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Driving the rapid development of the air-energy industry, it is inevitable to encounter various after-sales problems during the operation of the unit. As ordinary people, it is often difficult to distinguish whether it is a problem with the host and system, or a problem with water and electricity. In response to this situation, we have some common questions to answer for everyone, hoping to help you.
1. The 220V power supply voltage of the city power is unstable. Most of the time the voltage is normal, and occasionally the voltage is too low, resulting in excessive working current of the compressor and insufficient cooling of the compressor coil, which eventually causes the compressor to trigger the internal thermal protection device. The fault phenomenon is that the fan is running, the water pump is running, and the compressor is not running. After the person arrives at the scene, the voltage tends to be normal again, which makes it extremely difficult to find the cause of the fault. The main responsibility of this article is the power supply department.
2. The air switch in the special distribution box provided by the power supply department is damaged, resulting in the whole machine not being powered on and not working. The main responsibility of this article is the power supply department.
3. The air switch in the special distribution box provided by the power supply department was installed incorrectly. An air switch with a small overload current was installed, causing the main unit to trip as soon as it was started. The main responsibility for this article is the power supply department.
4. Some retail households have a continuous low voltage, which can reach 160V at the lowest, causing the unit to be unable to be used at all. The main reason for this article is that the wires used by the power supply department or the user themselves do not meet the requirements.
5. The heat pump is connected to the radiator, and the filter is blocked, causing the unit to have a high-voltage fault after working for a period of time. It is normal after the filter is cleared. The main responsibility for this article is that the installer did not flush the pipes before installation or the user insisted on using an abnormally old radiator.
6. The user's indoor heating pipe structure is extremely complex in series and parallel, which is not a conventional installation method, resulting in poor heating effect in some rooms. The main reason for this article is that the user's original heating pipe structure is unreasonable.
7. The user's indoor radiator is not equipped with a flow regulating valve, resulting in good effect for the radiator close to the machine and poor effect for the radiator far from the machine. The main responsibility for this article is that the user's original heating pipe design is unreasonable or the end pump head matched by the manufacturer is small.
8. The user's indoor floor heating does not meet the requirements, and there is no insulation board, reflective film, etc. under the floor heating, resulting in poor indoor effect.
9. The user's indoor radiator is not vented or the venting is not thorough, resulting in individual radiators not being hot or water sounds inside the radiator.
10. The user's indoor heating pipe is too long, and the holes in the wall are sealed with cement when passing through the wall. The temperature difference between the start and stop of the unit causes the pipe to expand and contract and rub against the wall holes to produce abnormal noises. The user said there was something fishy.
11. The user insisted on installing the unit indoors, resulting in severe frost and low-pressure failure of the unit.
12. The user privately built a shed to enclose the outdoor unit or covered the unit with a quilt, resulting in severe frost and low-pressure failure of the unit, and even caused the fan to overload and burn.
13. The user privately installed an iron cage net for the outdoor unit, making it impossible to repair the unit.
14. The user found that a large amount of steam was generated during the defrosting of the unit at night, and was afraid that the unit would explode, so he turned off the power and reported it the next day, causing the unit or pipeline to freeze. Some even called 119, and the whole family poured water to put out the fire.
15. After the unit was shut down, there was a sound of high and low pressure balance of the refrigerant at the expansion valve. After hearing it, the user was afraid that the unit would explode, so he turned off the power and reported it the next day, causing the unit or pipeline to freeze.
16. The user found that there was water leakage under the unit during defrosting, reported that the pipeline collapsed, and asked to go to check the pipeline leakage.
17. When the user was not using the unit, he did not turn off the power to the unit and did not drain the water, causing the unit to freeze a few days later. (Using antifreeze can solve this problem, but due to the low bidding price, many systems do not add antifreeze)
18. There are hidden leaks in the user's indoor pipe network, which causes the unit to frequently need to add water. The unit may report a water flow switch failure, or the user reports a repair request to check the hidden leaks in the room.
19. The user mistakenly adjusts the unit mode to cooling mode, but will not adjust it back, and reports that the machine is broken.
20. The user mistakenly sets the unit to timing mode, but will not cancel the timing, and reports that the machine is broken.
21. The user privately changes the setting parameters and sets the minimum opening of the expansion valve to 60, causing the compressor liquid to be scrapped.
22. The user privately changes the setting parameters, resulting in a series of problems such as the unit not defrosting, the water temperature display and the actual temperature deviation are too large, the machine frequently starts or does not start, etc.
Problems caused by unscientific installation
23. The installer installed the water supply bucket on the water outlet of the water pump, causing the user to be unable to replenish water.
24. The installer installed the pipeline incorrectly, resulting in a short circuit or open circuit in the unit's water circuit, and the unit cannot work properly.
25. The installer installed the communication line together with the strong wire, resulting in interference in the unit's communication.
26. The installer installed the unit in a difficult-to-repair location, resulting in the machine being unable to be repaired at all.
27. The installer installed the water pump in reverse, resulting in the unit not being able to work properly.
28. The installer used inferior PPR all-plastic ball valves, resulting in the valve being damaged after several uses. The valve appeared to be open on the outside, but it was closed inside, resulting in the machine reporting a water flow switch failure or high-pressure failure.
29. The agent used inferior water pumps, resulting in water pump damage, and the user reported that the machine was broken.
30. The user privately changed the original installation location of the machine, and after the change, asked the manufacturer to send someone to wire and debug.
31. The user complained that the defrost water froze and caused a person to fall, and asked for the defrost water to be processed. (Part of the reason is the choice of installation location, which is indeed a problem. Another reason is that the installation sites in rural areas are indeed limited)
32. The water pump head varies due to different user site conditions, making it difficult to uniformly match the circulating pump.
33. Refrigerant leakage due to unqualified welding or pipe bending processes.
34. The compressor starting capacitor is damaged.
35. The four-way valve coil screw falls off, resulting in the inability to defrost.
36. The solenoid valve coil screw falls off, resulting in abnormal operation.
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