AUX E&H Series Service Manual
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AUX E&H Series Service Manual

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Summary of Contents for AUX E&H Series

  • Page 2 Part II, including Chapter 2 and Chapter 3, introduces products available offered by AUX as well as functions and features of the products, and represents overall exploded views of AUX air conditioners; Part III, i.e. Chapter 4, provides basic disassembly procedure of AUX air conditioning;...

  • Page 3: Table Of Contents

    Section two- H series products……………………………………………………………….…..92 Section three- M series air conditioner exploded views………………………….……………...112 Chapter 4 The disassembly and the relating attention issues to the part of AUX product……..…..118 Section one- the disassembly and the relating attention issues to the series products of 9000BTU~12000BTU………………………………… ….……118 Section two- the disassembly and the relating attention issues to the series product of 18000BTU~24000BTU…………………………………….…..122...
  • Page 4 AUX air conditioner service manual Chapter 1 the operation theory of the Room Air-Conditioner Section one the basic knowledge of pyrology and ventilation 1. Basic Definition Temperature ¢ Å Temperature is a physical value for the definition of the percentage of the cold and heat to an object.
  • Page 5 AUX air conditioner service manual The pressure is distinguished by gauge pressure and absolute pressure applied in the practice. The gauge pressure is validated according to the numerical value shown on the pressure gauge. This value, based on an atmospheric pressure (0), is the difference of the actual pressure of the tested gas and the ambient atmospheric pressure.
  • Page 6 AUX air conditioner service manual applied in the separating process by the gas & liquid separator. ¢ È Heat Energy The heat energy of the substance, the internal energy, is the sum of the kinetic energy and potential energy. The quantity of heat is the physics parameter for measuring the heat absorbed or released by the physical object, and is one of the representation forms of energy.
  • Page 7 AUX air conditioner service manual your hand will feel heated. Different materials have different heat conductivity. In this case, the heat conductivity coefficient was introduced as the unit of the value for measuring purpose. Such coefficient represents the amount of heat that passes by conduction through a one meter thickness of homogeneous material, per one hour and per one square meter Measured as 1¡...
  • Page 8 AUX air conditioner service manual impacted by force, for example the convection of the refrigerant inside the pipes caused by the impact from the compressor of the refrigerator and air-conditioner, and the forced convection to the condenser and evaporator impacted by the fan. The heat transfer coefficient is directly proportional to the flow speed of the forced convection.
  • Page 9 AUX air conditioner service manual water in the air within the temperature zone under 100¡ æ , the absolute humidity can be represented by the pressure value created by the water vapor in the air. The pressure unit is: Pa.

  • Page 10: Section Two The Basic Knowledge Of Refrigeration

    AUX air conditioner service manual temperature value shall be determined by the industry & mineral enterprises, scientific & research institutes, medical and sanitary units according to their own specific purposes. The process of air temperature conditioning is substantially the process of adding or reducing sensible heat.
  • Page 11 AUX air conditioner service manual ¢ Ú Freon species refrigerant They are the ramifications of methane and ethane with the changing character in consequence of the quantities variety of the atoms of fluorine, hydrogen and chlorine. The best option for choosing a chemical compound at the vaporizing temperature of -130¡...
  • Page 12 AUX air conditioner service manual ¢ Å The requirement for the thermodynamic character The basic requirements the refrigerant shall meet are: ¢ Ù Under the standard atmosphere pressure, the evaporation temperature must be low and generally shall not higher than -10¡ æ . The pressure value under the normal evaporation temperature shall be higher or closed to the atmosphere pressure value in case of the air’s in leakage to the system.
  • Page 13 AUX air conditioner service manual specific type and temperature of the lubricating oil. The capacity per unit of R22 is almost same as the one of R717 while it will be higher than R22 under a low temperature.R22 is usually applied in the middle temperature refrigerating systems with the object lowest refrigerating temperature of up than -60¡...
  • Page 14 AUX air conditioner service manual Slippage temp.¡ æ £ © <0.17 4¡ « 6 Capacity of refrigeration £ ¨ %£ © COP£ ¨ %£ © 92.5 Lubricating oil Mineral oil Lubricating oil Mutual solubilization Good Fair Fair 2. The theory of refrigeration There are many methods in artificial refrigeration.
  • Page 15 AUX air conditioner service manual high temperature mediums. It’s absolutely necessary to a refrigeration system without lack of the Compressor, Condenser, Throttle device and Evaporator. As to the other auxiliary parts, they are configured and constructed in order to promote the economy, the reliability and the safety of the system.
  • Page 16 AUX air conditioner service manual operation under the rating working status and the specified condition. ¢ È Heating capacity It means the total quantity of heat per unit time transferred by the air-conditioner to the closed space, room or area under the rating working status and specified condition. Unit: W or BTU.
  • Page 17 AUX air conditioner service manual electrical appliances and other factors. Basing on the experience, we can set the value of 150—240W/M (120—300W/M is applicable in more large room or space) as the cooling load per unit working area, and the actual applicable coverage area of the air-conditioner is the result of the cooling capacity being divided by the cooling load.
  • Page 18 AUX air conditioner service manual The rating current (A) of The section area of the plastic insulated leads (mm²) the air-conditioner Copper core Aluminum core (As per the nameplate) £ ¼ £ ½ 1(1.5) 6-10 1.5(2.5) 10-16 2.5(4) 16-25 4(6)
  • Page 19 AUX air conditioner service manual air-conditioner. Although the unit “W” is same as the one used for the cooling capacity, they have different practice signification: As we all know 1Hp=735.499W, which stands for the consumption power of the compressor, but the cooling capacity indicates the quantity of heat absorbed from the room by air-conditioner within a unit time.
  • Page 20 AUX air conditioner service manual Table1-7 the noise to the sense of the human beings: 20dB Silence Broadcasting room with nobody in 30dB Very quiet The odium with nobody in 40dB Almost insensible to the noise Inside the quiet library...
  • Page 21 AUX air conditioner service manual Section three the basic structure of the air-conditioner Air-conditioner is the kind of machine that performs the function of cooling and heating by utilizing the heat-absorbing and heat-releasing consequence caused by the state variation of the refrigerant.
  • Page 22 AUX air conditioner service manual ¢ Ú Rotary type The electric motor of the Rotary type compressor is on its top, and the compressor is at the bottom. The whole cylinder almost soaked in the freezing oil completely. The rotor inside the cylinder rolls on the surface of the cylinder wall with the guide of the eccentric shaft.
  • Page 23 AUX air conditioner service manual air-inlet pipe, “J” air-vent pipe and the pole sleeve. There is no connection between two pipes. The separator is connected with the compressor by the air-inlet pipe. The filter net at the entrance of the separator has the function of gas &...
  • Page 24 AUX air conditioner service manual a) Evaporator: Evaporator is also called cooler. It is the apparatus used for direct cooling purpose in the refrigerating cycle and is usually installed inside the indoor unit. The evaporator applied in the air-conditioner is the wing coil type with high heat transmission coefficient and compact structure.
  • Page 25 AUX air conditioner service manual For the purpose of enhancing the heat exchange coefficient of the condenser, the number of the wings can be increased or the interval distance between the wings can be shortened. Because there is no condensing water being produced by the wings of the condenser, and there is no much air resistance as the evaporator faces, the distance between the wings can be shortened accordingly.
  • Page 26 AUX air conditioner service manual To the air-conditioner with a large evaporating surface area, usually, the coil pipes of the evaporator are ranked together side by side. For enhancing the evaporation efficiency, the liquid distributor is in need to be assembled for having the refrigerant enter into the evaporator equably in various routes.
  • Page 27 AUX air conditioner service manual The electromagnetic reversing valve consists of two parts. One is the solenoid guiding valve; the other one is four- way commutating valve. The solenoid guiding valve usually controls the four-way valve by three guiding capillary tubes. The structure is as the above picture:...
  • Page 28 AUX air conditioner service manual heat exchanger (as condenser) for heat transmission process passing through pipe C, and enters into the indoor heat-exchanger (evaporator) passing through capillary tube. Finally, it will enter into pipe S from pipe E and return back to the compressor for concluding a refrigerating cycle. The flow process...
  • Page 29 AUX air conditioner service manual ¢ Ú one-way Valve Check valve is also called anti-reverse valve. it permits the refrigerant to flow in only one direction in the refrigeration system, and to be installed in the pipes for preventing process flow from reversing.
  • Page 30 AUX air conditioner service manual It’s not reliable to rely on the electromagnetic reversing valve only for controlling the flow direction of the refrigerant due to great disparity existing in the working conditions between the cooling and heating modes of the heat pump air conditioner. Hence, the one-way valve is always applied in the heat pump air-conditioner in order to switch the refrigerant’s flow directions safely and effectively as...
  • Page 31 AUX air conditioner service manual outdoor units. Inside the position regulator entry, there are valve rod and valve hole seat. A graphite cotton rope (or oil-proof rubber) sealing ring is fixed at the middle position of the valve rod and impacts the valve rod by the force of the fastening screw so as to prevent the gas leaking from the valve rod.
  • Page 32 AUX air conditioner service manual The pressure switch used for the air-conditioner includes two types: high pressure switch and low pressure switch. They are composed of the screw joint entry, thin shell film flake, dynamic contact point, static contact point and mandril etc. Such as the picture 2-16£ º...
  • Page 33 AUX air conditioner service manual ¢ Î The other parts:...

  • Page 34: Chapter 2 Introduction Of Aux Products

    AUX air conditioner service manual Chapter 2 Introduction of AUX products Section one he basic functions introduction of Electric controller Ⅰ.The characteristics of the appearance and structure 1. The appearance photos of the outdoor unit outdoor unit 1 outdoor unit 2 outdoor unit 3 2.
  • Page 35 AUX air conditioner service manual ⑷The air vane’s automatic swing function and the position setting function; ⑸The buzzer’s driving function; ⑹The indoor fan’s driving function; ⑺The timing on-off function; ⑻The compressor restarting protection function; ⑼The indoor heat-exchanger overheating protection function under heating mode;...
  • Page 36 AUX air conditioner service manual protection), the wind speed of the indoor fan is high wind, the running mode is cooling mode, and the wind door is maximum opening. b) There are no anti-freezing protection and high temperature-preventing protection during trial operation.
  • Page 37 AUX air conditioner service manual ⑧Automatic wind-speed control： TA - TS≥3℃，wind-speed works in high wind; TS +1℃≤TA＜TS +3℃，wind-speed works in middle wind; TA – TS＜1℃，wind-speed works in low wind; Without 3 minutes delay when the wind speed turns from the high wind from the low wind, otherwise with 3 minutes delay;...
  • Page 38 AUX air conditioner service manual ⑹Ventilation mode Under ventilation mode, the outdoor unit is always off, and the indoor fan runs according to the default wind-speed. The remote control can be set with three types wind-speed, e.g. high fan, low fan and silent fan except the strong fan;...
  • Page 39 AUX air conditioner service manual ⑨Anti cold-wind and Residual-heat Removing function: TE controls the wind speed of the indoor fan, and the specific conditions are as below: ●The anti cold-wind status when the compressor runs: a) When TE in rise status and at the moment of TE＜TE1，the indoor fan turns off；TE2≤TE＜TE3，...
  • Page 40 AUX air conditioner service manual indoor fan stops immediately. ⑩Overheated protection： a)When heating function runs，if TE≥TE9 and last for 10seconds，the outdoor fan stops；if TE≥TE10 and last for 10seconds, then stop the compressor；When TE< TE11 and after the 3 minutes protection delay, the compressor resumes normal working.
  • Page 41 AUX air conditioner service manual the temperature difference correction value shall be -1℃，if the wind speed of the indoor fan rises by one gear, the temperature difference correction value shall be +1℃. ● a)The accumulated operation time of the compressor≥3hour；...
  • Page 42 AUX air conditioner service manual The sleeping process under cooling mode: Setting temperature rises another 1℃ rises 1℃ Previous Setting temperature 7h（end sleeping process，turn off） The sleeping process under heating mode: Setting temperature Previous setting falls 2℃ temperature Falls another 2℃...
  • Page 43 AUX air conditioner service manual light on 1 second Sleep light on 1 second Each phase of the stepping motor’s motion in 1 second the indoor fan runs for 1 second at low fan speed and middle fan speed separately the compressor’s motion for 1 second...
  • Page 44 AUX air conditioner service manual swing, the swing angle will never change； ⑥After turning off the air-conditioner and stopping the running of the indoor fan, the air door shut off automatically; ⑦Enter into the automatic mode by pressing the Emergency button, the air door opens after the setting mode of the system starts.
  • Page 45 AUX air conditioner service manual equipped with the corresponding E main chip, the “I feel” function shall be equipped with the corresponding remote controller, and the “Negative ion” shall be equipped with the corresponding relay. ①Auto-restart control function a)The setting method for Auto-restart function: After the controller being electrified, press the sleeping button on the remote control for 10 times within 5seconds towards to the controller, later, if the Auto-restart function is successfully set, there are four sounds delivered from the buzzer;...
  • Page 46 AUX air conditioner service manual Ⅲ .The basic function introduction o f the split wall-mounted type Electric controller (18000BTU~24000BTU) 1. The basic conditions for the operation of the controller ⑴The applicable voltage range of the electrical power: The input voltage 103 V – 230V;...
  • Page 47 AUX air conditioner service manual b) When 20℃< TA < 27℃, the controller enters into the dehumidifying mode and follows the mode in working. The setting temperature is 24℃ and the setting wind speed is strong wind; c) When TA≤20℃, the controller enters into the heating mode and follows the mode in working (The cooling only type runs with the ventilation mode).
  • Page 48 AUX air conditioner service manual 16℃ - 32℃. The setting temperature can be adjusted through the button of “+” “-”. The setting wind speed can be adjusted through the button of “wind speed selection” in the selection of the four wind speeds type, such as strong wind, high wind, low wind and mute wind.
  • Page 49 AUX air conditioner service manual ②Under the dehumidification mode, after the 3 minutes delay conditions being meet satisfactorily, the performance of the compressor and the outdoor fan is as following: a)TA ≥ TS+2℃，the compressor and the outdoor fan works continuously, the wind speed retains the setting wind speed;...
  • Page 50 AUX air conditioner service manual ⑺Heating mode The setting temperature can be decided and adjusted by the remote control within the control range of 16℃ - 32℃ through the button of temp. Add “+” and temp. Reduce “-”. Press the button “wind speed option”...
  • Page 51 AUX air conditioner service manual Anti-cold wind when compressor runs： ①When TE is in rise status, if Te<30℃,the indoor fan turns off;30℃≤TE＜38℃,the indoor fan runs at low fan speed;Te≥38℃, the indoor fan runs at setting wind speed; ②When Te in fall status, if TE>34℃,the indoor fan runs at the setting fan speed;28℃＜TE≤34℃,the indoor fan runs at the low fan speed;TE≤28℃，the indoor fan turns off.
  • Page 52 AUX air conditioner service manual the 10second of process of residual heat removal, if TE< 35℃, the indoor fan turns off at once. ⑾Anti-high temperature protection： ①when run on Heating mode，if TE≥57℃ and continuously last 10 seconds, the outdoor fan stops; if TE≥64℃...
  • Page 53 AUX air conditioner service manual ④The auxiliary electric heating may be allowed to restart after 1 minutes rest if the auxiliary electric heating quit during the operation process of the compressor. ⑼ Sleeping control function The sleeping function is valid during the automatic, cooling, dehumidifying and heating process. The indoor fan runs at low fan speed during sleeping mode, and the sleeping indication light on;...
  • Page 54 AUX air conditioner service manual The timing turns off function can be set only under the running status of the air-conditioner. The timing range is 1min.-24hour. The air-conditioner stops automatically once the setting timing reached. ②Timing turns on The timing turns on function can be set only under the running status of the air-conditioner. The timing range is 1min.-24hour.
  • Page 55 AUX air conditioner service manual (Picture 3)It shows the swing angles of the types 18000BTU and 24000BTU stepping motor，the air door’s swing angle of 18000BTU,24000BTU and 7000BTU,12000BTU are same，but the swing directions of the motors are not same. ①Once being electrified, the air door effect a motion of totally closed, and the swinging speed is 1 step/4ms；...

  • Page 56: Optional Functions

    AUX air conditioner service manual 18000BTU-24000BTU are RP plastic-sealed motor， the rotate speed can not be controlled by the PCB. ⒂Optional functions The below functions’ programs are already write into the Main chip of the PCB, and can be performed if only the corresponding hardware is available.
  • Page 57 AUX air conditioner service manual When the indoor fan is working, press the negative ion function button on the remote control, and the negative ion relay in the controller turns on for starting the output of the negative ions; When the negative ion function is on, press the negative ion function button on the remote control, and the negative ion relay in the controller turns off for stopping the output of the negative ion;...
  • Page 58 AUX air conditioner service manual Section two the tech. parameter of part products 1、Parameter for R22 、H Series、208-230V/60HZ products Model ASW-09A2/H# ASW-H09A2/H# ASW-12A2/H# ASW-H12A2/H# Item Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Type Wall -mounted Wall -mounted Wall -mounted...
  • Page 59 AUX air conditioner service manual Rated Heating test condition Indoor unit: DB:20℃, WB:------ Outdoor unit: DB:7℃, WB:6℃ Max. Cooling test condition Indoor unit: DB:32℃, WB:23℃ Outdoor unit: DB:43℃, WB:26℃ Max. Heating test condition Indoor unit: DB:27℃, WB:------ Outdoor unit: DB:24℃, WB:18℃...
  • Page 60 AUX air conditioner service manual Rated Cooling test condition Indoor unit: DB:27℃, WB:19℃ Outdoor unit: DB:35℃, WB:24℃ Rated Heating test condition Indoor unit: DB:20℃, WB:------ Outdoor unit: DB:7℃, WB:6℃ Max. Cooling test condition Indoor unit: DB:32℃, WB:23℃ Outdoor unit: DB:43℃, WB:26℃...
  • Page 61 AUX air conditioner service manual Protection equipment EXTERNAL EXTERNAL EXTERNAL EXTERNAL Rated Cooling test condition Indoor unit: DB:27℃, WB:19℃ Outdoor unit: DB:35℃, WB:24℃ Rated Heating test condition Indoor unit: DB:20℃, WB:------ Outdoor unit: DB:7℃, WB:6℃ Max. Cooling test condition Indoor unit: DB:32℃, WB:23℃...
  • Page 62 AUX air conditioner service manual Refrigerant/Charge (g) R22/1050 R22/1290 Protection equipment Inner Inner Model ASW-18B2/E# ASW-H18B2/E# ASW-24B2/E# ASW-H24B2/E# Item Indoor Outdoor Indoor Outdoor Indoor Outdoor Indoor Outdoor Type Wall -mounted Wall -mounted Wall -mounted Wall -mounted Cooling capacity Heating capacity...
  • Page 63 AUX air conditioner service manual Rated Heating test condition Indoor unit: DB:20℃, WB:------ Outdoor unit: DB:7℃, WB:6℃ Max. Cooling test condition Indoor unit: DB:32℃, WB:23℃ Outdoor unit: DB:43℃, WB:26℃ Max. Heating test condition Indoor unit: DB:27℃, WB:------ Outdoor unit: DB:24℃, WB:18℃...
  • Page 64 AUX air conditioner service manual Rated Cooling test condition Indoor unit: DB:27℃, WB:19℃ Outdoor unit: DB:35℃, WB:24℃ Max. Cooling test condition Indoor unit: DB:32℃, WB:23℃ Outdoor unit: DB:43℃, WB:26℃ 4、Parameter for R22 、M Series、115V/60HZ products Model ASW-09A3/M ASW-H09A3/M ASW-12B3/M ASW-H12B3/M...
  • Page 65 AUX air conditioner service manual Rated Heating test condition Indoor unit: DB:21.1℃, WB: 15.6℃ Outdoor unit: DB:8.3℃, WB:6.1℃ Max. Cooling test condition Indoor unit: DB:32.2℃, WB:222.8℃ Outdoor unit: DB:43.3℃, WB:25.6℃ Max. Heating test condition Indoor unit: DB:26.7℃, WB:------ Outdoor unit: DB:23.9℃, WB:18.3℃...

  • Page 66: Section Three Introductions Of The Optional Functions

    AUX air conditioner service manual Section three Introductions of the optional functions 1. Intelligent defrosting The defrosting judgment basing on the variety of the indoor coil temperature is more precise than the traditional one basing on the variety of the outdoor coil temperature. The former ensures the defrosting precision in case of the mistaking defrosting function happen when there is no frost outdoor, and henceforth enhances the average heating capacity so as to realize the energy saving function.
  • Page 67 AUX air conditioner service manual 5. Music reminding button Every press on the button derivates the reminding music which is same as the functions of the buttons on the mobile phone. 6. The specification of the sterilization function The dust particles accumulated on the filter net may cause the second pollution to the filter after a certain period in use, which seriously affects the quality of the air.
  • Page 68 AUX air conditioner service manual Chapter 3 Exploded views of AUX air-conditioner Section one E series products 1. ASW-H09A2/ET Indoor unit exploded view...
  • Page 69 AUX air conditioner service manual Detailed part list of ASW-H09A2/ET indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel É ± ¾ ú ¹ ý Â Ë Í ø Anti-bacterial Filter Î ¬...
  • Page 70 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 71 AUX air conditioner service manual Detailed part list of ASW-H09A2/ET outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 72 AUX air conditioner service manual 2. ASW-H09A2/EC Indoor unit exploded view...
  • Page 73 AUX air conditioner service manual Detailed part list of ASW-H09A2/ET indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel É ± ¾ ú ¹ ý Â Ë Í ø Anti-bacterial Filter Î ¬...
  • Page 74 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 75 AUX air conditioner service manual Detailed part list of ASW-H09A2/EC outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 76 AUX air conditioner service manual 3. ASW-H12A2/ET Indoor unit exploded view...
  • Page 77 AUX air conditioner service manual Detailed part list of ASW-H12A2/ET indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel É ± ¾ ú ¹ ý Â Ë Í ø Anti-bacterial Filter Î ¬...
  • Page 78 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 79 AUX air conditioner service manual Detailed part list of ASW-H12A2/ET outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 80 AUX air conditioner service manual 4. ASW-H12A2/EC Indoor unit exploded view...
  • Page 81 AUX air conditioner service manual Detailed part list of ASW-H12A42EC indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel É ± ¾ ú ¹ ý Â Ë Í ø Anti-bacterial Filter Î ¬...
  • Page 82 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 83 AUX air conditioner service manual Detailed part list of ASW-H12A2/EC outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 84 AUX air conditioner service manual 5. ASW-H18B2/ET Indoor unit exploded view...
  • Page 85 AUX air conditioner service manual Detailed part list of ASW-H18B2/ET indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel ´ ó ± â Í · × Ô ¹ ¥ Â Ý ¶ ¤...
  • Page 86 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 87 AUX air conditioner service manual Detailed part list of ASW-H18B2/ET outdoor unit Chinese Name Name Material Number × ó ² à Ö § ³ Å ° å Left-side supporting plate ¸ Ö Ë ¿ Í ø Õ Ö Steel grille ´...
  • Page 88 AUX air conditioner service manual 6. ASW-H24B2/ET Indoor unit exploded view...
  • Page 89 AUX air conditioner service manual Detailed part list of ASW-H24B2/ET indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel ´ ó ± â Í · × Ô ¹ ¥ Â Ý ¶ ¤...
  • Page 90 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 91 AUX air conditioner service manual Detailed part list of ASW-H24B2/ET outdoor unit Chinese Name Name Material Number × ó ² à Ö § ³ Å ° å Left-side supporting plate ¸ Ö Ë ¿ Í ø Õ Ö Steel grille ´...

  • Page 92: Section Two H Series Products

    AUX air conditioner service manual Section two H series products 1. ASW-H09A2/HSF Indoor unit exploded view...
  • Page 93 AUX air conditioner service manual Detailed part list of ASW-H09A2/HSF indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel ¹ ý Â Ë Í ø × é ¼ þ Filter µ ç Æ ÷ ¸ Ç ° å...
  • Page 94 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 95 AUX air conditioner service manual Detailed part list of ASW-H09A2/HSF outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 96 AUX air conditioner service manual 2. ASW-H09A2/HSL Indoor unit exploded view...
  • Page 97 AUX air conditioner service manual Detailed part list of ASW-H09A2/HSL indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel ¹ ý Â Ë Í ø × é ¼ þ Filter µ ç Æ ÷ ¸ Ç ° å...
  • Page 98 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 99 AUX air conditioner service manual Detailed part list of ASW-H09A2/HSL outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 100 AUX air conditioner service manual 3. ASW-H09A2/HS Indoor unit exploded view...
  • Page 101 AUX air conditioner service manual Detailed part list of ASW-H09A2/HS indoor unit Chinese Name Name Material Number Ã æ ° å × é ¼ þ Panel ¹ ý Â Ë Í ø × é ¼ þ Filter µ ç Æ ÷ ¸ Ç ° å...
  • Page 102 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 103 AUX air conditioner service manual Detailed part list of ASW-H09A2/HS outdoor unit Chinese Name Name Material Number Ã æ ° å Í ø Õ Ö Steel grille Ã æ ° å × é ¼ þ Front panel ¶ ¥ ¸ Ç ° å...
  • Page 104 AUX air conditioner service manual 4. ASW-H18B2/HS Indoor unit exploded view...
  • Page 105 AUX air conditioner service manual Detailed part list of ASW-H18B2/HS indoor unit Chinese Name Name Material Number ¹ ý Â Ë Í ø × é ¼ þ Filter Â Ý ¶ ¤ ¸ Ç Screw cover Ö Ð ¿ ò × é ¼ þ...
  • Page 106 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 107 AUX air conditioner service manual Detailed part list of ASW-H18B2/HS outdoor unit Chinese Name Name Material Number × ó ² à Ö § ³ Å ° å Left-side supporting plate ¸ Ö Ë ¿ Í ø Õ Ö Steel grille ´...
  • Page 108 AUX air conditioner service manual 5. ASW-H24B2/HS Indoor unit exploded view...
  • Page 109 AUX air conditioner service manual Detailed part list of ASW-H24B2/HS indoor unit Chinese Name Name Material Number ¹ ý Â Ë Í ø × é ¼ þ Filter Â Ý ¶ ¤ ¸ Ç Screw cover Ö Ð ¿ ò × é ¼ þ...
  • Page 110 AUX air conditioner service manual Outdoor unit exploded view...
  • Page 111 AUX air conditioner service manual Detailed part list of ASW-H24B2/HS outdoor unit Chinese Name Name Material Number × ó ² à Ö § ³ Å ° å Left-side supporting plate ¸ Ö Ë ¿ Í ø Õ Ö Steel grille ´...
  • Page 112 AUX air conditioner service manual Section 3 Exploded View of M Series (9000-12000Btu/h) 1. Indoor unit exploded view...
  • Page 113 AUX air conditioner service manual Detailed part list of M series indoor unit Name of part Remark Hanging board assembly Chassis Clamping prop for tube line Bearing for air leaves Through-flow fan leaves Plastic-sealed electric motor Left-hand propping holder for vaporizer...
  • Page 114 AUX air conditioner service manual 2. Outdoor unit exploded view...
  • Page 115 AUX air conditioner service manual Detailed part list of the outdoor unit (Cooling only Type) Name of part remark Top cover Cover for electric unit Right-hand board Condenser assembly Holder for electric motor Outdoor electric motor Axial-flow wind leaves Holder for wiring...
  • Page 116 AUX air conditioner service manual...
  • Page 117 AUX air conditioner service manual Detailed part list of the outdoor unit (Heat pump Type) Name of part remark Top cover Cover for electric unit Right-hand board Condenser assembly Holder for electric motor Outdoor electric motor Axial-flow wind leaves Holder for wiring...

  • Page 118: Issues To The Series Products Of 9000Btu~12000Btu

    AUX air conditioner service manual Chapter 4 The disassembly and the relating attention issues to the part of AUX product Section one the disassembly and the relating attention issues to the series products of 9000BTU~12000BTU Attention: Turn off the air-conditioner and pull out the plug of the power supply before the service.
  • Page 119 AUX air conditioner service manual Part Operation Process Remark Electrical 1) Do No. “1” firstly; component 2) Pull out all tie-in connecting with PCB and the temperature sensor, etc.; 3) Screw off the screws and bolts as indicated in the picture. Untie the outdoor unit’s interconnection cord and...
  • Page 120 AUX air conditioner service manual 2. Outdoor unit: Part Operation Process Remark General 1) Screw off one fastening bolt from the operation electrical box cover, and offload the box cover; 2) Pull out the interconnection cord from the electrical box;...
  • Page 121 AUX air conditioner service manual Part Operation Process Remark Condenser 1) Do No.”1” and “2” firstly; 2) Screw off the two fastening bolts; 3) Weld off the inlet and outlet tube; 4) Offload the condenser. Compressor 1) Do No.”1” , “2”and “3” firstly;...
  • Page 122 AUX air conditioner service manual Section Two the disassembly and the relating attention issues to the series product of 18000BTU~24000BTU Attention: Turn off the air-conditioner and pull out the plug of the power supply before the service. 2. Indoor unit:...
  • Page 123 AUX air conditioner service manual Part Operation Process Remark Electrical 1) Do No. “1” firstly; component 2) Pull out all tie-in connecting with PCB and the temperature sensor, etc.; 3) Screws off the screws and bolts at the three positions indicated in the picture.
  • Page 124 AUX air conditioner service manual 2. Outdoor unit Part Operation Process Remark General 1) Screw off one fastening bolt from the operation electrical box cover, and offload the box cover; 2) Pull out the connecting cord from the electrical box;...
  • Page 125 AUX air conditioner service manual Part Operation Process Remark Compressor 1) Do “1” ,“2”, “3” firstly; 2) Open the cover of the compressor, and loosen the connecting cables; 3) Weld off the inlet and outlet tubes of the compressor; 4) Screw off three flat nuts;...

  • Page 126: Chapter 5 Troubleshooting And Electrical Chart Of Aux Air Conditioner

    AUX air conditioner service manual Chapter 5 Troubleshooting and electrical chart of AUX air conditioner Section one basic faults diagnose process of 9000BTU~12000BTU products Troubleshooting Guide 1. The Foremost Inspecting Items ¢ Å The input voltage must be within +10% tolerance of the rated Voltage. If it is not the case, the air-conditioner will probably not work normally.
  • Page 127 AUX air conditioner service manual 3. The Indoor Fan Motor Does Not Work ¢ Å Items a) Check if the indoor fan motor is connected correctly to the connector (CN8)? b) Check if the AC input voltage is correct? c) Check if the IC of indoor fan motor is connected correctly to the connector (CN2)? d) Check if the capacity of indoor fan motor is connected correctly to the connector (CN8)? ¢...
  • Page 128 AUX air conditioner service manual 4. The Outdoor Unit Does Not Work ¢ Å Items a) Check if the input voltage is correct? b) Check if the wire connection of the outdoor connecting terminal is correct? ¢ Æ Trouble shooting procedure...
  • Page 129 AUX air conditioner service manual 5. The Step Motor Does Not Work ¢ Å Items a) Check if the input voltage is correct? b) Check if the step motor controlling the up-down movement firmly connected to Cn2? ¢ Æ Trouble shooting procedure 6.
  • Page 130 AUX air conditioner service manual 7. Remote Control Can Not Work Trouble shooting procedure 8. The Failure Analysis of the Main Parts...
  • Page 131 AUX air conditioner service manual...
  • Page 132 AUX air conditioner service manual Section two basic faults diagnose process of 18000BTU~24000BTU products Troubleshooting Guide 1. The Foremost Inspecting Items ¢ Å The input voltage must be within +10% tolerance of the rated Voltage. If it is not the case, the air-conditioner will probably not work normally.
  • Page 133 AUX air conditioner service manual 3. The Indoor Fan Motor Does Not Work ¢ Å Items ¢ Ù Check if the indoor fan motor is connected correctly to the connector(CN8)? ¢ Ú Check if the AC input voltage is correct? ¢...
  • Page 134 AUX air conditioner service manual 4. The Outdoor Unit Does Not Work ¢ Å Items ¢ Ù Check if the input voltage is correct? ¢ Ú Check if the wire connection of the outdoor connecting terminal is correct? ¢ Æ Trouble shooting procedure...
  • Page 135 AUX air conditioner service manual 5. The Step Motor Does Not Work ¢ Å Items ¢ Ù Check if the input voltage is correct? ¢ Ú Check if the step motor controlling the up-down movement firmly connected to Cn2? ¢ Æ Trouble shooting procedure 6.
  • Page 136 AUX air conditioner service manual 7. Remote Control Can Not Work Trouble shooting procedure 8. The Failure Analysis of the Main Parts...
  • Page 137 AUX air conditioner service manual Section three Electric wiring diagram of AUX air conditioner 1.7000~12000BTU Electric wiring diagram£ º ¢ Å Indoor unit£ º...
  • Page 138 AUX air conditioner service manual ¢ Æ Outdoor unit£ º Black Fan Motor Fa n Mo to r R e d C a pac it or Br ow n O rientation Wh it e Valve O v er curr ent...
  • Page 139 AUX air conditioner service manual 2.18000BTU Electric wiring diagram ¢ Å Indoor unit Fro st Receiver panel Tran sform er Fan M ot or S tep Mot or Elim inating Ind ication panel P lug Fo rce Swi tch Controlli ng Pa nel...
  • Page 140 AUX air conditioner service manual ¢ Æ Outdoor unit£ º Bla ck Fan Motor Fan Motor T e mp e r a t u r e B rown W hi te Cap acitor Sensor Or ie nta ti o n...
  • Page 141 AUX air conditioner service manual 3.24000BTU Electric wiring diagram ¢ Å Indoor unit£ º Fr o st Re ce ive r p an el Fa n Mo t o r Ste p Mo t or Tr an s fo r mer...
  • Page 142 AUX air conditioner service manual ¢ Æ Outdoor unit£ º £ ¨ Single pole AC. Contractor wiring diagram£ © Bla ck Fa n Mo to r Fa n mo to r Ca pa cit o r Wh it e Bla ck...
  • Page 143 AUX air conditioner service manual ¢ Ç Outdoor unit£ ¨ Double pole AC. Contractor wiring diagram£ © Bl ac k Fan M oto r Fa n mo to r Ca pa c i to r Re d R ed Wh ite...
  • Page 144 AUX air conditioner service manual Chapter 6 Introduction of the regular service tools for air-conditioner The regular service tool and application 1. Vacuum Pump Vacuum pump is a device used in vacuumize for the mini type refrigerating equipment. The common vacuum pump in practice is the revolving blade type.
  • Page 145 AUX air conditioner service manual There is only one cylinder installed in the Single-stage rotary Vacuum pump. Inside the cylinder, the rotor is eccentrically mounted inside the cylinder. There are two rotary blades fixed inside the rotor groove, and two of them are oppressed tightly to the surface of the cylinder by the central spring force and the centrifugal force produced in the process of rotation.
  • Page 146 AUX air conditioner service manual knob of valve in counterclockwise direction may enlarge the size of the valve bore, and the corresponding tubing will get through with the gas path of the outdoor unit. The refrigerating system always gets through with the pressure gauge on the three-way mend valve without concerning the position of the knob.
  • Page 147 AUX air conditioner service manual Picture6-4 Expander Picture6-5 Structure of expander 5. Tube-cutting knife The tube-cutting knife is usually used for cutting the copper tubes in different lengths and diameters when repairing or installing the air-conditioner. The types of the tube-cutting knife are various. The common structure is as Picture 6-6 shows.
  • Page 148 AUX air conditioner service manual 6. Tube bender Tube bender is the tool used to change the configuration of the copper tube or process the copper tube in a certain figure. The types of the tube bender are various and it is applicable in bending the copper tube with the diameter less than 20mm.
  • Page 149 AUX air conditioner service manual meter pen of the clamp meter can be freely used without consideration of the selection between positive and negative pole. When measuring the direct current voltage, turn the on-off switch to the category of the DCV (DC voltage) , pay attention to select a measurement range larger than the voltage to be measured, and confirm the polarity of the voltage to be measured.

  • Page 150: Chapter 7 Failure Analysis And Inspection Of Electrical Control System

    AUX air conditioner service manual Chapter 7 Failure Analysis and Inspection of Electrical Control System Air conditioner can be controlled by both strong-current circuit control panel and weak-current electronic circuit control panel, control philosophies of which are different, so fault analysis procedures of the two types shall be described separately: Electrical system is the device to control and protect refrigerating system and fan system.
  • Page 151 AUX air conditioner service manual (5)Heat pump air conditioner fails to heat If air conditioner can produce cooling air but fail to produce heating air, there must be some faults in magnetic reversing valve or switch. ¢ Ù Magnetic loop of magnetic valve has burnt out or broken out because of: a¡...
  • Page 152 AUX air conditioner service manual lower than rated value; ¢ Ú Over-current on compressor: check if heat protector on the compressor pump shell has broken off. Normally, heat protector will break off if current is excessively large. Heat protector of three phase motor is embedded in motor winding in pump shell.
  • Page 153 AUX air conditioner service manual three- phase. Single phase motor has two windings, i.e. startup winding and running winding. There’re 3 binding posts, in shell junction box of compressor. They are marked by A, B and C individually, representing running post, startup post and common post. R and S are series connection points of two windings, resistance value is sum of startup and running winding resistances;...
  • Page 154 AUX air conditioner service manual winding touching shell can also occur in three phase motor. Check the faults with universal meter. For star- type connection motor, resistance can be measured individually; for triangle- type connection motor, three windings shall be disconnected before resistance values are measured.
  • Page 155 AUX air conditioner service manual a¡ ¢ Commute, demodulation, switch and stabilivolt diode. Remove diode from electrical panel, check its single phase conductivity with R×1K and R×100 of universal meter. Check method: contact two ends of diode with two handles of meter, record the resistance value, then change two handles with each other and measure again.
  • Page 156 AUX air conditioner service manual noise can be heard. Cause analysis: according to clients description and phenomena analysis, we presumed that indoor motor couldn’t provide power properly; checked power voltage of indoor motor, it was 100V voltage when motor was switched off; when switched off, motor still moved slowly, and produced heat and...
  • Page 157 AUX air conditioner service manual Reason Analysis: to check remote controller, point the remote controller to an ordinary radio and push any buttons on it, radio responded, so remote controller worked well, and there must be some faults in main control panel or receiver of remote controller of indoor unit. Opened outside cover of indoor unit to check 220V input power and 12V and 5V voltage, and found that they functioned properly;...
  • Page 158 AUX air conditioner service manual when indoor temperature sensor and heat exchanger exceed 25 Celsius degree, fan produces gentle wind; when temperature exceeds 38 Celsius Degree, fan produces wind of set velocity. We checked and found that wind velocity is very low, and wind temperature is quite high, so fan works well. So we presumed that the sensor failed to reflect the correct temperature, and then indoor fan can’t run at set...
  • Page 159 AUX air conditioner service manual the lamp was turned off, air conditioner functioned properly. When lamp was turned on, we checked receiver and found 2V AC electricity on the input end; when we turned out the lamp, and didn’t operate remote controller, there’s no voltage on receiver.
  • Page 160 AUX air conditioner service manual on plastic panel may deform, so buttons may fail to work. In this case, control panel shall be replaced with same model product. Case 9 Compressor low -pressure can’t be started up Product Model£ º ASW-H12A4/HS Phenomena£...
  • Page 161 AUX air conditioner service manual when we’re repairing air conditioners and avoid replicated work. Case 12 Transformer Failure Product Model£ º ASF-H18A4/FS Phenomena: air conditioner didn’t function after it was turned on Cause Analysis: checked power supply, there’s 220V input power, so power supply circuit has no problem.

  • Page 162: Chapter 8 Troubleshooting Guide For Refrigerating System

    AUX air conditioner service manual Chapter 8 Troubleshooting guide for Refrigerating System Refrigerating system faults are very common to air conditioners; faults are various but they still have some rules and also many maintenance experiences for reference. Troubleshooting steps here for refrigerating system are not a must, but can be followed to eliminate faults.
  • Page 163 AUX air conditioner service manual there is some leak source, refrigerant will leak out and air conditioner can’t cooling proper or absolutely stop refrigerating. Leakage sources locate mainly on welds of evaporator, condenser, and capillary, return gas and discharge tube of compressor, flare mouth, copper nut, connection tubes and etc.
  • Page 164 AUX air conditioner service manual pressure hose with vacuum pump and vacuum the system. ¢ Ú Tighten thimble head; Discharge air in the hose with refrigerant steam in system or refrigerant in the bottle. If small refrigerant bottle has been connected with hose and vacuum pumping has been done, there’s no need to discharge air.
  • Page 165 AUX air conditioner service manual shall be no less than 10¡ æ and in heating operation, temperature difference shall be over 15¡ æ ; ¢ Ý High pressure: High pressure value of cooling operation shall be about 1.5~1.9MPa; ¢ Þ...
  • Page 166 AUX air conditioner service manual Pollution degree of refrigerating system can be classified as: slightly polluted and seriously polluted. When system is slightly polluted, condensed oil in it has not been polluted completely, and if refrigerant and lubricant is released from line of compressor, it is transparent and will become light yellow(normally they should be in white) if tested with litmus paper.
  • Page 167 AUX air conditioner service manual Generally, system shall be purged under a pressure of 0.6MPa which can be pressurized with refrigerating compressor, nitrogen bottle or air compressor (compressed air can’t be used in Freon system). System shall be blown in sections, with dirt outlet set on the lowest point of each section.
  • Page 168 AUX air conditioner service manual ¢ Û ¡ ¢ Weld high pressure tube first, and then the middle one of three low pressure tubes, finally left and right tubes; ¢ Ü ¡ ¢ Select proper welding machine, flame shall be adjusted and can weld the valve immediately. Pack the valve body with wet towel to avoid burning rubber and nylon sealing elements in it and causing the leakage of four-way valve.
  • Page 169 AUX air conditioner service manual burned or components can’t start up. So clearance scope between pistol and cylinder is very small. For Dia¦ Õ 50mm cylinder without pistol ring, fit clearance shall be within 0.011~0.018mm. If pistol or cylinder wears out severely, when pistol compresses and exhaust the gas, a part of gas in cylinder will leak into pump shell through clearance, so compressor can reach its original discharge capacity;...
  • Page 170 AUX air conditioner service manual Symptom is: when air conditioner is switched on, fuse protector breaks or air protector trips immediately. There’re three reasons for this symptom: a) Because motor stator windings have burn out, and insulation layer of electromagnetic loop has been broken and windings touch the motor shell and are short circuited.
  • Page 171 AUX air conditioner service manual Cause Analysis: turned on the air conditioner, it could run normally. Checked filter of indoor unit and heat exchangers, and found that they were quite clean and wouldn’t impact the cooling efficiency. Checked capacitors and all parameters of indoor and outdoor fans, voltage was 220v, current was 13.5A, low pressure was 0.4MPa and there’s no extension line, outdoor compressor also run normally,...
  • Page 172 AUX air conditioner service manual analyze this phenomenon, we shall check whether air flow of indoor unit is sufficient. If it is in normal condition, check whether there’s secondary flow restriction; judge the fault by analyze phenomena carefully. Case 4: Filter of outdoor unit was blocked by dirt Unit Model£...
  • Page 173 AUX air conditioner service manual conditioner run 5 minutes, and evaporator of indoor unit was frosted, so we presumed that refrigerant was not sufficient; we checked and found that low pressure was 3KG. Turned off air conditioner, checked indoor & outdoor units and connection tube and found oil stain on the junction of low pressure copper tube.
  • Page 174 AUX air conditioner service manual condenser, so refrigerant leaked out. Solution: repair-welded leak source and added refrigerant Experience Conclusion: when air conditioner is running, system pressure is zero, we can judge that refrigerant leaks out; generally, oil stain can be seen on leak sources. Maintenance personnel shall be familiar with blinking conditions of indicator.
  • Page 175 AUX air conditioner service manual tubes, the one connecting discharge pipe of compressor was hot, and other three were also a little hot. Turned on the air conditioner in heating mode, heating efficiency was also unsatisfactory. So we were sure that four-way valve had some problems.
  • Page 176 AUX air conditioner service manual Experience Conclusion: valve is too tight, so system is obstructed and then frosted. When refrigerating efficiency of new unit was unsatisfactory, do not add refrigerant without careful consideration. Case 15 Air conditioner was blocked by dirt Unit Model£...
  • Page 177 AUX air conditioner service manual Phenomena£ º Refrigerating efficiency was unsatisfactory, outdoor unit stopped to run after it operated for some time. Cause Analysis: air conditioner was installed last year, and failed to run properly since then. Maintenance personnel checked the air conditioner many times, and had following data: running current was 12.5A, pressure was 5kg.f/com2, inlet wind temperature was 12 Celsius Degree, and...
  • Page 178 AUX air conditioner service manual Case 19 Water entered the system in installation Unit Model£ º ASW-H12A4/H Phenomena£ º Air conditioner could be turned on but couldn’t produce cool air Cause Analysis: run air conditioner for 10 minutes, it could cool normally, pressure and current was normal;...

  • Page 179: Chapter 9 Maintenance Cases Of Noise And Water Leakage Of Ac

    AUX air conditioner service manual Chapter 9 Maintenance Cases of Noise and water leakage of AC Section one cases of air conditioner noise reduction Air conditioner noise is a common problem seen in our maintenance work, causes of which shall be paid attention to.
  • Page 180 AUX air conditioner service manual presumed that fault was on bearing bush of left blade. Replaced bearing bush, noise could still be heard. Maintenance personnel checked wind blades and found that they’re installed left to the center and blade axis touched rubber seat of bearing and produced noise when running.
  • Page 181 AUX air conditioner service manual Experience Conclusion: the said noise is wind sound, which isn’t beyond noise standard. In such case, do not change motor or controller without careful consideration. Case 4: Noise produced by friction between fan blade and wind baffle Unit Model No£...
  • Page 182 AUX air conditioner service manual Unit Model: ASW-12A4/A Phenomena£ º Indoor Noise Cause Analysis: the air conditioner was newly installed; according to client, noise of indoor unit was loud. Maintenance personnel of service network visited the client and checked the air conditioner many times and believed the appliance worked well, so client was unhappy.
  • Page 183 AUX air conditioner service manual tube and sheet-metal. We should install damp piece or insulation sleeve. ¢ Ç Vibration of compressor causes collision between copper tubes. Install insulation to isolate two tubes. In such case, we should explain to client that it’s not air conditioner fault, it is caused by improper installation and can be handled easily.
  • Page 184 AUX air conditioner service manual of two back branches was obviously lower, so system was blocked when it was welded. Released refrigerant, welded the system again and fault was eliminated. Solution: welded the copper tube again, air conditioner run normally Experience Conclusion: generally, air-stream sound was produced by over throttling, so we shall analyze causes for throttling.
  • Page 185 AUX air conditioner service manual Unit Model: ASW-H24A4/TB Phenomena£ º Outdoor unit made loud noise according to client Cause Analysis: according to client, noise made by air conditioner was not so loud in the daytime, but it was much louder at night. We turned on air conditioner; outdoor unit noise could be heard in the room.
  • Page 186 AUX air conditioner service manual long time. When evaporator is blocked by ice, fins of U-shaped tubes with large refrigerant flow will be in low temperature, while those with small refrigerant flow will be in higher temperature, so temperature difference between two circuits will be relatively large, which will produce a large number of condensate in the former fins.
  • Page 187 AUX air conditioner service manual Unit Model: ASW-12A4/M Phenomena£ º Indoor unit leaked water Cause analysis£ º air conditioner had been used for two years and never leaked water before, so it was not caused by improper installation, it was possibly caused by obstruction in water drain pipe. When air conditioner worked for a long time, condensate leaked from notch of basement connection tube.
  • Page 188 AUX air conditioner service manual Phenomena£ º Indoor unit leaked water Cause analysis£ º We turned on air conditioner, found that air pipe of indoor unit leaked, especially on left and right ends. This air conditioner adopted four-folded evaporator, two water collection channels:...
  • Page 189 AUX air conditioner service manual water couldn’t flow smoothly and water drain tube leaked. Solution: adjusted position of water drain tube.¡ £ Experience Conclusion: pay attention to details during installation and have water drain test after installation. Case 7: Water Drain Tube wasn’t wrapped tightly enough and leaked condensate Unit Model: ASW-07B4/HA Phenomena£...
  • Page 190 AUX air conditioner service manual Unit Model: ASW-H09A4/A Phenomena£ º Air conditioner leaked water after running for some time, evaporator was frosted or frozen. Cause Analysis: according to client, indoor unit leaked water. We turned on air conditioner and observed, after 10 minutes, water started to be blown from indoor fan. Disassembled shell, we found that 2-3 U-shaped fins near evaporator were very cold and covered with condensate, and other fins were not so cold;...
  • Page 191 AUX air conditioner service manual smooth, and water drain tube could discharge water normally. We opened indoor unit shell, checked and found that evaporator and basement were assembled properly, but there’s a leak between left bracket and left fin of evaporator, which leaked air. Affixed the leak with sponge and turned on air conditioner again.

  • Page 192: Appendix 1 Introduction To The Fault Display Code Of Aux Air Conditioner

    AUX air conditioner service manual APPENDIX 1 Introduction to the fault display CODE of AUX air conditioner 1. 70S .100S.120S.45T.50T.60T45TA.50TA.60TA.70T1£ ¬ when the faults happen, the LCD panel displays “fault” and the corresponding code. ¢ Å The fault of the indoor plastic temperature sensor£ º...
  • Page 193 AUX air conditioner service manual short circuit. ¢ È Fault 24 No load. ¢ É Fault 26 Outdoor over-current protection. ¢ Ê Fault 28 Outdoor voltage abnormal. ¢ Ë Fault 29 Outdoor electric source’s instant off. ¢ Ì Fault 2A Outdoor refrigeration’s overloading protection.
  • Page 194 AUX air conditioner service manual The “running” light and “swing” light are twinkling and last for 0.5/0.5 second, the other indication lights are invariable, and the system turns off. 4. ASF-H24B4/B, ASF-H41A5/B faults display and protection display: ¢ Å Fault of the Indoor temperature sensor£ º...
  • Page 195 AUX air conditioner service manual When the faults happen, the LED digital screen of the operation panel displays the corresponding code. ¢ Å Fault of The indoor temperature sensor£ º System turns off, and the LED digital screen of the operation panel displays “E1”.
  • Page 196 AUX air conditioner service manual PG motor feedback is Timing light twinkles 4 times in abnormal every 8 seconds Plastic temp. sensor is Timing light twinkles 1 times in abnormal every 8 seconds Copper temp. sensor Timing light twinkles 2 times in...
  • Page 197 AUX air conditioner service manual 12. Faults display of 18000BTU~24000BTU wall unit series air-conditioner£ º Non-digital tube displays: Fault source Display mode The display Appearance precedence level PG motor feedback is Timing light twinkles 1 System turns off abnormal time in every 8 seconds Plastic temp.
  • Page 198 AUX air conditioner service manual APPENDIX 2 Schematic Diagrams of some Controller Board 1. Schematic Diagram of Controller Board of E Series Air Conditioner with Display Screen (FUJITSU Chip) C N 9 F U S E Z N R F A C 3 .1 5 A /2 5 0 V...
  • Page 199 AUX air conditioner service manual 2. Schematic Diagram of Controller Board of EA Series Air Conditioner (Motorola Chip) CN10 VH-3 Room Fan Valve ABC EFG Out Fan VH-5 1.5U/450V COMP XH-10 XH-3 Ò£¿Ø R103 100-1/2w CRV2 15K/681 0.1U/275V 9012 9012...
  • Page 200 AUX air conditioner service manual 3. Schematic Diagram of Controller Board of HS Series Air Conditioner (Motorola Chip) CN10 WFAN CN11 ºì/°×Ïß VH-5 ºì/ºÚÏß COMP STF WFAN ABC EFG µç¼ÓÈÈÔ¤Áô ¸ºÀë×ÓÔ¤Áô 1.5U/500V XH-13 R103 CRV2 100-1/2w 0.1U/275V E101 R102 470U/25V...
  • Page 201 AUX air conditioner service manual 4. Schematic Diagram of Controller Board of E Series Air Conditioner with Display Screen(with Renesas Chip) CN10 VH-5A-3 CN11 TJC2A-2A CRV1 104/63V 0.1u/250V/K 1.5u/450V CRV2 R101 100/2W AT24C02A X2/0.1u FUSE 102/63V 3.15A/250V/F BT136 R102 1N4007...

  • Page 202: Appendix 3 Conversion Table Of Major Units

    AUX air conditioner service manual APPENDIX 3 Conversion Table of Major Units 1. Conversion Table of Pressure Units Unit mmHg kgf/cm 1.02¡ Á 10 9.87¡ Á 10 7.5¡ Á 10 1.450¡ Á 10 kgf/cm 9.8¡ Á 10 9.68¡ Á 10 7.36¡...
  • Page 203 AUX air conditioner service manual 4. Heat Conductivity Factors of Several Common Used Material Material λ kJ/m·h·¡ æ £ © Material λ kJ/m·h·¡ æ £ © Copper 1382 Cork 0.17-0.25 Aluminum Air Interlayer 0.25 Steel Water Frosty layer Glass 2.7-2.9 Fibre Glass 0.17-0.21...
  • Page 204 AUX air conditioner service manual Refrigeration Amount£ ¨ %£ © COP£ ¨ %£ © 92.5 Lubricate Type Mineral Oil Lubricate Inter-solubility Good Fair Fair...
  • Page 205 ADD:NO.1166 North MingGuang Road(AUX Technology Park),Jiang Shan Town,Ningbo,Zhejiang,P.R.China TEL:86-574-88220826 FAX:86-574-88220720 Http://www.cnaux.com E-mail:auxsales@mail.auxgroup.com...

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