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ROYAL CLIMA RCI-AN22HN/IN Service Manual

Inverter air conditioner
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Service Manual
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RCI-AN22HN/IN
RCI-AN28HN/IN
RCI-AN35HN/IN
Air Conditioner Service Manual
Inverter air conditioner
RCI-AN22HN/OUT
RCI-AN28HN/OUT
RCI-AN35HN/OUT
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Summary of Contents for ROYAL CLIMA RCI-AN22HN/IN

  • Page 1 Air Conditioner Service Manual Inverter air conditioner Service Manual Models RCI-AN22HN/IN RCI-AN22HN/OUT RCI-AN28HN/IN RCI-AN28HN/OUT RCI-AN35HN/IN RCI-AN35HN/OUT...

  • Page 2: Table Of Contents

    Air Conditioner Service Manual CONTENTS Part Ⅰ Technical Information ................3 1. Important Notice ........................3 2. Specifications… ........................4 2.1 The relation curve of CAPACITY-TEMPERATURE ................... 4 2.2 The relation curve of PRESSURE-TEMPERATURE ..................4 2.3 The relation curve of NOISE-COMPRESSURE OPERATION FREQUENCY ..........5 3.

  • Page 3: Part Ⅰ Technical Information

    Air Conditioner Service Manual Part Ⅰ Technical Information 1. Important Notice This service manual is intended for use by individuals possessing adequate backgrounds of electrical, electronic and mechanical experience. Any attempt to repair the appliance may result in personal injury and property damage.

  • Page 4: Specifications

    Air Conditioner Service Manual 2. Specifications 2.1 The relation curve of CAPACITY-TEMPERATURE 2700 110.0% 3400 105.0% 100.0% 3200 2600 105.0% 95.0% 3000 2500 100.0% 90.0% 2800 85.0% 2400 95.0% 2600 80.0% 2400 2300 90.0% 75.0% 35℃ 48℃ 35℃ 48℃ Capacity Rate Capacity Rate...

  • Page 5: The Relation Curve Of Noise-Compressure Operation Frequency

    Air Conditioner Service Manual 2.3 The relation curve of NOISE-COMPRESSURE OPERATION FREQUENCY Indoor unit 50.0 50.0 40.0 40.0 30.0 30.0 20.0 20.0 10.0 10.0 Muter Low speed Mid speed High speed super Muter Low speed Mid speed High speed super speed speed Indoor cooling noise...

  • Page 6: The Production Dimensions

    Air Conditioner Service Manual 3. Product Dimensions Indoor Unit: Outdoor Unit: Indoor unit Outdoor unit Model RCI-AN22HN 256.2 RCI-AN28HN 256.2 RCI-AN35HN 256.2...

  • Page 7: Refrigeration Cycle Diagram

    Air Conditioner Service Manual 4. Refrigeration cycle diagram Heat pump RCI-AN28HN, RCI-AN35HN Check valve Liquid side 2-way valve Capillary Heat exchange Heat exchange (Condenser) (Evaporator) Gas side 3-way valve 4-way valve Muffler Muffler Heating Cooling Compressor...

  • Page 8: Electric Diagram

    Air Conditioner Service Manual 5. Electric Diagram 5.1 Wiring diagram MODEL: RCI-AN22HN, RCI-AN28HN INDOOR UNIT： OUTDOOR UNIT...
  • Page 9 Air Conditioner Service Manual MODEL: RCI-AN35HN INDOOR UNIT： OUTDOOR UNIT...

  • Page 10: Pcb Laout

    Air Conditioner Service Manual 5.3 PCB LAOUT Indoor PCB RCI- AN28HN, RCI-AN35HN Transformer IN ODU AC power output Transformer OUT Fuse ODU AC power input AC fan motor driving IDU/ODU wiring connection --N connector Power supply --N connector Anion connector IDU/ODU communication wiring Left-Right swing connector Up-Down swing connector...
  • Page 11 Air Conditioner Service Manual...
  • Page 12 Air Conditioner Service Manual Outdoor unit RCI-AN28HN, RCI-AN35HN ODU PCB Mainly relay Fuse L, N & 1 (communication) wiring 4-way valve Heater DC fan motor connector Electronic expansion valve Discharge sensor connector OAT/OPT sensor connector LED5...
  • Page 13 Air Conditioner Service Manual Note: OAT: Outdoor Ambient Temperature OPT: Outdoor pipe temperatu...

  • Page 14: Electronic Controller Introduction

    Air Conditioner Service Manual Electronic Controller Introduction 6.1 Electronic controller RT ------ Room Temperature. IPT ----- Indoor Pipe (Coil) Temperature. ST ----- Indoor Setting Temperature. OPT -- Outdoor Pipe Temperature. OAT -- Outdoor Ambient Temperature. ODT -- Outdoor Discharge Temperature. CRT -- Compensated Room Temperature.
  • Page 15 Air Conditioner Service Manual delay for the motor should be less than 160s. 2). When switch on unit on cooling mode, ODU fan motor will delay 5s after compressor starts up. 4. When ODU failure or stops for protection, IDU works as preset. Anti-frosting protection Control the unit operation frequency and the frequency changing rate to achieve anti-frosting protection.
  • Page 16 Air Conditioner Service Manual 4). The compressor will also stop working while unit: a. switched off. b. under protection. c. changed to fan mode. 5). Under normal operation, the compressor can be stopped by program only working after 7 min once it starts up. 6).
  • Page 17 Air Conditioner Service Manual 6. Defrost Note: t1: compressor continuous works time. t2: AC unit operation first time going to defrost circle. t3: compressor accumulated working time (when OPT≤3℃ unit starts to count the time for t3). When AC unit working to: a.
  • Page 18 Air Conditioner Service Manual • Fan mode 1. The temperature setting: 16~31℃, Fan speed and vane position: as preset. The function for remote controller 58E only. 2. For above function, when unit preset to be auto fan mode, the fan motor will change its operation speed based on the temperature difference of ambient and preset temperature.
  • Page 19 Air Conditioner Service Manual Note: The function setting: Within 3 min while power on unit, set the unit on cooling mode, set temperature 30℃, and mid fan speed, press the ECO button 10 times within 8s, the AUTO-RESTART will be activated. •...
  • Page 20 Air Conditioner Service Manual unless press ON/OFF button. In the process of unit operation, once the compressor runs continuously more than 6 min, the counter of stop- working protection will be reset to zero and re-start a new counting process. Note: For different models, I and I have different programmed value.

  • Page 21: Wifi Introduction

    Air Conditioner Service Manual WIFI OPERATION MAUAL • The WIFI control logic CLOUD Internet controller Home wireless router TCL AC IDU WIFI module IDU PCB Remote controller • Download and installation Customer can scan the QR in the user manual or from appliance APP store to download the APP and install it in the cell phone, while installation achieved, there would be an icon as picture created on the desktop.

  • Page 22: Part Ⅱ Installation And Maintenance

    Air Conditioner Service Manual PART Ⅱ Installation and Maintenance 1. Notes for installation and maintenance Safety Precautions Important! Please read the safety of precautions carefully before installation and maintenance. The following contents are very important for installation and maintenance. Please follow the instructions bellow. ●...
  • Page 23 Air Conditioner Service Manual 5) Use equipped components or appointed components during installation. 6) Make sure no foreign objects are left in the unit after finishing installation. Improper installation may lead to fire hazard, explosion, electric shock or injury. Safety precautions for Installing and Relocating the unit. To ensure safety, please be mindful of the following precautions.
  • Page 24 Air Conditioner Service Manual Introduction R32, R290 air conditioner installation 1) Introduction to Refrigerants R32 & R290 The refrigerants used for air conditioners are environmentally friendly hydrocarbons R32 and R290. The two kinds of refrigerants are combustible and odorless. Moreover, they can burn and explode under certain condition.
  • Page 25 Air Conditioner Service Manual Caution: ⚫ Please contact the nearest after-sale service center when maintenance is necessary. At the time of maintenance, the maintenance personnel must strictly comply with the Operation Manual provided by the corresponding manufacturer and any non-professional is prohibited to maintain the air conditioner. ⚫...
  • Page 26 Air Conditioner Service Manual ⚫ It is necessary to choose the place where the inlet and outlet air of the indoor unit is even. ⚫ It is necessary to avoid the places where there are other electrical products, power switch plugs and sockets, kitchen cabinet, bed, sofa and other valuables right under the lines on two sides of the indoor unit.
  • Page 27 Air Conditioner Service Manual of the refrigerant leak detector should not exceed 25% of the lower explosion limit (LEL), the refrigerant leak detector must be working during maintenance. 2) Inspection of air conditioner ⚫ It is necessary to ensure that the air conditioner is in reliable ground connection before maintenance. ⚫...
  • Page 28 Air Conditioner Service Manual ⚫ It is necessary to provide firefighting devices such as dry powder or carbon dioxide fire extinguisher appropriate for extinguishing the electrical fire and keep such firefighting devices in a usable condition. ⚫ Temporary wires and sockets are prohibited on the maintenance location. 6).
  • Page 29 Air Conditioner Service Manual precautionary measures in work. For example, it is prohibited to enter the location with any kindling material and it is prohibited to wear clothing or shoes which easily produce static. Handling suggestions when a large amount of combustible refrigerant leaks: ⚫...

  • Page 30: Installation

    Air Conditioner Service Manual 2 Installation 2.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Space to the obstruction Space to the floor Space to the obstruction Drainage pipe Connecting wire 2.2 Accessory...
  • Page 31 Air Conditioner Service Manual Remote controller Remote Batteries Vinyl tape controller supporter Drain hose Hole cover Screw Insulation material...

  • Page 32: Position Of Idu/Odu

    Air Conditioner Service Manual 2.3 Position 1） Must follow the electric safety regulations when installing the unit. Indoor unit 2） According to the local safety regulations, use ⚫ Install the indoor unit level on a strong wall that is qualified power supply circuit and air switch. not subject to vibrations 3）...
  • Page 33 Air Conditioner Service Manual RCI-AN28HN (698X) The hole must slope downwards towards the exterior. Note: Keep the drain pipe down towards the direction of the wall hole, otherwise leakage may occur. 2.5.3 Electrical connections---Indoor unit 1).Lift the front panel. 2).Take off the cover as indicated in the picture (by removing a screw or by breaking the hooks).
  • Page 34 Air Conditioner Service Manual When extending the drain hose at the indoor unit, install the drain pipe. Wrap the insulation material around the Shape the connection pipe connecting portion. 2.5.4 Connecting the pipes. ⚫ Overlap the connection pipe insulation material ⚫...

  • Page 35: The Odu Installation

    Air Conditioner Service Manual twisted and do not put the end of it in water. If an Pay attention that water is drained in a suitable extension is connected to the drain hose, ensure place. that it is lagged when it passes into the indoor unit. 4).If the piping is installed to the right, the pipes, power cable and drain hose must be lagged and secured onto the rear of the unit with a pipe connection.

  • Page 36: Vacuum And Gas Leakage Test

    Air Conditioner Service Manual 2.7 Vacuum and gas leakage test 2.8 Final test 1. Use vacuum Pump 1 Preparation of test operation. ⚫ The client approves the air conditioner 1) Air and humidity left inside the refrigerant circuit can cause compressor malfunction. After having connected installation.

  • Page 37: Maintenance

    Air Conditioner Service Manual 3. Maintenance 3.1 Failure code Code Reason Remark IDU & ODU Communication failure The IDU & ODU wiring connection correct? IDU Room Temperature sensor failure.（IDU IDU sensor and PCB. RT failure） IDU Coil temperature sensor failure.（IDU IPT IDU sensor and PCB.
  • Page 38 Air Conditioner Service Manual PFC PROTECTION Please check the troubleshooting for detail. The Compressor lack of phase / Anti-phase Please check the troubleshooting for detail. PROTECTION. IPM Module temperature PROTECTION Please check the troubleshooting for detail. 4-Way Value reversing abnormal.. Please check the troubleshooting for detail.

  • Page 39: Trouble Shooting

    Air Conditioner Service Manual 3.2 Trouble shooting 3.2.1 E0 ---IDU & ODU communication failure Start Display E0 IDU wiring Check and re- E0 disappear? connection correct ? connect Check communication, Replace/ re- E0 disappear? earth wiring and the connect connection, in good condition? ODU wiring Check and re-...
  • Page 40 Air Conditioner Service Manual 3.2.2 E1, E2 ---IDU Room temperature sensor and/or coil temperature sensor failure. Start Display E1or E2 Is the sensor well Re-connect connected to PCB E1/E2 disappear? Multi-meter check the Replace the sensor sensor, is it open or short circuit? The malfunction eliminated?
  • Page 41 Air Conditioner Service Manual 3.2.3 E4 --- AC Cooling system abnormal (Gas not enough) Start Display E4 Check the pressure AC pressure correct? Check the sensor short or (cooling:0.8-1.3Mpa,/ open? heating 2.0-3.6Mpa) Replace the sensor Check the valves open or Replace the main PCB Open the valves Lower than 0.8 Mpa in...
  • Page 42 Air Conditioner Service Manual 3.2.4 E6 --- IDU ventilation failure (PG and DC fan motor only) Start Display E6 Turn the fan blades by hand while power-off Adjust the motor and blade Can the fan blades run assembly so that rotor can smoothly? run smoothly.
  • Page 43 Air Conditioner Service Manual 3.2.5 E3, E7 or E8 --- ODU Coil temperature sensor, Ambient temperature sensor or Discharge temperature sensor failure. When any of the sensor resistance open or short circuit , unit will display failure code as E3/E7 or E8, IDU and ODU turns off.
  • Page 44 Air Conditioner Service Manual 3.2.6 E9---ODU IPM /Compressor drive fault If unit have 6 times stopping works for IPM protection (P0) continuously, it will display E9 error, and unit can’t be recovered to operation, except press ON/OFF button. Display E9 Display F9 or FA first Replace ODU PCB then E9...
  • Page 45 Air Conditioner Service Manual 3.2.7 EF---ODU DC fan motor failure Shut off Check the fan blade by Re install the DC motor hand, can it rotate freely Works normal? Fan motor well Re-connect connect to PCB Works normal? 1. For built-in control (5pins) motor: check the V =310V? =15V?
  • Page 46 Air Conditioner Service Manual 3.2.8 EU---ODU voltage test sensor failure After power relay works, when tested voltage effective value less than 50V for 3s continuously, unit will display EU. Start Display EU Test voltage btw ODU Check while voltage terminal L/N, more than become normal 50V~? Unit works?
  • Page 47 Air Conditioner Service Manual 3.2.9 P0---IPM protection When overheat or overcurrent for IPM, AC unit will display P0protection. Display P0 Restart unit. It works normal? Wiring connection Re-connect U/V/W correct? P0 disappear? ODU fan motor no Replace ODU Can compressor works or too slowly? fan motor start up?
  • Page 48 Air Conditioner Service Manual 3.2.10 P1--- Over / under voltage protection 1. Test voltage between L &N, When the power supply V＞AC260V or V＜AC150V, AC will display P1 protection, unit will recover back to previous status while V＞AC155V. 2. Test voltage on the big size electrolytic capacitor of ODU PCB, When DC busbar voltage V＞DC420V or V ＜DC150V, unit will recover back to previous status while DC190V＜V＜DC410V Display P1 Wait until the AC...
  • Page 49 Air Conditioner Service Manual 3.2.11 P2---Over Current protection When the AC unit running current more than I , it will stop and display P2 protection. Note: for different AC model, I has difference valve. Display P2 ODU fan motor Replace fan motor works? P2 disappear? IDU filter or ODU...
  • Page 50 Air Conditioner Service Manual 3.2.12 P4 ---ODU Discharge temperature overheating protection Display P4 ODU temperature Normal protection higher than 60℃? ODU location Adjust ODU Enough space for Unit operate? acceptable? installation ventilation? Condenser too Clean IDU filter or P4 disappear? dirty? or filter ODU condenser.
  • Page 51 Air Conditioner Service Manual 3.2.13 P5---Sub-cooling protection on Cooling/Dry mode On Cooling or Dry mode, when IDU evaporator coil temperature IPT＜1℃ continuously for 3 min after compressor start up for 6 min, CPU will switch off outdoor unit and show P5 failure code. Display P5 Switch on unit after minutes...
  • Page 52 Air Conditioner Service Manual 3.2.14 P6---Overheating protection on Cooling mode On Cooling or Dry mode, when ODU condenser coil temperature OPT≥62℃ , MCU will switch off outdoor unit and show P6 failure code. Display ODU fan motor Replace fan motor Fan motor works normal? broken?
  • Page 53 Air Conditioner Service Manual 3.2.15 P7---Overheating protection on Cooling mode On heating mode, when IDU evaporator coil temperature IPT≥62 ℃ , ODU PCB will switch off outdoor unit and show P7 failure code. Display P7 ODU fan motor Fan motor Replace fan motor works normal? broken?
  • Page 54 Air Conditioner Service Manual 3.2.16 P8---Outdoor Overtemperature/Under-temperature protection When environment temperature as below condition, the compressor will stop working, after 200s delay, the IDU will show P8 failure code. (1). On Cooling or Dry mode: ODU ambient temperature: OAT＜-20℃ or OAT＞63℃; (2).
  • Page 55 Air Conditioner Service Manual When compressor start up or in the process of operation, if: (1). MCU can’t test the feedback signal from compressor, or (2). Tested a abnormal signal from compressor, or (3). The compressor startup abnormal. The outdoor unit will shut off, and show P9 protection. (The unit will re-startup 6 times continuously, if it still can’t work normal, then show P9 code) Display P9 Check the compressor...
  • Page 56 Air Conditioner Service Manual 3.2.18 F4---Cooling system Gas flow abnormal protection When compressor startup, unit will check the variation of IDU coil temperature. If there is mistake installer forgetting to open the 2-way or 3-way valve on ODU, the gas can’t flow in the cooling system, it will show F4 protection. Start Display F4 Check the 2-way...
  • Page 57 Air Conditioner Service Manual 3.2.19 F5---PFC Protection PFC Overcurrent protection F5 Code Check the power supply, Display F5 by is it abnormal? (this is random? normal protection) Display F5 frequently Switch off the unit for 3 Still F5? minutes and re-switch on Still F5? Replace ODU PCB...
  • Page 58 Air Conditioner Service Manual 3.2.20 F6 The Compressor Lack of phase / Anti-phase protection. If ODU PCB can’t test one, or even three phase of compressor current, it will show F6 protection. Display F6 Check compressor Re-connect wiring connector, is it well connected? Problem solved? The Compressor...
  • Page 59 Air Conditioner Service Manual 3.2.21 F7---Module temperature protection. IPM overtemperature protection, when IPM temperature more than 95℃, it will show F7. Display F7 Clean or adjust the gap IPM well contact Any dust or gap btw btw IPM and heat sink to heat sink? IPM &...
  • Page 60 Air Conditioner Service Manual 3.2.22 F8 - 4-Way Value Reversing abnormal On heating mode, if IDU Coil temperature tested lower than Room temperature 5℃ or even more after compressor works for 8min, unit will show F8 code. Display F8 the 4-way valve Re-connect wiring connection correct?
  • Page 61 Air Conditioner Service Manual 9.2.23 Fy--- Gas leakage protection After compressor works in high frequency for 9 min, if the temperature on IDU evaporator & ODU condenser has only a little variation comparing previous, but, the compressor discharge temperature on high level, then the unit will show Fy failure code.

  • Page 62: Exploded View

    Air Conditioner Service Manual 4. Exploded view and parts list Indoor Unit- RCI-AN22HN/IN, RCI-AN28HN/IN 11 12 Q’ty Part No. Part Name Remark 41106-002092 Front Panel 31102-000085 Display PCB 42003-000001 Display PCB Box 42008-000070 Air Filter 41108-000066 Screw Cover 41105-000146 Electrical Box Cover...
  • Page 63 Air Conditioner Service Manual Outdoor Unit- RCI-AN22HN/OUT, RCI-AN28HN/OUT Q’ty Part No. Part Name Remark 41202-000412 Base 41208-000226 Partition plate 92014-000778 Compressor and accessories 92007-010886 4-way valve assembly 92008-000245 4-way valve 31201-002266 Outdoor PCB Assembly 42001-000036 Cable clamp 210902377 Terminal 41205-000212 Right plate 41204-000018 Valve supporter...
  • Page 64 Air Conditioner Service Manual Indoor Unit- RCI-AN35HN/IN 14 15 Q’ty Part No. Part Name Remark 41106-002048 Front Panel 31102-000085 Display PCB 42003-000001 Display PCB Box 42008-000037 Air Filter 41108-000066 Screw Cover 41201-000068 Electrical Box Cover 41106-002371 Face Frame 41103-000101 Vane 41101-000081 Vertical Vane Assembly 22001-000313...
  • Page 65 Air Conditioner Service Manual Outdoor Unit- RCI-AN35HN/OUT Q’ty Part No. Part Name Remark 41202-000412 Base 41208-000226 Partition plate 92014-000760 Compressor and accessories 92007-009638 4-way valve assembly 92008-000245 4-way valve 31201-002239 Outdoor PCB Assembly 42001-000036 Cable clamp 210902377 Terminal 41205-000212 Right plate 41204-000018 Valve supporter 92007-001041...

  • Page 66: Disassembly Idu & Odu

    Air Conditioner Service Manual Outdoor Unit- 5. Disassembly IDU & ODU 5.1. IDU Disassembly Steps Reference photo 1. Before disassembly The orginal status. 显示盒 2. Disassembly front panel, display board and WIFI module. Display box A. Open front panel. B. Remove one screw and take the displ box out from the panel.
  • Page 67 Air Conditioner Service Manual Unlock the louver lockers (clip), bend the louver slightly by hands and remove it out from middle frame and stepping motor. Louver Louver locker Unlock the locker...
  • Page 68 Air Conditioner Service Manual 4. Remove the electric control box cover Unfix one screw on the cover of electric 固 box, and remove the cover. 定 螺 screw 钉 5. Remove the filter Push the filter upwards a little, you can take it out from unit.
  • Page 69 Air Conditioner Service Manual 7. Disassembly the electric control box. 电控盒 Electric control box A. Remove the RT & IPT out from evaporator; B. Unscrew all the earth ground wirings on the evaporator. C. Take all the connectors out from PCB. D.
  • Page 70 Air Conditioner Service Manual 9. Disassembly the evaporator screws Screws + motor 螺钉/卡扣 螺钉 A. Unfix 2 screws of left side shown as cover picture. B. Unfix 2 screws of right side on motor cover/right support plate. C. Take the evaporator out from unit by uplifting the IUPUT/OUTPUT pipes slightly.
  • Page 71 Air Conditioner Service Manual 5.2 ODU Assembly Step Reference picture step1：Remove the PCB Cover , valve Cover and top cover 1). Unfix one screw on the PCB cover, you can take the cover out from unit. 2). Unfix one screw on the valve cover, you can take it out easily.
  • Page 72 Air Conditioner Service Manual ODU middle separate plate and base plate, uplift front panel you can take it out from unit. step3：Disassemble the Left and Right plate. Unfix screws btw Right Plate and the Electric Box assembly, Valve Plate , Base Plate, then you can take the Right plate out.
  • Page 73 Air Conditioner Service Manual step4：Disassemble the Axis Fan Blade Unscrew the fan blade nut, and take the blade out. step5：Disassemble the electric box Unfix screw btw Electric Box and motor supporter etc. loosen the wiring clamp, then you can take the control box out.
  • Page 74 Air Conditioner Service Manual step7：Disassemble the separate plate Unfix the screw btw separate plate and unit, and take it out step8：Disassemble the 2 and 3-way valve Unfix screw btw Valve plate and base, you can take the 2-way and 3-way valve out by welding.
  • Page 75 Air Conditioner Service Manual step10：Disassemble the compressor. Unscrew the nuts and take the compressor out. step11：Remove the fan motor and fan supporter. Unfix screws btw fan motor with supporter, and supporter with base plate. Note: Pay attention to the motor wiring, it can’t be taken out by force.

  • Page 76: Appendix

    Air Conditioner Service Manual APPENDIX Appendix 1 The comparison table of Celsius-Fahrenheit temperature Fahrenheit Fahrenheit Fahrenheit Celsius Celsius Celsius diplay Fahrenheit diplay Fahrenheit diplay Fahrenheit ℃ ℃ ℃ temperature temperature temperature (℉) (℉) (℉) (℉) (℉) (℉) 60.8 69/70 69.8 78/79 78.8 62/63...
  • Page 77 Air Conditioner Service Manual Appendix 3 Pipes Flaring Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. A. Cut the pipes and the cable. 1) Use the piping kit accessory or the pipes purchased locally.

  • Page 78: Pipe Flaring

    Air Conditioner Service Manual Appendix 4 THERMISTOR TEMPERATURE CHARACTERISTICS 1). Indoor unit and outdoor exchange temperature and outside air temperature sensor temperature characteristics TEMP. TEMP. TEMP. Resistance Voltage of Resistance Voltage of Resistance Voltage of ℃ ℃ ℃ (k Ohm) resistance (k Ohm) resistance...
  • Page 79 Air Conditioner Service Manual TH1: indoor room temperature sensor and outside air temperature sensor TH2: indoor exchange temperature sensor and outside exchange temperature sensor Before measuring resistance, disconnect connectors as shown above. Outdoor unit sensor temperature characteristics TEMP. TEMP. TEMP. R min R(t) R max...
  • Page 80 Air Conditioner Service Manual 63.74 70.48 77.87 6.309 6.655 7.013 1.073 1.12 1.168 60.69 67.05 6.08 6.409 6.748 1.042 1.089 1.136 57.81 63.8 70.34 5.861 6.173 6.495 1.013 1.058 1.104 55.08 60.72 66.88 5.651 5.947 6.253 0.9833 1.028 1.074 52.49 57.81 63.61 5.449...

This manual is also suitable for:

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