Service Manual Table of Contents Part Ⅰ : Technical Information ................. 1 1. Summary ........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................6 2.3 Capacity Variation Ratio According to Temperature ............6 2.4 Cooling and Heating Data Sheet in Rated Frequency ............
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Service Manual 9. Maintenance ......................... 32 9.1 Malfunction Analysis ......................32 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ........... 36 9.3 How to Check Simply the Main Part ..................43 10. Exploded View and Parts List ..............56 10.1 Indoor Unit .........................
(Hz) Indoor Outdoor T1 (°F) T2 (°F) P (MPa) 54 to 57 158 to 104 Super High High 80/67 95/75 ACZEM4H4R09/ACZCI4H4R09 0.9 to 1.1 ACZEM4C4R12/ACZCI4C4R12 54 to 57 158 to 104 Super High High 27/19 35/24 0.9 to 1.1 ACZEM4H4R12/ACZCI4H4R12...
Service Manual 4. Refrigerant System Diagram Cooling only type Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger Suction (evaporator) Accumlator Compressor Heat exchanger (condenser) Liquid pipe side Valve Capillary Strainer COOLING Cooling and heating type Outdoor unit Indoor unit Gas pipe...
Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
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Service Manual ● Outdoor Unit ACZCI4C4R12 ACZCI4H4R09 ACZCI4H4R12 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Live wire interface Fuse Neutral wire interface PG motor interface Communication port of neutral wire and live wire Auto button Up & down swing interface PG feedback interface Display interface Ambient temperature sensor Tube temperature...
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Service Manual Outdoor Unit ● Top view Compressor UVW three phases Reactor interface 2 Reactor interface 1 Fan interface 4-way valve interface Power supply neutral wire Power supply neutral wire Communication wire Overload input Temperature sensor interface ● Bottom view Technical Information...
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button T-ON T-OFF AUTO MODE button SWING COOL SLEEP LOCK SPEED HEAT +/- botton MODE ON/OFF FAN button SWING SWING button SLEEP TIMER SLEEP button TIMER button Icon Display on Remote Controller Timer on Timer off...
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Service Manual When selecting auto mode,air conditoner will operate automatically according to ambient temperature.Set temperature can't be When selecting auto mode, air conditioner will operate automatically according to ex-factory setting. Set temperature can't be adjusted and won't be displayed either.Press FAN button to adjust fan speed. adjusted and won't be displayed either.
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Service Manual Replacement of Batteries in Remote Controller battery 1. Press the back side of remote controller on the spot marked with , and then push out the cover of battery box along the arrow direction. 2. Replace two No.7 (AAA 1.5V) dry batteries and make sure the positions of + and -- polar are correct.
Service Manual 6.2 Brief Description of Modes and Functions (1) Cooling Mode ① Working conditions and process of cooling When Tamb.≥Tpreset, the unit will enter cooling operation, in which case the indoor fan, the outdoor fan and the compressor will work and the indoor fan will run at preset speed.
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High fan Medium Low fan Turbo Models Mode speed fan speed speed Cooling 1260 1100 ACZEM4H4R09 Heating 1320 1200 1100 ACZEM4C4R12 Cooling 1330 1100 ACZEM4H4R12 Heating 1350 1170...
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Service Manual e timer function is set in the last control before it is de-energized, the system last control and the setting time is reached before the unit is de-energized, the unit will run according to the previous running mode after it is energized again.
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when the frequency droops.For limiting lower limitFrequency management is carried out only when the frequency rises. 4.Upper and lower limit of frequency by PI controlThe frequency upper and lower limits are set depending on indoor unit.When low noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit, theupper limit Service Manual frequency must be lowered than the usual setting.
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If a “drooping current” is continues for 1.0 second after rushing on the drooping zone, the frequency will be 2 Hz drooping. Repeating the above drooping continues until the current rushes on the drooping zone without change. In the keep zone, the frequency limit will remain. Service Manual In the return / reset zone, the frequency limit will be cancelled.
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system is in heating operation, 6 minutes after the compressor is started and more than 44 minutes of accumulated time pass since the start of the operation or ending the defrosting. 2.Conditions for Canceling Defrost Service Manual The judgment must be made with heat exchanger temperature. (39°F~72°F) PI control Frequency 60sec.
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: 10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire Important! from the manufacture or distributor. Prohibit prolong the wire by yourself.
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Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 8/9 inch At least 5 8/9 inch Space to the obstruction Air inlet side 11 4/5 Above Space to the wall Space to the wall 19 2/3 Above Unit: inch...
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Service Manual Installation procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...
Connecting conditioner. cable(power cord) remote controller Air switch capacity Wall pipe Air-conditioner ACZEM4H4R09/ACZCI4H4R09 Note: 1.Please contact the local agent for installation. ACZEM4C4R12/ACZCI4C4R12 2.Don't use unqualified power cord. ACZEM4H4R12/ACZCI4H4R12 (4) Properly connect the live wire, neutral wire and grounding wire of power socket.
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Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
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Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) (2) Reserve a certain length of drain hose and power cord Panel...
Service Manual Refer to the following table for wrench moment of force: 8.6 Installation of Outdoor Unit 1. Fix the Support of Outdoor Unit(select it according to the Hex nut diameter(inch) Tightening torque(ft·Ibf) actual installation situation) Φ1/4 11.10~14.75 (1) Select installation location according to the house structure. Φ3/8 22.82~29.50 (2) Fix the support of outdoor unit on the selected location with...
Service Manual Note: 2. Leakage Detection (1) The through-wall height of drain hose shouldn't be higher (1) With leakage detector: than the outlet pipe hole of indoor unit.(As show in Fig.25) Check if there is leakage with leakage detector. (2) Slant the drain hose slightly downwards. The drain hose (2) With soap water: can't be curved, raised and fluctuant, etc.(As show in Fig.26) If leakage detector is not available, please use soap water for...
Service Manual 9. Maintenance 9.1 Malfunction Analysis Note: When replacing the controller, be sure to insert the wire jumper into the new controller, otherwise the unit will display C5 Measure insulation resistance The breaker trips at once when it to ground to see if there is any is set to “ON”.
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Service Manual Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper Check and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres-...
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Service Manual The indoor fan motor is burned or breaks or has the heat protector Replace the fan motor or the defective part. malfunction. The built-in heat protector of the Replace the fan motor The fan does not motor breaks frequently because the run when it is set motor is abnormal.
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Service Manual The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) C o n t r o l l e r m a l f u n c t i o n ( I C 2 0 0 3 Change controller...
Service Manual 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
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Service Manual Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Dual-8 Malfunction A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...
Service Manual 9.3 How to Check Simply the Main Part Confirm the malfunction type according to the malfunction indicator of indoor/outdoor unit and malfunction sheet (usually the sheet will be stuck on the electric box cover or top cover of the unit). As long as there is a malfunction, the indicator of the outdoor controller board will display the corresponding malfunction directly;...
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Service Manual 1.Malfunction of Temperature Sensor F1,F2 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright Is malfunction...
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Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated...
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Service Manual 3. Malfunction of Protection of Jumper Cap C5 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the...
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Service Manual 4. Communication malfunction E6 Start Cut off power, check if the wire between indoor unit and outdoor unit, and the wire inside electric box are connected correctly Reconnect the wire Malfunction is according to Connected correctly? eliminated wiring diagram Is there incorrect Match them match between the mainboard...
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Service Manual 5. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due U8 is still to instant energization afte de- displayed energization while the capacitor discharges slowly.
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Service Manual 6. IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (outdoor unit malfunction) Main detection point: ●If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? ●Is voltage input in the normal range (Test the voltage between L, N of wiring board XT by DC voltage meter)? ●If coil resistance of compressor is normal? Is compressor coil insulating to copper pipe well? ●If the work load of unit is heavy? If radiating of unit is well? If the refrigerant charging is appropriate? Malfunction diagnosis process:...
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Service Manual Energize and switch on Use AC voltmeter Check the supply to measure the If the voltage IPM protection voltage and voltage between between terminal L and N on wiring occurs after the machine has run for restore it to terminal L and N board XT is within a period of time?
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Service Manual 7. Diagnosis for high temperature, overload protection (check outdoor unit in cooling mode and check indoor unit in heating mode) Main detection point: ●If the outdoor ambient temperature is in normal range; ●If the indoor and outdoor fan is running normally; ●If the radiating environment inside and outside the unit is well (including if the fan speed is too low)? ●If the tube temperature sensor of indoor and outdoor unit is normal? Malfunction diagnosis process:...
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Service Manual 8. Diagnosis for failure start up malfunction (outdoor unit malfunction) Main detection point: ●If the compressor wiring is correct? ●If the stop time of compressor is enough? ●If the compressor is damaged? ●If the refrigerant charging is too much? Malfunction diagnosis process: Energize the unit and start it...
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Service Manual 9. Diagnosis for compressor synchronism (outdoor unit malfunction) Main detection point: ●If the system pressure is over-high? ●If the working voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after occurred during energize the unit operation and start it Check if the fan Replace fan If the stop time of...
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Service Manual 10. Diagnosis for overload and discharge malfunction (outdoor unit malfunction) Main detection point: ●If the electron expansion valve is connected well? Is the expansion valve damaged? ●If the refrigerant is leakage? ●If the overload protector is damaged? ●If the discharge temp sensor is damaged? Malfunction diagnosis process: After the u nit de-energized...
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Service Manual 11. Communication malfunction Main detection point: ●Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; ●If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start If the unit is operating...
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit Installation and Maintenance...
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Service Manual Part Code Description ACZEM4H4R09 Product Code CB162N08200_L14385 Front Panel Sub-Assy 20012558_L14385 Filter Sub-Assy 1112220403 Front Case Sub-assy 2001213931 Guide Louver 10512157 Axile Bush 10542036 Rear Grill 01472013 Air Louver 2 10512165 Helicoid Tongue 26112163C Left Axile Bush 10512037...
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Service Manual Part Code Description ACZEM4C4R12 ACZEM4H4R12 Product Code CB162N08700_L17107 CB162N08100_L14385 Front Panel Sub-Assy 20012830_L17107 20012830_L14385 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 2001213931 2001213931 Guide Louver 10512157 10512157 Axile Bush 10542036 10542036 Rear Grill 01472013 01472013 Air Louver 2 10512165 10512165 Helicoid Tongue...
Service Manual 10.2 Outdoor Unit ACZCI4C4R12 Installation and Maintenance...
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Service Manual Part Code Description ACZCI4C4R12 Product Code CB145W04500_L17107 Front Grill 01473051 Cabinet 0143304401P Axial Flow Fan Sub-Assy 1033300901 Fan Motor 1501307301 Chassis Sub-assy 02803265P Compressor Gasket 76710302 Compressor Overload Proctector(External) 00183032 Compressor and Fittings 00103896G Discharge Tube 03833586 Cut off Valve Assy 07133841 Cut off Valve Assy 07133960...
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Service Manual ACZCI4H4R09 ACZCI4H4R12 Installation and Maintenance...
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Service Manual Part Code Description ACZCI4H4R09 ACZCI4H4R12 Product Code CB145W04400_L14385 CB145W04600_L14385 Front Grill 01473051 01473051 Cabinet 0143304401P 0143304401P Axial Flow Fan Sub-Assy 1033300901 1033300901 Fan Motor 1501307301 1501307301 Left Side Plate 20053001 20053001 Motor Support 0170312201 01703122 Clapboard 01233088 01233088 Compressor and Fittings 00103896G 00103896G...
Service Manual 11. Removal Procedure 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Steps Procedure 1. Remove filter Open the panel. Panel Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
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Service Manual Procedure Steps 3. Remove panel Panel Open the front panel; separate the panel rotation shaft from the groove fixing the Front panel front panel and then removes the front panel. Note: The display of some models is fixed on Panel rotation the panel;...
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Service Manual Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical louver and bottom case to remove vertical louver. Bottom case Vertical louver Clasps 7. Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy.
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Service Manual Steps Procedure Remove two screws fixing display. Note: The display of some models is fixed on the panel; unscrew the screws fixing the display on the panel before removing the Display Screws panel. Screws Remove the screw fixing electric box assy and then remove the electric box assy.
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Service Manual Steps Procedure 9. Remove stepping motor Step motor Screws Remove the screw fixing step motor and then remove the step motor. 10. Remove motor and cross flow blade Remove the screws fixing motor clamp and then remove the motor clamp. Motor clamp Cross flow Remove the screws at the connection...
Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. Steps Procedure Points 1. Remove the handle The stop valve cover has 6 hooks.
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Service Manual Steps Procedure Points 3.Remove grille and front panel Loosen one screw and remove the discharge grille. Grille Lift the front panel and remove it while pushing Loosen the 5 screws of the right side panel inwards. the front panel. Front panel.
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Service Manual Steps Procedure Points M4×16 Remove the 4 tapping screws fixing the motor. DC fan motor Fan motor fixing frane Pull out the lead-out wire and remove the motor. Remove the 2 tapping screws fixing the motor support. Lift to remove the motor support.
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Service Manual Steps Procedure Points 8.Remove the sound blanket Since the piping ports on Lift and remove the the sound blanket are sound blanket (top). torn easily, remove the blanket carefully. Untie the strings and open the sound blanket. Lift and remove the sound blanket (body) as it is opened.
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Service Manual Steps Procedure Points 10.Remove compressor Solder off the welding spot of capillary and valve and outlet pipe of condenser. Remove the 2 screws fixing the gas valve. Solder off the weld spot connecting gas valve and air return pipe and remove the gas valve.
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit Fahrenheit Fahrenheit Fahrenheit display display display Celsius (℃) Celsius (℃) Celsius (℃) temperature temperature temperature (℉)...
Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please Pipe cutter expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...
Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor (15K) Resistance(kΩ) F) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2...
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Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) F) Resistance(kΩ) F) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346...
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