Haier GE Connect Series Service Manual Download Page 68

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CONNECT SERIES SERVICE MANUAL

ENGLISH

Maintenance

Electronic Expansion Valve Removal

Note: Recover all refrigerant and isolate power before removing the electronic expansion valve.

Step

Picture

Work instruction

7. Check and open the upper

and front panels.

Check whether each component and

connection wire is well connected.

If everything is OK, install the upper,

left and right panels. Tighten up the

screws.

Model: AUH4860ZGDA

Front Panel Removal

Note: Be sure power is isolated before removing front panel.

Step

Picture

Work instruction

1. Remove the upper cover

plate.

Unscrew the screws of the upper cover

plate with a screwdriver.

2. Remove the front plate.

Unscrew the screws of the front plate with

a screwdriver.

Summary of Contents for GE Connect Series

Page 1: ...Connect Series Split Heat Pumps Service Manual 31 5000483 Rev 1 05 20 GEA Split Type Heat Pump Installation Instructions READ CAREFULLY KEEP THESE INSTRUCTIONS Rev 08 21 ...

Page 2: ...fore installing this heat pump Before repairing the air conditioner please first read the technical service manual Safety Notifications 1 Introduction 3 Lists of Units 3 Specifications 4 Controls 6 Operation Modes 6 Control Modes 8 Functions 9 Troubleshooting 14 Wiring Diagrams 14 PCB Layout 18 Indoor Unit LED Indicators 27 Outdoor Unit Error Codes 27 Troubleshooting 28 Failures Not Caused by Erro...

Page 3: ...ant circuit Check the location to see if the weight can be properly supported before installing the unit Please test the system for leaks prior to charging Leaks discovered after the unit start up require refrigerant pump down leak repair and recharging Do not allow refrigerant to leak into unventilated spaces Prepare suitable tools and protectors Please isolate all power to the system while makin...

Page 4: ...place all wires that have worn or damaged insulation This equipment must have a dedicated electrical circuit and service disconnect switch Maintain a regular schedule for presentative maintenance Do not remove the fan cover while the unit is running Use soap and water only to clean the unit Do not use any solvents to clean the control panel Isolate all power to the system before cleaning the unit ...

Page 5: ... Power Supply Fuse Capacity Circuit Breaker Capacity Appearance V Ph Hz A A UUY24ZGDAA 24000 24000 208 230V 1Ph 60Hz 3 5 15 UUY36ZGDAA 36000 36000 208 230V 1Ph 60Hz 3 5 15 UUY48ZGDAA 48000 48000 208 230V 1Ph 60Hz 3 5 15 UUY60ZGDAA 54000 54000 208 230V 1Ph 60Hz 3 5 15 UUY24ZGDAB 24000 24000 208 230V 1Ph 60Hz 3 15 15 UUY36ZGDAB 36000 36000 208 230V 1Ph 60Hz 3 15 15 UUY48ZGDAB 48000 48000 208 230V 1P...

Page 6: ...ndoor Sound Level dB 49 49 50 51 Metering Device TXV TXV Power Supply 208 230V 1Ph 60Hz 208 230V 1Ph 60Hz Breaker Size A 15 15 Maximum Static Pressure W C 05 0 6 Dimension H x W x D in mm 48 1 4 x 21 1 4 x 21 1 4 1226 x 540 x 540 57 x 24 3 4 x 21 1 4 1448 x 630 540 Carton Dimension H x W x D in mm 50 1 2 x 26 x 23 3 4 1283 x 660 x 603 59 3 8 x 27 1 4 x 26 1508 x 693 660 Weight Net Gross lbs kg 156...

Page 7: ...ce TXV TXV Power Supply 208 230V 1Ph 60Hz 208 230V 1Ph 60Hz Breaker Size A 15 15 Maximum Static Pressure W C 1 0 1 0 Dimension H x W x D in mm 48 1 4 x 21 1 4 x 21 1 4 1226 x 540 x 540 57 x 24 3 4 x 21 1 4 1448 x 630 540 Carton Dimension H x W x D in mm 50 1 2 x 26 x 23 3 4 1283 x 660 x 603 59 3 8 x 27 1 4 x 26 1508 x 693 660 Weight Net Gross lbs kg 156 5 169 8 71 77 202 8 218 3 92 99 Control Cont...

Page 8: ...ing start control Indoor fan run Satisfying open Compressor condition Meet the oil return condition Oil return separation Meet the oil return end condition Meet the temperature point shutdown condition Compressor and outdoor fan stop Compressor stop for 3 minutes Compressor and outdoor fan run No No No Yes ...

Page 9: ...r condition Meet the oil return condition Oil return separation Meet the oil return end condition Meet the defrost condition Meet the defrost condition Meet the defrost end condition Meet the temperature point shutdown condition Compressor and outdoor fan stop Compressor stop for 3 minutes Compressor and outdoor fan run No No No Yes Yes Yes No Yes ...

Page 10: ...zed during cooling and defrost modes The 4 way valve will continue to be energized in heating mode after the unit stops This occurs so the valve will not inadvertently shift into cooling position There must be adequate differential pressure for the 4 way valve to function properly Special Control Defrosting Control Defrosting will start when the temperature sensed by outdoor tube outdoor coil temp...

Page 11: ...e sensor is detected open for a predetermined amount of time The system will shut down and display error code E4 during high temperature protection The system will restore operation when the discharge temperature drops below the safety threshold The system will lock out if high discharge temperature is sensed again during a certain time period and power must be reset to the unit Functions Capacity...

Page 12: ...tdoor DIP SA2 3 SA2 4 Standard Mode default Strong Mode Energy Saving Mode On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Indicates switch position UUY24ZGDAA UUY36ZGDAA HEAT Indoor DIP SA2 COOL Indoor DIP SA1 HEAT Indoor DIP SA2 COOL Indoor DIP SA1 Level 1 default On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 2 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 3 ...

Page 13: ... Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 3 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 5 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 6 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 7 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 On Off 1 2 3 4 Level 8 On Off 1 ...

Page 14: ...evel 6 2010 1870 1750 1615 1500 1380 Level 7 2080 2000 1880 1750 1600 1420 Level 8 2040 1980 1930 1800 1700 1550 UUY60ZGDAB Level 1 1660 1540 1470 1400 Level 2 1850 1720 1650 1600 1400 Level 3 1800 1730 1650 1480 1315 Level 4 1950 1860 1760 1640 1490 1325 Level 5 2140 2040 1930 1800 1670 1520 1370 Level 6 2090 2010 1910 1760 1650 1550 1430 1380 Level 7 2115 2050 1990 1920 1840 1750 1660 Level 8 20...

Page 15: ... menu will time out if no function is performed within 10 seconds Forced Operation Press and hold SW1 for about 5 seconds to enter the first level menu The outdoor unit main board LED display flashes Under the first level menu short press SW1 to switch various functions After switching to 09 short press SW2 or SW3 to enter the forced operation control mode 01 denotes forced cooling mode 02 indicat...

Page 16: ...IES SERVICE MANUAL 14 ENGLISH Troubleshooting Wiring Diagrams The following electric diagram is for reference only Please refer to diagram attached to the unit as the latest version Outdoor Units Model AUH2436ZGDA ...

Page 17: ...CONNECT SERIES SERVICE MANUAL 15 ENGLISH Troubleshooting Model AUH4860ZGDA ...

Page 18: ... MANUAL 16 ENGLISH Troubleshooting Model UUY48ZGDAA UUY60ZGDAA Indoor Units Model UUY24ZGDAA UUY36ZGDAA The following electric diagram is for reference only Please refer to diagram attached to the unit as the latest version ...

Page 19: ...CONNECT SERIES SERVICE MANUAL 17 ENGLISH Troubleshooting Model UUY48ZGDAB UUY60ZGDAB Model UUY24ZGDAB UUY36ZGDAB ...

Page 20: ...otor check 2 AC L X1 Live wire input 9 X14 OFAN H OUT AC motor high speed output 3 CN3 Wired control communication interface 10 X11 OFAN H IN AC motor high speed input 4 CN1 DC motor output 11 X8 OFAN L IN AC motor low speed input 5 X7 Transformer Neutral wire input 12 X6 OFAN L OUT AC motor low speed output 6 X13 Transformer Live wire input 13 X3 C Transformer Neutral wire output 7 X10 O_SCAN 4 W...

Page 21: ...CONNECT SERIES SERVICE MANUAL 19 ENGLISH Troubleshooting No Printing Interface No Printing Interface 1 DC MOTOR1 DC motor output 2 COM2 DC motor control signal input Motor Board 18 ...

Page 22: ...ire input 7 X3 C Transformer Neutral wire output 2 AC L X1 Live wire input 8 CN7 1 Electrical heat check 3 Defrosting check 3 CN4 Wired control communication interface 9 X9 G_SCAN Indoor motor check 4 TUBE Tube temperature sensor interface 10 X10 O_SCAN 4 Way check 5 CN5 DC motor output 11 X13 Transformer Live wire input 6 X4 R Transformer Live wire output 12 X7 Transformer Neutral wire input ...

Page 23: ...14 T_SENSOR2 2 Outdoor tube temperature sensor interface 4 Outdoor ambient temperature sensor interface 6 Discharge temperature sensor interface 5 4WAY 4 way valve 15 T_LAC Low temperature cooling temperature sensing 6 VA Electromagnetic valve interface 16 COM7 Unit communication interface 7 FA Electronic expansion valve interface 17 CN6 GPRS communication interface 8 FA1 Electronic expansion valv...

Page 24: ...e wire 11 L1 2 PFC induction wire white 3 L1 1 PFC induction wire brown 12 L2 1 PFC induction wire yellow 4 N Neutral wire 13 G OUT Reserved 5 COMM1 Communication terminal same with COMM 14 U Compressor U phase terminal 6 COMM Communication terminal same with COMM1 15 V Compressor V phase terminal 7 PWR Drive power supply terminal 16 W Compressor W phase terminal 8 DC MOTOR1 DC fan terminal 17 JTA...

Page 25: ...FC induction wire white 2 AC L Live wire 9 U Compressor U phase terminal 3 L1 1 PFC induction wire brown 10 V Compressor V phase terminal 4 N Neutral wire 11 W Compressor W phase terminal 5 JTAG1 Programming interface for testing 12 PWR Drive power supply terminal 6 COMM Communication terminal same with COMM 13 DC BUS Power discharge terminal for testing 7 L2 1 PFC induction wire yellow ...

Page 26: ...t live wire terminal 4 E1 Filtering board grounding hole reserved 9 L OUT Power output live wire terminal 5 DC BUS Power discharge terminal for testing 1 1 2 2 3 3 4 4 5 5 6 6 7 7 7 6 3 4 2 1 5 9 8 1 1 2 2 3 3 4 4 5 5 6 6 7 7 7 6 3 4 2 1 5 9 8 No Printing Interface No Printing Interface 1 AC L Power input live wire terminal 5 N OUT Power output neutral wire terminal reserved 2 AC N Power input neu...

Page 27: ...ood IPM board is indicated by reading 0 3 to 0 7 volts between UP VP WP NU NV and NW 4 A bad board is indicated by a zero reading in any of the measurements Method of Testing PFC Module Short Circuit Turn off power to the outdoor unit and wait at least one minute Set a multi meter to diode test Remove wires from L1 2 and L2 1 Testing Steps 1 Place the black lead on terminal P and the read lead on ...

Page 28: ...CONNECT SERIES SERVICE MANUAL 26 ENGLISH Troubleshooting AUH4860ZGDAA ...

Page 29: ...Charge loop error 25 ee Drive memory chip error 26 e1 High pressure sensor error 27 C4 ODU jumper cap error Outdoor Unit Error Codes LED indicator Color Function Power Indicator Red Indoor unit main board is powered on Power Indicator is on Running Indicator Green After detecting the indoor fan turn on signal the running indicator light is on when detecting the indoor fan turning off signal the ru...

Page 30: ...switch is correct Check if the high pressure switch works normally Yes E1 Compressor High Pressure Protection Error display ODU main board LED display Error judgment condition and method It is judged through the action of high pressure switch If the high pressure switch is cut off it is judged that high pressure is too high and the system stops operation for protection Possible causes Cut off valv...

Page 31: ...ccurs Yes E3 Compressor Low Pressure Protection Refrigerant Undercharge Protection Refrigerant Recovery Mode Error display ODU main board LED display Error judgment condition and method It is judged through the action of low pressure switch If the low pressure switch is cut off it is judged that low pressure is too low and the system stops operation for protection Possible causes Service valve of ...

Page 32: ...ted temperature value is higher than 239 F the unit will stop for protection Possible causes Service valve of ODU is not fully opened Electronic expansion valve is abnormal Outdoor or indoor fan is not working properly IDU filter or air duct is blocked cooling mode Ambient temperature exceeds allowable operation range System is under charged Refrigerant lines are blocked E4 Compressor air discharg...

Page 33: ...Poor contact between ambient temperature sensor and terminal in main board interface Ambient temperature sensor is abnormal Detecting circuit is abnormal No No Yes Yes Yes Yes No No Replace the temperature sensor Inspect if the detecting circuit is abnormal Start Start Malfunction of outdoor coil temperature sensor F3 Outdoor ambient temperature sensor error Check if the condenser temperature sens...

Page 34: ...ly report the error Possible causes Poor contact between temperature sensor and terminal in main board interface Temperature sensor is abnormal Detecting circuit is abnormal No No Yes Yes Yes Yes No No Replace the temperature sensor Replace the temperature sensor Start Start Malfunction of discharge temperature sensor Malfunction of tube temperature sensor Check if the discharge temperature sensor...

Page 35: ...sing pressure is higher than the protection value system will report overload protection Possible causes Cooling ODU heat exchanger is blocked or heat exchange is bad Heating IDU heat exchanger is blocked or heat exchange is bad Operating temperature is too high System is over charged Start Malfunction of ODU memory chip error Replace the outdoor main board Yes No Start H4 Overload Outdoor coil is...

Page 36: ...n board does not receive the outdoor fan signal within 30 seconds after outdoor fan run call is initiated Possible causes Outdoor fan wiring terminal is not correctly connected to the main board Outdoor fan is damaged Outdoor fan software is incorrect This can occur after the outdoor fan has been replaced Yes No Start H5 IPM protection Compressor 3 phase wire connection is phase reversed or has op...

Page 37: ... different that the speed called for Either case will stop compressor operation Possible causes Compressor 3 phase wire connection is out of phase or phase reversed Compressor wiring is out of phase System is blocked short of refrigerant or compressor oil Drive board IPM module is damaged Drive board compressor current sampling circuit element is damaged or drive chip current sampling AD terminal ...

Page 38: ...hat the chip resets again In this case it can be judged as drive chip reset protection Possible causes 3 3V drive chip supply voltage drop TRST lead of JTAG programming is interrupted No No No Yes Yes Yes Yes Yes Yes No No Start Start LC Startup failure P0 Driver reset protection System is blocked 3 3V drive board voltage is normal or not Eliminate system failure Re arrange the wires Heavy current...

Page 39: ...etween master control and driver is faulted System will shut down for protection Possible causes Communication wire between master control and driver is not well connected or has bad contact or is broken The switch power of drive board is abnormal therefore the 3 3V power voltage is abnormal Communication circuit of the drive board or the master control board is abnormal No Yes Yes Yes Yes No No S...

Page 40: ...mperature or PFC module temperature exceeds the set protection value then it can be judged that driver module temperature is too high and system will shut down for protection Possible causes Thermal grease is not applied or not evenly applied to the module or there is other substance on the back of the module The module securing screws are not tight Drive board temperature sampling circuit element...

Page 41: ...le causes Current detection or current sensor sampling circuit element is abnormal Drive chip compressor current sampling AD terminal is badly welded or short circuited Start PC Current detection or current sensor circuit error Replace the drive board No Yes Yes No Start PA AC current protection Grid voltage is normal or not Compressor is running at high frequency and high load Normal protection N...

Page 42: ...on Possible causes Voltage of power grid is abnormal Voltage is too low Drive board charge loop element is abnormal Drive board busbar voltage sampling circuit element is damaged or drive chip busbar voltage sampling AD terminal is abnormal ee Drive Memory Chip Error Error display ODU main board LED display Error judgment condition and method If power is connected but the drive board and the memor...

Page 43: ...heck if the high pressure sensor on main board is inserted on the socket correctly Measure the pressure sensor if its AD value is normal Replace the outdoor main board Correctly insert the pressure sensor on the socket Yes Yes Yes C4 ODU Jumper Cap Error Error display ODU main board LED display Error judgment condition and method If jumper cap model doesn t match with main board report the error P...

Page 44: ...apor The heat pump is buzzing at the beginning of operation Thermostat will be buzzing when it starts working The noise will become weak 1 min later Dust comes from the heat pump When the unit is turned on it purrs When the system is just started the refrigerant is not stable About 30s later the purr of the unit will dissipate About 20s after the unit first enables the heating mode or there is ref...

Page 45: ... in case of refrigerant leak 3 Connect the hose used for evacuation to the vacuum pump 4 Open the switch at the lower pressure side of the manifold valve assembly and start the vacuum pump Meanwhile the valve at the high pressure side of the manifold valve assembly should be kept closed otherwise evacuation would fail 5 The evacuation duration depends on the unit s capacity generally Verify if the...

Page 46: ...appropriate storage tank System should use oxygen free nitrogen purging to ensure safety This process may need to repeat several times Do not use compressed air or oxygen in this process Refrigerant Charging Pre Charging 1 Connect the high pressure gauge line to the liquid service valve and connect the low pressure gauge line to the vapor line valve Connect the middle gauge line to the vacuum pump...

Page 47: ...stem 6 Add the required amount of refrigerant calculated and close off the manifold gauge when complete 7 If you can t continue to charge refrigerant into the system and the quantity of charged refrigerant is less than the required charging quantity then restart the system and add the remainder of the required refrigerant into the vapor line while the system is running 8 After charging remove the ...

Page 48: ...by compare their operating noises 3 Examine whether the electronic expansion valve of the outdoor unit is active and whether the 4 way valve works or not How to examine I Electronic Expansion Valve The electronic expansion valve will be reset every time when the unit is powered on or off Touch the valve and you can feel the movement of the valve spool In the last stage of the reset process you wil...

Page 49: ...e Please refer to the IPM checking method in the section of troubleshooting Check the drive board of compressor i e the IPM module Please refer to the IPM checking method in the section of troubleshooting D Connect to the exhaust side Caution High temperature Diagnosis of Compressor Failure On Condition that the Unit CANNOT be Started Up 1 Cut off the power supply and detach the cover of the wirin...

Page 50: ...valuate how much oxygen and acetylene should be used according to the current welding condition Try to avoid repeated welding Prepare a complete set of tools including an internal hexagonal wrench diagonal pliers pincer pliers nipper pliers a multimeter a pressure gauge phillips screwdriver straight screwdriver more than two wrenches insulating tape and wire ties 2 Disconnect power If the compress...

Page 51: ...ere is impurity and discoloration Sniff at the compressor lubricant Normally there is no pungent smell II If the oil is contaminated replace the compressor and the gas liquid separator Note Confirm whether the compressor needs to be replaced The refrigerant ports of the faulted compressor must be sealed by adhesive tape as soon as the compressor is detached Make sure the compressor is well preserv...

Page 52: ...high pressure nitrogen into the system for leak detection If it is only the outdoor unit that needs to be repaired and the indoor unit is confirmed normal then it s OK to charge high pressure nitrogen into the outdoor unit only Fill with nitrogen simultaneously from the high pressure side and low pressure side We recommend charging the nitrogen from the both service valves at the same time Nitroge...

Page 53: ...board of the compressor Set the multimeter for DC voltage and measure the voltage between P and N as shown below If the voltage is below 36V proceed with the next step 3 Remove all the wires on the drive board of the compressor 4 Remove the screws on the drive board of the compressor The screws are located in the white circles as shown above in the picture 5 Replace with a new compressor drive boa...

Page 54: ...e fan It enables the fan to run so as to provide air to flow across the coil and transfer heat from the coil to the air Fan It is used to provide smooth currents of air for forced convection and heat exchange of condenser and evaporator Gas liquid separator Installed at the suction side of compressor it can separate the liquefied refrigerant from the gaseous refrigerant to make sure that only gase...

Page 55: ...artial heat of the hot flow to the cold flow so that the flow temperature can reach the specified index It is an energy exchanging device Electronic expansion valve It is used to lower the pressure and temperature of liquefied refrigerant and adjust the flow of refrigerant entering the coil Solenoid Valve Electromagnetic valve controls increased enthalpy switch ...

Page 56: ...cover plate Unscrew the screws of the upper cover plate with a screwdriver 2 Remove the front side plate Unscrew the screws of the upper and front side plate with a screwdriver 3 Remove the front grill Unscrew the screws of the front grill with a screwdriver 4 Remove the front panel Unscrew the screws that connect the front panel to the middle insulating board and screws around the front panel ...

Page 57: ... the electric box and the screws around the right side plate 6 Install the right side plate Screw up the screws around the right side plate Be careful to handle well the clasps at the bottom of the right side plate 7 Install the front panel Install the front panel by mounting on 6 clasps on its both sides Please note that there is one screw on the lower right side 8 Install the grill Attach the gr...

Page 58: ...val Note Be sure power is off before removing front panel Step Picture Work instruction 9 Install the front side plate Fix the clasps on both sides of the plate and tighten up the screws 10 Install the upper cover plate Tighten up the screws around the upper cover plate ...

Page 59: ...isconnection 2 Break off the pipes that connecting to the compressor gas liquid separator Braze the pipes that are connected to the compressor gas liquid separator Then remove the pipes Note When welding the pipes do not let the flame burn the other components 3 Loosen the compressor s base connectors gas liquid separator s base nuts Use a wrench to twist off the compressor gas liquid separator s ...

Page 60: ...acing the compressor gas liquid separator tighten up the base screw nuts 6 Connect the brazing interfaces of compressor gas liquid separator to the pipeline Braze the connection pipes of compressor to connect them to the compressor Note When replacing the compressor avoid touching the nearby pipeline and components 7 Connect the compressor wires Connect the compressor wires to the wire terminals o...

Page 61: ...rch to loosen the 4 joints on the 4 way valve and then remove the connection pipes Note When brazing the pipes the 4 way valve should be wrapped with wet cloth for cooling Do not let the flame burn the other components 3 Replace the 4 way valve and connect it to the connection pipes Replace the 4 way valve and then use a torch to braze the 4 joints of the 4 way valve Note When brazing the pipes th...

Page 62: ...nscrew the two screws on the upper left and lower right corners 2 Remove the fan Use a wrench to remove the specialized nut and gasket of the fan Note Please keep the nut and gasket safe after removing them from the fan 3 Remove motor Use a screwdriver to unscrew the bolt of motor Note Motor wire should be first removed from the electric box 4 Install the motor Replace with a new motor Then tighte...

Page 63: ...Fan and Motor Removal Note Be sure to isolate power before removing the fan Step Picture Work instruction 5 Install the fan Install the fan in place Put on the gasket and use a wrench to secure the screw nut Note After installing the fan turn the fan by hand to see if it can run normally If not please check for the reason 6 Install the grill After replacing the motor use a screwdriver to tighten u...

Page 64: ...ide and outside the electric box should be removed 3 Remove motor support When removing the motor support be careful to protect the components 4 Remove the outdoor coil Heat the brazed joint with a torch until the pipes separate Note When brazing the pipes do not let the flame burn the other components The brazing points of the outdoor coil are steel and copper brazed points Be sure to maintain th...

Page 65: ...he positions of entering and leaving pipes Braze the connection pipes Nitrogen welding the pressure of nitrogen is 2 to 3 W C Note When brazing the pipes do not let the flame burn the other components 7 Secure the electric box and arrange the wires according to the requirement Put the electric box in place and tighten up the screws of electric box Arrange and secure the wires as original 8 Check a...

Page 66: ...ic box Unscrew the screws of electric box The connection wires inside and outside the electric box should be removed When removing the electric box be careful to protect the components 2 Remove the fixed block Remove the fixed block between the electronic expansion valve and the pipe 3 Remove the electronic expansion valve Take off the coil of electronic expansion valve Loosen the connection pipe ...

Page 67: ...the new electronic expansion valve Braze the connection pipe of electronic expansion valve When brazing the electronic expansion valve the valve should be wrapped with wet cloth Nitrogen brazing the pressure of nitrogen is 2 to 3 W C Note When brazing the pipes do not let the flame burn the other components Install the coil of electronic expansion valve 6 Secure the electric box and arrange the wi...

Page 68: ...ls Check whether each component and connection wire is well connected If everything is OK install the upper left and right panels Tighten up the screws Model AUH4860ZGDA Front Panel Removal Note Be sure power is isolated before removing front panel Step Picture Work instruction 1 Remove the upper cover plate Unscrew the screws of the upper cover plate with a screwdriver 2 Remove the front plate Un...

Page 69: ...s of the front grill with a screwdriver 4 Remove the front panel Unscrew the screws that connect the front panel to the middle insulating board and screws around the front panel 5 Install the front panel Install the front panel by mounting on 6 clasps on its both sides Please note that there is one screw on the lower right side 6 Install the grill Attach the grill back in place and tighten up the ...

Page 70: ...he valve cover with a screwdriver 8 Remove the right side plate Unscrew the screws that connect the right side plate to the electric box and the screws around the right side plate 9 Install the right side plate Screw up the screws around the right side plate Be careful to handle well the clasps at the bottom of the right side plate 10 Install the grill Attach the grill back in place and tighten up...

Page 71: ...pressor Disassembly Note Be sure the refrigerant is recovered and power is isolated before removing the compressor Step Picture Work instruction 1 Remove wires Loosen the securing screws of the wires with a screwdriver Remove the wires Note When removing the wires mark the wire terminals corresponding to their color so as to avoid misconnection 2 Loosen the securing screws at the foot of compresso...

Page 72: ...pressor Braze the pipes that are connected to the compressor Then remove the pipes Note When brazing the pipes do not let the flame burn the other components 4 Remove the compressor from the chassis Take out the compressor and replace it Note When replacing the compressor avoid touching the nearby pipeline and components 5 Fix the new compressor back onto the chassis After replacing the compressor...

Page 73: ...nnect the pipes to the suction and discharge ports Braze the compressor connection pipes and connect them to the compressor Note When replacing the compressor avoid touching the nearby pipeline and components 7 Connect the compressor Connect the compressor wires to the wire terminals on the top of compressor Note When connecting the wires be sure to match the colors with the corresponding wire ter...

Page 74: ...the connection pipes from the 4 way valve Use a torch to loosen the 4 joints on the 4 way valve and then remove the connection pipes Note When brazing the pipes the 4 way valve should be wrapped with wet cloth for cooling Do not let the flame burn the other components 3 Replace the 4 way valve and connect it to the connection pipes Replace the 4 way valve and then use a torch to braze the 4 joints...

Page 75: ...e removing the 4 way valve Step Picture Work instruction 4 Install the coil of 4 way valve Tighten the screws of the coil of 4 way valve with a screwdriver Fan and Motor Removal Note Be sure to isolate power before removing the fan Step Picture Work instruction 1 Remove the grill Use a screwdriver to unscrew the two screws on the upper left and lower right corners ...

Page 76: ...on 2 Remove the fan Use a wrench to remove the specialized nut and gasket of the fan Note Please keep the nut and gasket safe after removing them from the fan 3 Remove motor Use a screwdriver to unscrew the bolt of motor Note Motor wire should be first removed from the electric box 4 Install the motor Replace with a new motor Then tighten up the screw bolt ...

Page 77: ...he fan Install the fan in place Put on the gasket and use a wrench to secure the screw nut Note After installing the fan turn the fan by hand to see if it can run normally If not please check for the reason 6 Install the grill After replacing the motor use a screwdriver to tighten up the screw bolt that secures the motor Arrange the wires according to the wiring diagram ...

Page 78: ...move the upper lower and front panels Loosen the wire clamp at the bottom of the electric box Unscrew the screws of electric box 2 Remove the electric box The connection wires inside and outside the electric box should be removed When removing the electric box be careful to protect the components 3 Remove the compressor gas liquid separator from the chassis Remove the compressor gas liquid separat...

Page 79: ...tering and leaving pipes Braze the two joints Nitrogen welding the pressure of nitrogen is 2 to 3 W C Note When brazing the pipes do not let the flame burn the other components Tighten the screws of gas liquid separator 5 Secure the electric box and Put the electric box back in place and tighten up the screws Arrange the wires as original 6 Check and open the upper and side panels Check whether ea...

Page 80: ... and front panels Loosen the wire clamp at the bottom of the electric box Unscrew the screws of electric box 2 Remove the electric box The connection wires inside and outside the electric box should be removed When removing the electric box be careful to protect the components 3 Remove the electronic expansion valve Take off the coil of electronic expansion valve Loosen the connection pipe of elec...

Page 81: ... new electronic expansion valve Braze the connection pipe of electronic expansion valve When brazing the electronic expansion valve the valve should be wrapped with wet cloth Nitrogen welding the pressure of nitrogen is 2 to 3 W C Note When brazing the pipes do not let the flame burn the other components Install the coil of electronic expansion valve 6 Secure the electric box and arrange the wires...

Page 82: ... panels Tighten up the screws Removal of IDU Major Components Air handler Unit Electric Box Disassembly and Assembly Note Be sure power is isolated and refrigerant is recovered before removing the Electronic Expansion Valve Step Picture Work instruction 1 Remove the upper panel Loosen screws around the upper panel with a screwdriver Remove the upper panel away from the unit 2 Remove the electric b...

Page 83: ...osen screws around the electric element with a screwdriver Remove the electric element from the electric box 4 Mount the new electric element Place the electric element at the proper position Tighten the screws around the electric element with a screwdriver Wire the electric element to the wiring terminal 5 Reinstall the electric box Place the electric box at the proper position Tighten screws aro...

Page 84: ...l and draw them out Loosen screws located at the front of the fan with a screwdriver Remove the fan from the unit 3 Remove the motor Disconnect the wires of the fan from the wiring terminal and draw them out Loosen screws located at the front of the fan with a screwdriver Remove the fan from the unit 4 Reinstall the fan Place the motor at the proper position Tighten screws fixing the motor and fan...

Page 85: ...upper panel from unit 2 Remove the lower panel 1 and panel 2 Loosen screws round the lower panel with a screwdriver Remove the lower panel from unit 3 Remove the enhanced frame if applicable Remove the screws from enhanced frame Disassemble the enhanced frame from the unit 4 Remove the mounting plate of the drain pan Loosen screws at both side of the mounting plate with a screwdriver Remove the mo...

Page 86: ... and Assembly Step Picture Work instruction 5 Remove the primary drain pan Remove the primary drain pan from the unit 6 Remove the secondary drain pan Remove the secondary drain pan from the unit 7 Remove the coil Remove the coil away from the primary drain pan Reassemble the unit as before ...

Page 87: ...mbly Step Picture Work instruction 1 Remove the mounting plate Loosen screws fixing the mounting plate Remove the mounting plate away from the unit 2 Remove the filter screen Remove the filter screen away from the unit After replacing the filter screen reassemble the unit as before ...

Page 88: ...CONNECT SERIES SERVICE MANUAL 86 ENGLISH Maintenance Exploded View and Parts Lists ODU Exploded View and Parts Lists AUH2436ZGDA ...

Page 89: ...Compressor And Fittings 26 Handle 27 Chassis Assembly 28 Foot 29 Cut Off Valve No Material name 30 Fusible Plug 31 Gas liquid Separator 32 Accumulator 33 4 Way Valve Coil 34 Drainage Hole Cap 35 Temperature Sensor 36 Temperature Sensor 37 Electrical Heater Compressor 38 Electrical Heater Chassis 39 Electric Expansion Valve Sub Assembly 40 Drainage Joint 41 Cut Off Valve 3 8 N 42 Strainer 43 Electr...

Page 90: ...CONNECT SERIES SERVICE MANUAL 88 ENGLISH Maintenance AUH4860ZGDA ...

Page 91: ...xpand Valve Fitting 23 Electric Expansion Valve Sub Assembly 24 Compressor and Fittings 25 Accumulator No Material name 26 Foot 27 Chassis Sub Assembly 28 Cut Off Valve Sub Assembly 29 Strainer 30 Magnet Coil Electromagnetic Valve 31 Electric Expand Valve Fitting 32 One Way Valve 33 Cut off Valve 34 Electronic Expansion Valve 35 4 Way Valve Assembly 36 Pressure Sensor 37 Strainer 38 Cut Off Valve ...

Page 92: ...CONNECT SERIES SERVICE MANUAL 90 ENGLISH Maintenance IDU Exploded View and Parts Lists UUY24ZGDAA UUY36ZGDAA ...

Page 93: ... 11 Centrifugal Fan Assembly 12 Motor For Centrifugal Fan 13 Brushless DC Motor 14 Top Cover Board Sub Assembly 15 Bottom Cover Plate Assembly 16 Right Side Plate 17 Bottom Cover Plate Assembly 18 Water Tray 19 Strainer 20 Cut Off Valve 3 8 N 21 Thermal Expansion Valve 22 Cut Off Valve 23 Evaporator Assembly 24 Evaporator Assembly 25 Evaporator Assembly 26 Water Tray Assembly 27 Choke Plug 28 Wate...

Page 94: ...ly 8 Water Tray 9 Electric Box Assembly 10 Terminal Board 11 Transformer 12 Terminal Board 13 Terminal Board 14 Main Board 15 Top Cover Board Sub Assembly 16 Bottom Cover Plate Assembly No Material name 17 Bottom Cover Plate Assembly 18 Lower Cover Plate Sub Assembly 2 19 Cut off Valve 3 8 N 20 Thermal Expansion Valve 21 Cut off Valve 22 Strainer 23 Choke Plug 24 Evaporator Assembly 25 Evaporator ...

Page 95: ... 4 23 16 39 1 577 75 2 24 15 68 1 613 Temperature Sensor Temperature Resistance Voltage Lists 15 KΩ Temperature Sensors including ODU temperature sensors F C Resistance kΩ Voltage V 77 0 25 15 1 65 78 8 26 14 36 1 686 80 6 27 13 74 1 722 82 4 28 13 16 1 758 84 2 29 12 6 1 793 86 0 30 12 07 1 829 87 8 31 11 57 1 863 89 6 32 11 09 1 897 91 4 33 10 63 1 931 93 2 34 10 2 1 964 95 0 35 9 779 1 998 96 8...

Page 96: ...3 141 231 8 111 0 737 3 145 233 6 112 0 717 3 15 235 4 113 0 697 3 153 237 2 114 0 678 3 157 239 0 115 0 66 3 161 F C Resistance kΩ Voltage V 240 8 116 0 642 3 165 242 6 117 0 625 3 168 244 4 118 0 608 3 171 246 2 119 0 592 3 175 248 0 120 0 577 3 178 249 8 121 0 561 3 181 251 6 122 0 547 3 184 253 4 123 0 532 3 187 255 2 124 0 519 3 19 257 0 125 0 505 3 192 258 8 126 0 492 3 195 260 6 127 0 48 3 ...

Page 97: ...5 31 47 1 282 60 8 16 30 04 1 319 62 6 17 28 68 1 356 20 KΩ Pipeline Temperature Sensors including temperature sensors for defroster IDU and ODU pipes F C Resistance kΩ Voltage V 64 4 18 27 39 1 393 66 2 19 26 17 1 429 68 0 20 25 01 1 466 69 8 21 23 9 1 503 71 6 22 22 85 1 54 73 4 23 21 85 1 577 75 2 24 20 9 1 614 77 0 25 20 1 65 78 8 26 19 14 1 686 80 6 27 18 32 1 722 82 4 28 17 55 1 758 84 2 29 ...

Page 98: ...039 3 137 230 0 110 1 01 3 141 231 8 111 0 9825 3 145 233 6 112 0 9556 3 15 235 4 113 0 9295 3 153 F C Resistance kΩ Voltage V 237 2 114 0 9043 3 157 239 0 115 0 8799 3 161 240 8 116 0 8562 3 165 242 6 117 0 8333 3 168 244 4 118 0 8111 3 171 246 2 119 0 7895 3 175 248 0 120 0 7687 3 178 249 8 121 0 7485 3 181 251 6 122 0 7289 3 184 253 4 123 0 7099 3 187 255 2 124 0 6915 3 19 257 0 125 0 6736 3 19...

Page 99: ... 4 13 84 956 0 348 57 2 14 81 052 0 362 59 0 15 77 349 0 378 50 KΩ Discharge Temperature Sensors including discharge air temperature sensor F C Resistance kΩ Voltage V 60 8 16 73 896 0 393 62 6 17 70 503 0 41 64 4 18 67 338 0 427 66 2 19 64 333 0 444 68 0 20 61 478 0 462 69 8 21 58 766 0 48 71 6 22 56 189 0 499 73 4 23 53 738 0 518 75 2 24 51 408 0 537 77 0 25 49 191 0 558 78 8 26 47 082 0 578 80 ...

Page 100: ... 2 496 215 6 102 3 1285 2 514 217 4 103 3 0401 2 531 219 2 104 2 9547 2 547 221 0 105 2 8721 2 564 222 8 106 2 7922 2 58 224 6 107 2 715 2 595 F C Resistance kΩ Voltage V 226 4 108 2 6404 2 611 228 2 109 2 5682 2 626 230 0 110 2 4983 2 64 231 8 111 2 4308 2 655 233 6 112 2 3654 2 669 235 4 113 2 3021 2 682 237 2 114 2 2409 2 696 239 0 115 2 1816 2 709 240 8 116 2 1242 2 722 242 6 117 2 0686 2 734 ...

Page 101: ... 164 57 7 166 58 4 168 59 170 59 8 172 60 5 174 61 1 176 61 8 178 62 5 180 63 1 182 63 8 184 64 5 186 65 1 PSIG F 188 65 8 190 66 4 192 67 194 67 7 196 68 3 198 68 9 200 69 5 202 70 1 204 70 7 206 71 4 208 72 210 72 6 212 73 2 214 73 8 216 74 3 218 74 9 220 75 5 222 76 1 224 76 7 226 77 2 228 77 8 230 78 4 232 78 9 234 79 5 236 80 238 80 6 240 81 1 242 81 6 244 82 2 246 82 7 248 83 3 250 83 8 252 ...

Page 102: ... 3 466 128 7 468 129 470 129 3 472 129 7 474 130 476 130 3 478 130 7 480 131 482 131 3 484 131 6 486 132 488 132 3 490 132 6 492 132 9 494 133 3 496 133 6 498 133 9 500 134 502 134 5 504 134 8 506 135 2 508 135 5 510 135 8 512 136 1 514 136 4 516 136 7 518 137 520 137 3 522 137 6 524 137 9 526 138 3 528 138 6 530 138 9 532 139 2 534 139 5 536 139 8 538 140 1 PSIG F 540 140 4 544 141 548 141 6 552 ...

Page 103: ... 1320 17 1350 18 1400 19 1440 20 1470 21 1520 22 1560 23 1600 24 1640 25 1680 26 1730 27 1780 28 1820 29 kPa C 1880 30 1910 31 1960 32 2030 33 2080 34 2130 35 2180 36 2240 37 2290 38 2350 39 2410 40 2460 41 2510 42 2580 43 2650 44 2710 45 2770 46 2840 47 2910 48 2980 49 3050 50 3100 51 3180 52 3250 53 3320 54 3400 55 3480 56 3540 57 3630 58 3720 59 Operation Tools The following tools will be used ...

Page 104: ...www geappliances com GE Appliances A Haier Company Appliance Park Louisville KY 40225 2021 GE Appliances A Haier Company Revision Date August 2021 ...

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