With the increase of users, the maintenance of central air conditioning in Colmo has increased; The hotline is easy to get busy; Please dial more times; Please forgive me! All-weather, all-day service!
Dear users, hello! Thank you very much for choosing COLMO series products! Thank you for accepting us. Please supervise the whole service process. I believe that with your support, we can constantly improve the service process, improve the service quality, and provide you and other consumers with all-round services.
Quality is our life. COLMO after-sales maintenance service center will continue to grasp the lifeline of scientific and technological development, continue to uphold the concept of high-quality and timely professional service, take honesty as the foundation, and provide our customers with better service with innovative maintenance technology and higher and higher service standards!
More and more central air conditioners are entering people's homes. Not only urban families have central air conditioning, but even rural areas are basically covered. The use of central air conditioning is really more and more extensive. But after using it for a long time, there will always be some minor problems more or less. I wonder how everyone solves it. In fact, everyone should know how to maintain central air conditioning. Good maintenance methods will prolong the life of central air conditioning.
It is necessary to clean the dust on the central air conditioner regularly, because dust can easily block the filter screen, so that the filter screen can not better filter out some harmful substances. Let's take a look at the common faults of central air conditioning.
Introduction of Common Faults of Central Air Conditioning System in Colmo
1, central air conditioning noise
Under normal circumstances, the outdoor machine is too noisy: this is very common. One of the most important reasons is that the outdoor unit of the household central air conditioner is not fixed firmly when it is installed, which leads to vibration when the household central air conditioner is started, and then the blades of the outdoor unit have problems.
2. The central air conditioner leaks water
In fact, this problem is the most common, but there are four central air conditioners that need to be repaired and not installed. It is also because the drainage pipes are blocked for a long time, which leads to water leakage.
3, central air conditioning odor
Generally speaking, the wind from the outlet of household central air conditioning has a strong smell. This situation is that your home central air conditioner can not only refrigerate, but also cure diseases.
Our company has strong technical force, complete institutions and a technical maintenance and installation team with many years of practical experience. All employees have at least 6 years working experience in this industry. There are also professional and technical personnel who have been engaged in sales, installation and other pre-sales and after-sales services for a long time. After professional course training, maintenance personnel are familiar with the performance, maintenance and management of various equipment, have excellent professional skills and service awareness, ensure the quality of each service, and win the affirmation and trust of our customers.
The door-to-door master has more than ten years of professional experience, excellent technology and enthusiastic service. Before starting maintenance, test, quote and get the customer's consent. No maintenance without security, no root, no maintenance value; Don't waste customers a penny. The maintenance is completed only after the user has accepted it, and a charging document and a warranty card are issued. Pay a return visit after maintenance and ask about the usage of household appliances and the details of charges.
The service process is as follows:
Call the hotline1;
2 Registration appointment
3 come to the door on time
4 check the fault
5 determine the cost
6 Troubleshooting
7 fill in the voucher
8 provide warranty.
Service items:
Maintenance, maintenance, installation, fluorination, disassembly, assembly, addition, relocation, drilling, liquid addition, fluorination, refrigerant, snow seed, overhaul, handling, replacement, cleaning and maintenance of the central air conditioner of COLMO project, etc.
Maintenance scope:
Maintenance faults of COLMO central central air conditioner: no heating, no refrigeration, leakage repair, wiring repair, poor refrigeration, no shutdown, no startup, no lighting, no display of electricity, tripping, replacement of motherboard, no startup, automatic startup, water leakage and lack of snow seeds.
Dear users, no matter what you need, you can call our 24-hour unified service phone.
1, our representative will provide you with professional answers!
2. We will arrange the service engineer of the nearest outlet to come to your door on time according to your appointed time!
3. The engineer will explain the working principle and operation of the product in detail while providing quality service!
4. After the service, the engineer will explain the common sense of product use to you and guide you to use it!
5. Your service information will be fed back to the center synchronously, and we will arrange customer service staff to pay a regular return visit!
Tips: One of the following situations is not covered by the warranty, and the special service outlets can carry out maintenance at a charge according to the relevant provisions of this manual:
Damage to consumers due to improper use, maintenance and storage;
Damage caused by installation and maintenance of non-special service outlets (including installation or disassembly and maintenance by consumers themselves);
No warranty certificate or valid purchase certificate;
The valid certificate is inconsistent or altered with the warranty certificate;
Damage caused by irresistible natural disasters or harsh use environment;
Disposable articles, products beyond the shelf life.
In order to provide professional and high-quality maintenance services, we solemnly promise: fast and convenient: telephone appointment for maintenance, multiple outlets in the city, engineers nearby. What if there is something wrong with the central air conditioner? In fact, any electrical appliance will always have some faults after being used for a long time. Because the air outlet of the central air conditioner is at the top of the wall, it may not be cleaned and maintained at ordinary times, and it is easy to cause some problems when dust enters the body over time. Today, the coldest bacteria will introduce how to analyze the faults of central air conditioning. The methods needed are: seeing, listening, touching, measuring and analyzing.
Colmo central air conditioning failure-look.
Carefully observe the working conditions of all parts of the central air conditioner, focusing on whether the refrigeration system, electrical system and air system are working normally.
draw
1. Refrigeration system: observe whether there are cracks, damages, frosting and dew condensation in each pipeline of the refrigeration system; Whether there is collision or friction between the refrigeration pipeline, the pipeline and the shell, especially whether there is leakage at the welding and joint of the refrigerant pipeline, and whether there is oil pollution (there is a certain amount of refrigeration oil in the refrigeration system), you can also wipe the welding and joint of the pipeline with clean soft cloth and soft paper to observe whether there is oil pollution to judge whether there is leakage.
2. Electrical system: observe whether the fuse of the electrical system is blown, whether the insulation of the electrical lead is intact, whether the circuit board is damaged and whether the connector is loose. In particular, whether the electrical connection is in good contact, the wiring screws and connectors are easy to loosen, leading to poor contact.
3. Ventilation system: observe whether there is too much dust on the air filter, heat exchanger coil and radiator; Whether the air inlet and air outlet are unblocked; Whether the fan and blades are operating normally; Whether the wind is normal, etc.
Colmo central air conditioning failure-listen.
Listen carefully to whether the running sound of the compressor of the central air conditioner is normal, whether there is abnormal sound, whether the fan is running with noise, whether the noise is too large, etc. In the operation of central air conditioning, the vibration is slight and the noise is small, generally below 50DB. If the vibration and noise are excessive, the possible reasons are:
1, improperly installed. The size of the bracket is inconsistent with that of the unit, and it is not firmly fixed or has no damping rubber or foam plastic pad. The vibration and noise of central air conditioning will be aggravated during operation. Especially when starting and stopping, it is most obvious.
2. Abnormal vibration of compressor. Poor installation of base, uneven feet, poor installation of shock-proof rubber or spring or poor shock-proof effect, etc. If there is a fault inside the compressor, such as valve plate rupture, liquid hammer, etc. , but also make abnormal sounds.
3. The fans are coming. Improper installation or deformation of fan blades will produce collision sound. The fan may collide with the wall shell and chassis, the axis of the fan will move, and the blades will make a collision sound when they are out of balance; If there is a foreign body in the fan, the blades will also collide with it.
Central air conditioning fault-touch
Touching the relevant parts of the central air conditioner by hand and feeling its cold, heat and vibration are helpful to judge the nature and location of the fault. In general, the temperature of the condenser gradually decreases from top to bottom, and the temperature in the lower part is slightly higher than the ambient temperature. If the whole condenser is not hot or the upper part is slightly warm, or although it is hot, the temperatures of two adjacent tubes are obviously different, it is abnormal. Evaporator Under normal circumstances, if you immerse your fingers in the water on the surface of the evaporator, you will feel cold and sticky. In general, the capillary at the dryer and outlet should feel warm (slightly higher than the ambient temperature, and basically the same as the pipeline temperature at the end of the condenser). If the temperature is lower than the ambient temperature, the temperature difference between the condensation on the surface and the capillary section is abnormal. Under normal circumstances, the temperature of the suction pipe 200MM away from the compressor should be close to the ambient temperature.
Central air conditioning failure-test
In order to accurately judge the nature and location of faults, it is often necessary to check and measure the performance parameters and status of central air conditioning with instruments. If a leak detector is used to check whether there is refrigerant leakage; Use multimeter to measure whether the power supply voltage, grounding current of each terminal and working current meet the requirements, and computer-controlled central air conditioner should also measure whether the potential of each control point is normal.
Central air conditioning failure-analysis
Most of the results obtained by the above inspection methods can only reflect a local state. All parts of central air conditioning are interrelated and influence each other. A fault phenomenon may have many reasons, and a reason may also produce many faults. Therefore, the local factors should be comprehensively compared and analyzed, so as to comprehensively and accurately determine the nature and location of the fault.