of your air conditioner at least once a month

Uneven location of the unit

Condensate in the air conditioner shall accumulate in a special tray located in the indoor unit. If the module hangs on the wall with a slope, the water tank is at an angle. As the result, the liquid overflows over the edge of the tray or just runs past it.

Air conditioner is working too long

Condensation builds up on the freon conducting tubes and other components if the unit operates in cooling mode for a long time. As a result, water leaks from the outdoor unit along the façade.

Float stuck in the chamber

For pumping out the condensate in an air conditioner the pump is responsible, which can fail due to sticking of the float in a special chamber. The element sticks to the plunger or the bottom, so the pump does not get the on-time command and the liquid leaks from the indoor unit.

5 Reasons of water leakage from Air conditioner || How to resolve water dripping from Indoor unit.

Attention! The float gets stuck especially often when a split-system is rarely used, because dirty water in the chamber has time to dry up and turns into a sticky substance.

Drain hose is clogged

For drainage of condensate from the air conditioner is responsible corrugated hose, the inner diameter of which is usually less than 16 mm. In course of time it becomes clogged with mud on the pipe walls, the water flows less freely and puddles appear on the floor under the split system.

Capillary tube breakage

The capillary tube with diameter of 8-10 mm takes part in the work of air conditioner. It is quite soft and can break and crush in bends. As a result the split-system is working, but its cooling ability decreases and there is water leakage from outside unit.

Where does the water in the air conditioner come from and why does it start dripping

The main function of an air conditioner is to cool the air. A number of mechanisms, located in the indoor and outdoor unit, cope with this task. During operation, the evaporator (cooling element) produces condensate which must be drained into a bucket and then piped to the outside.

Because of various problems the condensate formed on the evaporator can drip past the tank, leaving streaks on the walls next to the unit, to get into the fan or flow out of the tank without going through the drain line. Before determining the course of repair work, it is necessary to find out the exact cause of the malfunction.

How much condensate an air conditioner produces

The amount of condensate produced is determined by the appliance capacity parameter using the following formula: per 1kW of cooling capacity. 0.5-0.8 l/h condensate. That is, if there is a split-system at 3 kW in the house, the average volume of condensate will be 1.5-2.4 l/h.

When the air conditioner works for cooling, water is formed in the indoor unit. condensate. Condensation. is the moisture in the air that condenses on the surface of the heat exchanger of the air conditioner whose temperature is below the dew point.

The dew point is the temperature of the air at which the steam (moisture) it contains reaches saturation and begins to condense into dew.

If conditioner works properly, and the main thing is that it is installed qualitatively, the condensate is safely removed outside the room. This happens by gravity (the drainage is laid with a slope) or by force (when using pumps, pumps, etc.п.)

Specialists say

Here are some more remarks and pieces of advice from professionals who are dealing with installation, adjusting and repairing of cooling devices. Generally, the most common reason that the air conditioner is leaking, they call a clogged drainage tank. If you neglect to clean it service, it will eventually clog. Dirt, wasps, spiders and other insects get into the tube. The question often arises. what are the insects doing inside the tube? They are attracted by water, as well as by all living beings in summer. Some people even settle there. Resourceful owners of air conditioners sometimes put a mosquito net on the end of the tube, but with time it also gets clogged.

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As drainage tube hole is about 1 cm in diameter and it is clogged, when split-system is working, the water is dripping through the internal block in the apartment, not through the pipe on the street. It is better to entrust the problem of cleaning to professionals. After disconnection of air conditioner and its flushing the problem will be completely eliminated, the drainage system will be cleaned.

Often an independent human factor is to blame for the fact that water drips from the housing. So, during repairing process it is necessary to move it a little bit up, down or to the side (especially when repairing touches the ceilings in the room). In this case, if it is done without assistance of specialists, the angle of the drainage can change and the water does not flow outdoors as it should, but into the room dripping. Here you can not do without workers of service company, because. к. You have to drill a new hole and re-lay the communication. In addition, during the now popular high-rise insulation works, industrial climbers, as experience shows, can also put putty drainage (if the neighbors are dripping from above), and bend up the end of the drainage pipe. Here, of course, to fix the leak, you need to remake the intervention of careless workers.

Why does the conditioner freeze: causes, remedies

Conditioner is a comfortable climatic appliance, that creates a comfortable temperature in the house during the warm period of the year. However during exploitation of an air conditioner many owners very often have to face different technical problems, one of which is a “symptom” of freezing of an outside or inside unit.

In this article we will consider on what causes the formation of ice on the indoor or outdoor unit of air conditioner and how to solve the problem.

The reasons why the air conditioner is leaking water

In order to avoid breakage in any split-system there is a drainage duct. All condensed liquid is led out through special tubes to the outside and removed.

When the indoor unit of an air conditioner leaks into the room, it is a sign of improper operation of the device. For troubleshooting you need to know what causes the leak. This will help to quickly resolve the problem without aggravating the situation.

Improper location of the drain hose

Condensed liquid from the indoor unit is evacuated outside by gravity. For this purpose drain pipes should be located with a small slope. If it is not present or the slope is too low, the condensate will accumulate in the indoor unit. Water leaks from the air conditioner into the room when the tank is full.

Improper location of the drain hose makes itself felt after just a few hours of continuous operation of the unit after installation. In this case there is only one solution to the problem: you need to install the pipes with the proper gradient.

How much does it cost to repair air conditioner in Almaty??

Most of our clients pay from 5 000 to 8 000 tenge for repairing problems related to the air conditioner leakage. Get a free estimate for repairing your air conditioner

The drainage channel is clogged

Why the air conditioner is leaking: there can be different reasons. But the most widespread is in the lack of service. Falling in and accumulation of debris inside the drainage can cause difficulties with the drainage of condensate. Liquid gets in the internal block and leakage occurs. This problem is solved by cleaning of pipes and mud removal from the system. In order to avoid repeated clogging, it is recommended to perform timely maintenance of split system with the help of specialists.

One more reason why conditioner is leaking. it is a clogging of condensate drain pipe from outside. Insects, leaves and other debris can penetrate into the inside of a branch pipe. If it is so it is necessary to remove the clogging by means of twist, bar, vacuum cleaner or other suitable means at hand.

Lack of freon in the system

In case of Freon shortage in the system, copper tubes begin to freeze heavily, covered with a layer of snow or even ice. In this case air conditioner leaks after air conditioner switching off. when air conditioner is working the tubes freeze, after switching off the tubes warm up to the room temperature and ice starts to drop from the inside unit to the wall or floor. Freon leakage detection and removal, topping up or complete refilling of the system.

Only specialists should be employed to solve this problem. If it is necessary they will replace the tubes with the new ones and fill them with the missing freon. The independent intervention and carrying out of repair can aggravate a situation and can cause a harm to health.

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No thermal insulation on the air conditioner tubes.

All copper tubes of split-system from external block, to the internal one, should be covered with thermal isolation. Lack of protection reduces cooling capacity and causes “sweating” of the tubes in the room, namely in the lower part of the indoor unit. Moisture condenses on the cold tubes surface and air conditioner starts to drop on the floor. It is necessary to call a service company for winding the route with thermal isolation. It is necessary to check freon pressure and compressor efficiency.

The indoor unit is not level. Not on “level”.

It is possible to take out the drainage hose from the conditioner from one of two sides of the pallet, from the left or from the right face of the internal block. If the unit housing is tilted to the opposite side. from the drain outlet side, the liquid starts to accumulate at the lower point of the tilted tray and overflows over its edge. water starts to drip from the air conditioner. Fixing of problem. lay the construction level on the upper part of indoor unit and set the level.

Upper sump drainage channel is clogged. Rare Problem.

There are two drain pans in the air conditioning unit, the big one at the bottom and a small one at the top. The upper sump is connected to the lower drainage channel, which can become clogged and the water begins to overflow its edges, getting on the fan motor and the split system is leaking into the room. The contamination of the top sump indicates an extremely dirty system. Problem solution. full high-pressure washing of air conditioner with necessary chemistry.

Pump failure

For an effective condensate gathering in the drainage reservoir, split-systems have the pump. If it fails, the air conditioner leaks into the room because the liquid does not get into the tank. It is difficult to notice the malfunction without carrying out the diagnostics. Therefore, only service center specialists should solve the cause of the leak in this case. The fault can be eliminated by repairing or replacing the pump with a new one.

water, leaking, indoor, unit, conditioner

Leaks in the fluid circuit of the air conditioner

In chiller-fancoils there is a closed circuit for circulation of working liquid in the system. Vibrations or just bad fixing can lead to depressurization. The consequence of it is running conditioner, which can cause equipment failure. To find the problem check the fixation of pipes. If it is necessary to caulk up problem places and tighten nuts of fixture. You can do it yourself. The only thing to take into account is that exceeding the tightening torque could result in thread breakage.

Service of air conditioners

Split-systems operation is based on a sudden air cooling. Such change of temperature leads to condensate formation on the air conditioner cooling element-evaporator, which is located in the air conditioner’s internal block. Normally, the water flows from the evaporator into a special tray, and then along the drainage pipe is removed to the street or into the sewer. Most often the drainage tube is taken outside, which is where the condensate drips.

An air conditioner leak is usually caused by some sort of malfunction, and technically occurs in one of the following ways:

  • Water is not escaping from the tub through the drainage path. For example, due to a clogged drain. As the condensate tank overflows, water leaks from the split system into the room.
  • Condensate dripping past the tub. For example, if it is displaced.
  • Water gets on the fan and the air conditioner “spits” water. For example, it happens when the evaporator freezes because of too low condensation temperature.

Naturally, a split system leaking into a room is not a normal variant of the technique. In some cases such conditioner’s behavior is concerned with the incorrect installation, sometimes with the violation of exploitation, but more often. with the breakages. Below we will look at the main reasons why water goes from the air conditioner to the room.

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