Ideal Air IAH24MD-D3DNA3D Service Manual

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This product is precharged with
refrigrant for a 25 feet of line set.
If MORE than 25 feet of line set is required, refer to your
Ideal-Air Service Manual for refrigrant charing chart.
For line sets between 25' & 10' in length, REMOVE .65 oz
of R410A refrigerant per line feed.
According to manufacturer's specifications, under no
circumstances should the line set be shorter than
10' in length.
If you need further assistance, please contact:
Ideal-Air Tech Support
877-943-3251
support@ideal-air.com
Service Manual
Model: IAH24MD-D3DNA3D (700476)
IAC24MD-D3DNA3D (700480)
(Refrigerant R410A)
IdealAir • National Garden Wholesale, Sunlight Supply Inc. • Vancouver, WA. USA

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Summary of Contents for Ideal Air IAH24MD-D3DNA3D

  • Page 1 10’ in length. If you need further assistance, please contact: Ideal-Air Tech Support 877-943-3251 support@ideal-air.com Service Manual Model: IAH24MD-D3DNA3D (700476) IAC24MD-D3DNA3D (700480) (Refrigerant R410A) IdealAir • National Garden Wholesale, Sunlight Supply Inc. • Vancouver, WA. USA...
  • Page 2: Table Of Contents

    Service Manual Table of Contents Part : Technical Information ................. 1 1. Summary ........................1 ......................3 ......................3 ..................9 ............9 ............. 10 ........................10 3. Outline Dimension Diagram .................11 3.1 Indoor Unit.........................11 ........................12 4. Refrigerant System Diagram ..............
  • Page 3 Service Manual 9. Maintenance ......................... 44 ..................44 9.2 Error Code List ........................45 ................. 56 ................68 10. Exploded View and Parts List ..............70 10.1 Indoor Unit......................... 70 ........................73 11. Removal Procedure .................... 78 ..................78 ................. 83 Appendix: ..........................88 ............
  • Page 4: Part : Technical Information

    Service Manual Part : Technical Information 1. Summary Indoor Unit: IAC24MD-D3DNA3D/I IAH24MD-D3DNA3D/I Outdoor Unit: IAC24MD-D3DNA3D IAH24MD-D3DNA3D Remote Controller: IARC-24 ON/OFF MODE CLOCK TIMER ON X-FAN TEMP TIMER OFF TURBO SLEEP LIGHT...
  • Page 5 Service Manual Model List...
  • Page 6 Service Manual IAC24MD-D3DNA3D Model Part Number 700480 Rated Voltage 208/230 Power Cooling Capacity(Min Max) 21400(9600~25000) Heating Capacity(Min Max) Max) 1780(500~2650) Max) 7.941 2650 11.757 589/471/412/353 5.28 SEER Application Area 27-42 IAC24MD-D3DNA3D/I Indoor Unit Model Cooling Speed(S/H/M/L) 1500/1200/1050/900 Heating Speed(S/H/M/L) r/min r/min 0.24 Indoor Unit...
  • Page 7 Service Manual IAC24MD-D3DNA3D MITSUBISHI ELECTRIC (GUANGZHOU)COMPRESSOR CO. Compressor Model Compressor Oil Compressor Type Rotary Compressor LRA. 18.5 Compressor RLA 1420 1NT11L-6578 109.4 Range Range Condenser Pipe Diameter 2-1/18 2354 Climate Type Isolation IP24 PSIG PSIG dB (A) 58/-/- dB (A) 68/-/- 119.1 132.3...
  • Page 8 Service Manual IAH24MD-D3DNA3D Model 700476 Part Number Rated Voltage 208/230 Power Cooling Capacity(Min Max) 21400(9600~25000) Heating Capacity(Min Max) 23000(4300~26000) Max) 1780(500~2650) Max) 2100(400~2750) 2750 11.80 589/471/412/353 5.28 12.00 10.95 SEER Application Area 27-42 IAH24MD-D3DNA3D/I Indoor Unit Model Cooling Speed(S/H/M/L) 1500/1200/1050/900...
  • Page 9 Service Manual IAH24MD-D3DNA3D MITSUBISHI ELECTRIC (GUANGZHOU)COMPRESSOR CO. LTD Compressor Model Compressor Oil Compressor Type Rotary Compressor LRA. 18.50 Compressor RLA 4.90 1420 1NT11L-6578 Range 5~75 Range Condenser Pipe Diameter 2-1/18 0.482 2354 Climate Type Isolation IP24 PSIG PSIG dB (A)
  • Page 10: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V 220V Indoor DB 80˚F/WB 67˚F Outdoor : DB 95˚F/WB75˚F Turbo 230V 230V 240V Indoor : DB 70˚F/WB 60˚F 240V Outdoor : DB 47˚F/WB 43˚F Turbo 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature...
  • Page 11: Noise Curve

    Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling condition connecting indoor Compressor (DB/WB) Model of indoor Indoor P (MPa) 80/67 95/75 0.9 to 1.1 50 to 53.6 181.4 to 113 Heating: Compressor connecting indoor (DB/WB) Model of indoor...
  • Page 12: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 39.7 5.47 26.97 7.26 2.76 2.76 Unit:inch 2.56 3.54...
  • Page 13 Service Manual 3.2 Outdoor Unit 14.6 16.8 38.6 Unit:inch...
  • Page 14: Refrigerant System Diagram

    Service Manual STOP 4. Refrigerant System Diagram This product is precharged with refrigrant for a 25 feet of line set. If MORE than 25 feet of line set is required, refer to your Cooling only model Ideal-Air Service Manual for refrigrant charing chart. For line sets between 25’...
  • Page 15: Electrical Part

    Service Manual 5. Electrical Part 5.1 Wiring Diagram Symbol Symbol Color Symbol Symbol Color Symbol Name Green Yellow Brown COMP Compressor YEGN Yellow/Green Violet Orange GWC24MD-D3DNA3D/I GWH24MD-D3DNA3D/I...
  • Page 16 Service Manual IAH24MD-D3DNA3D/I POWER IAC24MD-D3DNA3D OVERLOAD PROTECTOR WARNING Please don't touch any terminal when COMP. the voltage of terminal P(DC+) and YEGN COMP N(DC-) at AP1 is higher than 30V to prevent the risk of electrical shock! MAGNETIC RING COMP-U...
  • Page 17 Service Manual IAH24MD-D3DNA3D OVERLOAD PROTECTOR WARNING Please don't touch any terminal when COMP. the voltage of terminal P(DC+) and YEGN COMP N(DC-) at AP1 is higher than 30V to MAGNETIC prevent the risk of electrical shock! RING COMP-U COMP-V COMP-W...
  • Page 18: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit IAC24MD-D3DNA3D/I IAH24MD-D3DNA3D/I Top view DC fan interface Up and down swing terminal interface Display terminal interface Ambient temp. sensor interface Bottom view...
  • Page 19 Service Manual Outdoor Unit Top view Compressor wiring connection terminal middle copper pipe temp. sensor terminal protection terminal ODU temp. sensor terminal terminal wiring terminal wire Bottom view...
  • Page 20: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller IARC-24 ON/OFF Button MODE Button +/- Button FAN Button Button CLOCK Button TIMER ON/TIMER-OFF Button X-FAN Button TEMP Button TURBO Button LIGHT Button SLEEP Button Introduction for Icons on Display Screen Operation mode Set fan speed Operation mode...
  • Page 21 Service Manual Note: 3. “+” or“-” Button 4. FAN Button Auto Note: Button no display (horizontal louvers stops at current position) position. Note: 6. CLOCK Button Note: 7. TIMER-ON/TIMER-OFF Button...
  • Page 22 Service Manual Note: 8. X-FAN Button Note: 9. TEMP Button no display Note: 10. TURBO Button 11. SLEEP Button 12. LIGHT Button Function Introduction for Combination Buttons Child lock function: Temperature display switchover function:...
  • Page 23 Service Manual Operation Guide Replacement of Batteries in Remote Controller Note: Signal sender Battery Reinstall Cover of Remove battery box batteries.
  • Page 24: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions beep. (2) Display Dual-8 nixie tube display Receiver Operation icon Cooling icon window Heating icon Drying icon Display (Display content or position may be different from above graphics, please refer to actual products) Tamb.
  • Page 25 Service Manual Start cooling Tamb. Tpreset -32.9˚F Original operating status Tpreset –35.6 ˚F Stop cooling 7 min. 3 min. 7 min. Graphic instruction: (Same as below) Compressor Indicates operation Outdoor fan motor Indicates stop Indoor fan motor Set fan speed (3) Dry Mode Dry conditions and process Tamb.
  • Page 26 Service Manual Tamb. Stop heating preset+41 F Original operating status +38.3 F preset Start heating 7 min. 3 min. 7 min. Compressor Outdoor unit Intdoor unit Set fan speed min. Set fan speed min. Reversing valve Defrost conditions and process seconds.
  • Page 27 Service Manual Emergency Press OFF status ON status(Auto mode) operation switch Press (6) Indoor fan speed control...
  • Page 28 Service Manual . (Note: If complete (11) (12)
  • Page 29 Service Manual 5 Main system protection (more details please refer to maintenance section) Tindoor pipe 42.8 42.8 129.2 206.6 188.6...
  • Page 30 Service Manual (10)
  • Page 31: Part : Installation And Maintenance

    Service Manual Part : 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.
  • Page 32 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.
  • Page 33: Installation

    Service Manual 8. Installation STOP 8.1 Installation Dimension Diagram This product is precharged with refrigrant for a 25 feet of line set. If MORE than 25 feet of line set is required, refer to your Ideal-Air Service Manual for refrigrant charing chart. For line sets between 25’...
  • Page 34: Installation Procedures

    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...
  • Page 35: Selection Of Installation Location

    Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement 1. Safety precaution Name Name Wrapping tape Connection pipe Drainage pipe frame Connecting conditioner. cable(power cord) remote controller Wall pipe Air-conditioner Note: 8.3 Selection of Installation Location 1. Basic Requirement: 2. Grounding requirement: 2.
  • Page 36 Service Manual 5. Connect the Pipe of Indoor Unit 3. Install Wall-mounting Frame Wall Wall Mark in the middle of it Level meter Space Space to the to the Open-end wall wall wrench above above Union nut Pipe Pipe joint Union nut Left Right...
  • Page 37 Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe Panel Screw Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Drain hose connection wire sleeve Drain hose Connection pipe Band Indoor power cord Note: Wring Cover winding.
  • Page 38: Installation Of Outdoor Unit

    Service Manual 8.6 Installation of Outdoor Unit 1. Fix the support of outdoor unit(select it according to the Outside diameter Tightening .torque actual installation situation) inch Φ0.24 15~20 Φ0.37 30~40 expansion screws. Φ0.47 45~55 Note: Φ0.63 60~65 Φ0.75 70~75 5. Connect Outdoor Electric Wire GWC24MD-D3DNA3D/O GWH24MD-D3DNA2B/O GWH24MD-D3DNA3D/O...
  • Page 39: Check After Installation And Test Operation

    Service Manual Note: 2. Leakage detection 8.8 Check after Installation and Test The drain hose can't be fluctuant Operation 1. Check after Installation The water outlet can't be placed The drain hose in water can't be fluctuant The water installation. outlet can't be fluctuant emit noise.
  • Page 40: Maintenance

    Service Manual 9. Maintenance 9.1 Precautions before Maintenance electrolytic capacitor after power off. electric box maintenance safely. Installation and Maintenance...
  • Page 41: Error Code List

    Service Manual 9.2 Error Code List Unit Name Display 0.5s) 8 nixie Operation Cool Heat D40/ D41/ D42/ D43/ Indicator Indicator Indicator cooling and drying Rotation speed 2. Replace indoor compressor of indoor fan is replace indoor fan twice protection indoor fan operates.
  • Page 42 Service Manual and drying compressor and 3 protection 5 times fan operates. loads stop. 3. Replace main board and drying compressor and See 9.3 Refer to (diagnosis of 6 times maintenance fan operates. loads stop. and drying compressor and 9.3(diagnosis Refer to 8 times maintenance...
  • Page 43 Service Manual Connection terminal between indoor ambient sensor and main stop operation board is loose or poor connection. cooling Indoor and drying ambient Refer to compressor once maintenance Indoor ambient sensor is sensor is damaged (Please resistance table sensor) operation. Main board is damaged.
  • Page 44 Service Manual terminal of PG Control terminal compressor of PG motor and electric is not inserted Refer to 8 protection of 11 times maintenance motor. position. main board. inserted on main board. Operation of remote controller or Refer to inserted correctly 9 protection of 15 times control panel...
  • Page 45 Service Manual and drying compressor and 11 condenser 4 times fan operates. 1. After de- sensor 1.T-SENSOR reinsert been inserted loads stop. T-SENSOR 2. Hardware 2. Replace and drying main board compressor and 5 times fan operates. sensor loads stop. All loads Limit/ operates...
  • Page 46 Service Manual All loads operates Refrigerant is not Decrease 2. Add refrigerant 3. Replace 9 times operation electronic of electronic compressor decreases. L and N on wiring normal range and and drying compressor 11 times indoor fan operates. A and B ends of electrolytic loads stop.
  • Page 47 Service Manual See 9.3 and drying (diagnosis of compressor and Refer to 18 protection of 15 times maintenance fan operates. protection of compressor) loads stop. 19 Defrosting 1:Wiring terminal OVC- COMP is loose 1. After de- (Under normal insert OVC- and drying COMP terminal compressor and...
  • Page 48 Service Manual and drying compressor and See 9.3 Refer to 6 times maintenance protection) fan operates. loads stop. See 9.3 and drying (diagnosis of compressor and Refer to 7 times maintenance of compressor fan operates. protection of compressor) loads stop. and drying compressor and See 9.3...
  • Page 49 Service Manual between indoor and drying compressor and 26 of read 15 times Hardware 2. Replace indoor EEPROM fan operates. Hardware 3. Replace loads stop. and drying See 9.3 compressor and (diagnosis Refer to 17 times maintenance of capacitor fan operates. capacitor) loads stop.
  • Page 50 Service Manual and drying Drop compressor and 20 times fan operates. loads stop. and drying positions L and N on wiring board compressor and 150 VAC 31 protection of 21 times Hardware fan operates. 2. Replace loads stop. system is de- energized for 20min and Radiating grease...
  • Page 51 Service Manual and drying compressor and Hardware 1. Replace Zero-crossing main board fan operates. loads stop. All loads Limit/ operates decrease close normally operation speed of fan is too low protection compressor decreases. replace indoor DC fan motor fan motor 36 fan motor to compressor stop operation...
  • Page 52: Troubleshooting For Main Malfunction

    Service Manual 9.3 Troubleshooting for Main Malfunction 1. Malfunction of Temperature Sensor F1, F2 Main detection points: 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...
  • Page 53 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: interface terminal 1 and 2 within interface terminal 2 and 3 is 15VDC Installation and Maintenance...
  • Page 54 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: 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...
  • Page 55 Service Manual 4. Malfunction of Overcurrent Protection E5 Main detection points: Troubleshooting for E5 malfunction Is the supply voltage unstable Normal fluctuation is within 10 % of the rated Malfunction is with big fluctuation? voltage on the nameplate eliminated Is the supply voltage too low Malfunction is Malfunction is Adjust the supply voltage to maintain it within...
  • Page 56 Service Manual 5.Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: Turn on the unit and wait 1 minute Use AC voltmeter to measure the voltage on the two ends of electrolytic capacitor (see fig 30) Malfunction of Replace outdoor...
  • Page 57 Service Manual 6.IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: H5, H7 or P5 is displayed after turning on the unit Measure if the voltage The unit starts Repair power supply to make input is within 180~265V Restart the unit...
  • Page 58 Service Manual 7.High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: E8 is displayed Normal protection, please If the outdoor Unit restarts use it after improving the ambient temperature is higher normally outdoor ambient temperature than 53℃? Improve the radiating environment If the radiating of indoor...
  • Page 59 Service Manual 8.Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: Turn on the unit The stop time is not sufficient and If the stop time of compressor the high and low pressure of system is more than 3min? is not balanced , please start the unit after 3min...
  • Page 60 Service Manual 9.Overload and high discharge temperature malfunction Main detection points: Installation and Maintenance...
  • Page 61 Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be<1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
  • Page 62 Service Manual 10.PFC (correction for power factor) malfunction (outdoor unit malfunction) Main detection points: start If power plug is connected Is the malfunction Connect the plug correctly well with the socket eliminated? Check the connection wire between reactor mainboard and situation of connection Reconnect the wire or Power on and If there is short circuit or the...
  • Page 63 Service Manual 11.Communication malfunction (E6) Main detection points: If the unit operates normally before malfunction Check the connection wire according to the wiring diagram. Check built-in wiring If the connection wire of indoor and outdoor is connected well? unit Reconnect the wire or Replace the If the wiring is replace the connection...
  • Page 64: Troubleshooting For Normal Malfunction

    Service Manual 9.4 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up connected well. Wrong wire connection between or poor connection for wiring terminals reliably correctly once improper Replace batteries for remote controller Repair or replace remote controller 2.
  • Page 65 Service Manual 4. ODU fan Motor Can't Operate Connect wires according to wiring diagram to connection diagram damaged fan capacitor. is bad and ODU compressor generates a lot of 5. Compressor Can't Operate Connect wires according to wiring diagram to connection diagram Capacity of compressor is...
  • Page 66: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit IAC24MD-D3DNA3D/I IAH24MD-D3DNA3D/I FA N MODE I F EEL TIMER C LOC K X- FA N T EMP TIMER T URBO SLEEP LIGH T Installation and Maintenance...
  • Page 67 Service Manual Part Code Description IAC24MD-D3DNA3D/I Part Number 700480 20012328 11122091 24252016 2001232901 10512141 26112187 10512037 Rear Case Assy 2220211701 76712012 Ringof Bearing 26152025 7651205102 10352030 24212103 0100257204 01252032 Motor Press Plate 26112316 15012136 Connecting pipe clamp 26112188 0523001401 Stepping Motor 1521300101 10582070 Display Board...
  • Page 68 Service Manual Part Code Description IAH24MD-D3DNA3D/I Part Number 700476 20012328 11122091 24252016 2001232901 10512141 26112187 10512037 Rear Case Assy 2220211701 76712012 Ringof Bearing 26152025 7651205102 10352030 24212103 0100257204 01252032 Motor Press Plate 26112316 15012136 Connecting pipe clamp 26112188 0523001401 Stepping Motor...
  • Page 69 Service Manual 10.2 Outdoor Unit IAC24MD-D3DNA3D/O Installation and Maintenance...
  • Page 70 Service Manual Part Code Description IAC24MD-D3DNA3D Part Number 700480 01473050 1501403402 Capacitor CBB61 33010011 Radiator 49010252 Main Board 30138000152 Electric Box Assy 01403000056 Terminal Board 42010255 Left Handle 26235401 Left Side Plate 01305043P 01255006P 01705025 01175092 Clapboard Assy 01233154 Condenser Assy 01103000203 Rear Grill 01475013...
  • Page 71 Service Manual IAH24MD-D3DNA3D 31 30 Installation and Maintenance...
  • Page 72 Service Manual Part Code Description IAH24MD-D3DNA3D Part Number 700476 01473050 1501403402 Capacitor CBB61 33010011 Radiator 4901302801 Main Board 30138000153 Electric Box Assy 01403000086 Terminal Board 42010255 Left Handle 26233053 Left Side Plate 01305043P 01255006P 01705025 01175092 Clapboard Assy 01233154 Condenser Assy...
  • Page 73: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure 1. Remove filter panel Open the panel. Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
  • Page 74 Service Manual Steps Procedure 3. Remove horizontal louver Push out the axile bush on horizontal louver. Bend the horizontal louver with hand and then Horizontal louver separate the horizontal louver from the crankshaft of step motor to remove it. Location of step motor Axile bush 4.
  • Page 75 Service Manual Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical bottom louver and bottom case to remove vertical case louver. vertical louver clasps electric box 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.
  • Page 76 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 panel. screws display electric box Remove the screw fixing electric box assy and then remove the electric box assy.
  • Page 77 Service Manual Steps Procedure 9. Remove stepping motor Remove the screw fixing step motor and then remove the step motor. screws 10. Remove motor and cross flow blade motor clamp Remove the screws fixing motor clamp and then remove the motor clamp. cross flow screws Remove the screws at the connection place of...
  • Page 78: Removal Procedure Of Outdoor Unit

    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 1.Remove handle and valve cover Twist off the screws used for fixing the handle, pull handle the handle upward to remove it.Loosen the screws fixing the valve cover and then remove it.
  • Page 79 Service Manual Steps Procedure 4.Remove front side plate and front panel Remove screws connecting front side plate, outer case and chassis,and then remove the front side plate. front side plate front panel Remove screws fixing front panel,chassis and motor support, and then remove the front panel.
  • Page 80 Service Manual Steps Procedure 6.Remove axial flow blade Remove nut on blade with wrench,and then remove the axial flow blade. axial flow blade 7.Remove electric box and fireproof electric box electric box Remove screws fixing electric box,cut off the tielien with scissors, pull out the wiring terminal and then lift fire proof electric box up the electric box to remove it.
  • Page 81 Service Manual Steps Procedure Twist off the tapping screws fixing the motor support, pull it upwards and then remove the motor support. motor support 9.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
  • Page 82 Service Manual Steps Procedure 11.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve. (note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to avoid the damage to valve, and release all refrigerant completely at first).
  • Page 83: Appendix

    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 display display display 60.8 69/70 69.8 78/79 78.8 62/63 62.6 71/72 71.6 80/81 80.6 64/65 64.4 73/74 73.4 82/83 82.4 66/67...
  • Page 84: Appendix 3: Pipe Expanding M

    Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Note: Expander Pipe...
  • Page 85 Service Manual Appendix 4: List of Resistance for Ambient Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) 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 1.039 121.6 71.6 17.14...
  • Page 86 Service Manual Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(20K) 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 1.346 153.3 73.4 21.85 143.6 4.605 213.8...
  • Page 87 Service Manual Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(50K) Temp.( Temp.( Temp.( Temp.( -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36 195.8...
  • Page 89 Call our Toll Free number for top-rate technical support: 877-9-IDEAL-1 (877-943-3251) Outside the USA? Call +1-360-546-6161 Exclusively distributed by: www.sunlightsupply.com...

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