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Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method

A detection method and indoor unit technology, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve problems such as complex testing, and achieve the effect of reducing workload and saving time and effort for installation

Active Publication Date: 2011-10-19
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Above-mentioned test is comparatively complicated, in view of this especially proposes the present invention

Method used

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  • Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method
  • Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method
  • Multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 5 As shown, the one-drag multi-air conditioner of the present invention is an outdoor unit connected to five indoor units, the first indoor unit is A indoor unit in this embodiment, and the other four indoor units are B and C respectively. , D, E indoor units, when the four dial switches SW-1 on the outdoor unit detection fault display board are turned ON at the same time, the unit is turned on, the outdoor unit sends a cooling signal to the indoor unit, and the indoor units are all in cooling operation . After 3 minutes of standby, the compressor starts and enters the cooling operation. At this time, each electronic expansion valve is not controlled by other conditions, but only by the outdoor unit. Outdoor unit system image 3 Example:

[0042]Step 1: Before the compressor starts, the main computer board drives the opening of the electronic expansion valve of indoor unit A to enter 300 pulses, and the opening of other indoor units to 5 pulses, and t...

Embodiment 2

[0056] The difference between this embodiment and the above embodiment is that the set t1, t2, t3, the frequency H, the preset value K, and the opening of the electronic expansion valve are different due to the different unit power, and the four dials of the dial switch SW-1 are different. After turning ON at the same time, after 2 minutes of standby, the compressor starts to enter the cooling operation.

[0057] Step 1: Before the compressor starts, the main computer board drives the opening of the electronic expansion valve of indoor unit A to enter 350 pulses, and the opening of other indoor units to 5 pulses, and the fans of all indoor units enter high speed;

[0058] Step 2: The compressor starts, the frequency rises to 65Hz, the speed of the fan of the outdoor unit is automatically adjusted according to the conditions, and the frequency remains unchanged.

[0059] Step 3: About 90 seconds after the compressor starts, enter the program judgment. First check indoor unit A...

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Abstract

The invention discloses a multi-split air-conditioning indoor and outdoor unit mistaken wiring detection method. After a plurality of indoor units are connected with an outdoor unit, four dial codes of a dial switch SW-1 on a failure display board of the outdoor unit are simultaneously on to start a machine set and start detecting procedures; the openness of an electronic expansion valve of each indoor unit are controlled by the outdoor unit so that the openness of the electronic expansion valve of one indoor unit is larger than the openness of the electronic expansion valves of the other indoor units; the average temperature of coil sensors of each indoor unit in a period of time is measured to detect whether to satisfy judging conditions or not to judge whether the connection between the indoor units and the outdoor unit is correct or not; and the connection between each indoor unit and the outdoor unit is detected in sequence according to the way. An air-conditioning system can automatically detect whether the connection of power wires and signal wires of each system is correct or not according to the set of the dial switch without needing manual inspection.

Description

technical field [0001] The invention relates to a method for detecting connection of one-to-many air conditioners, in particular to a method for detecting incorrect wiring of indoor and outdoor units of one-to-many air conditioners. Background technique [0002] For the one-drag multi-air conditioner, since there are many indoor units, the power lines and communication lines drawn from the main board of the outdoor units may be mistakenly connected to the indoor units other than the system (refer to figure 1 ), figure 1 What is shown is the wrong connection mode A and B indoor units are mis-matched, which will cause abnormal phenomena such as no cooling / heating when starting up, failure and so on. After online, because there are many lines and pipelines, it is extremely difficult to check, which causes great difficulties for after-sales installation and maintenance personnel. [0003] In the prior art, if the connection is wrong, the traditional inspection method is adopte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
Inventor 毛守博安超顾超尹叶俐
Owner HAIER GRP CORP
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