Haier GE APPLIANCES Connect Series Service Manual Download Page 18

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CONNECT SERIES SERVICE MANUAL

ENGLISH

Troubleshooting

Drive Board

Model: AUH2436ZGDA

⑩

1100

⑩

1133

⑩

1111

⑩

1122

⑩

1177

⑩

1144

⑩

1155

⑩

1166

⑩

No.

Printing

Interface

No.

Printing

Interface

L2-2

PFC induction wire (blue)

P-OUT

Reserved

AC-L

Live wire

L1-2

PFC induction wire (white)

L1-1

PFC induction wire (brown)

L2-1

PFC induction wire (yellow)

Neutral wire

G-OUT

Reserved

COMM1

Communication terminal, same with

COMM

Compressor U phase terminal

COMM

Communication terminal, same with

COMM1

Compressor V phase terminal

PWR

Drive power supply terminal

Compressor W phase terminal

DC-MOTOR1

DC fan terminal

JTAG1

Programming interface (for testing)

DC-BUS1

Power discharge terminal (for

testing)

Summary of Contents for GE APPLIANCES 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 07 20 ...

Page 2: ...d this manual before 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 Controls 4 Operation Modes 4 Control Modes 6 Functions 7 Troubleshooting 10 Wiring Diagrams 10 PCB Layout 13 Error Codes 21 Troubleshooting 22 Failures Not Caused by Errors 36 Maintenance 37 System Diagram 37 Syste...

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: ...436ZGDA 208 230V 1Ph 60Hz 35 AUH4860ZGDA 208 230V 1Ph 60Hz 45 Model Cooling Heating Capacity Btu h 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 ...

Page 6: ...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 7: ...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 8: ... will be de energized 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...

Page 9: ...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 10: ...door 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 O...

Page 11: ...hort press on SW1 to save The menu will time out if no function is performed within 10 seconds Forced Operation Control Press and hold the SW1 button for about 5 seconds to enter the first menu level The outdoor unit main board display will flash Short press the SW1 button to switch the function to 09 Short press SW2 or SW3 to change the selection within function 09 to ON followed by a short press...

Page 12: ...IES SERVICE MANUAL 10 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 13: ...CONNECT SERIES SERVICE MANUAL 11 ENGLISH Troubleshooting Model AUH4860ZGDA ...

Page 14: ...CONNECT SERIES SERVICE MANUAL 12 ENGLISH Troubleshooting Model UUY48ZGDAA UUY60ZGDAA Indoor Units Model UUY24ZGDAA UUY36ZGDAA ...

Page 15: ...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 16: ...CONNECT SERIES SERVICE MANUAL 14 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 17: ...4 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 valve...

Page 18: ...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 19: ...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 20: ...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 21: ...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 22: ...CONNECT SERIES SERVICE MANUAL 20 ENGLISH Troubleshooting AUH4860ZGDAA ...

Page 23: ...memory chip error 9 H4 Overload 10 H5 IPM protection 11 H6 DC fan error 12 H7 Driver out of step protection 13 HC PFC protection 14 Lc Startup failure 15 P0 Driver reset protection 16 P5 Over current protection 17 P6 Master control and driver communication error 18 P7 Driver module sensor error 19 P8 Driver module high temperature protection 20 PA AC current protection 21 Pc Driver current error 2...

Page 24: ...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 25: ...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 26: ...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 27: ...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 28: ...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 29: ...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 30: ...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 31: ... 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 32: ...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 33: ...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 34: ...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 35: ...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 36: ...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 37: ...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 38: ...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 39: ...e 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 switch 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 press...

Page 40: ...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 41: ...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 42: ...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 43: ...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 44: ...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 45: ...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 46: ...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 47: ...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 48: ...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 49: ...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 50: ...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 51: ... 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 52: ...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 53: ...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 54: ...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 55: ...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 56: ...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 57: ...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 58: ...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 59: ...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 60: ...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 61: ...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 62: ...els 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 from 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 63: ... 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 s...

Page 64: ...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 65: ...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 66: ...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 67: ...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 68: ...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 69: ...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 70: ...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 71: ...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 72: ...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 73: ...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 74: ...per 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 electronic expansion valve Take off the coil of electronic expansion valve Loosen the connection pip...

Page 75: ...stall 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 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 ...

Page 76: ... 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 77: ...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 78: ...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 79: ...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 80: ... 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 81: ...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 82: ...CONNECT SERIES SERVICE MANUAL 80 ENGLISH Maintenance Exploded View and Parts Lists ODU Exploded View and Parts Lists AUH2436ZGDA ...

Page 83: ...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 84: ...CONNECT SERIES SERVICE MANUAL 82 ENGLISH Maintenance AUH4860ZGDA ...

Page 85: ...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 86: ...CONNECT SERIES SERVICE MANUAL 84 ENGLISH Maintenance IDU Exploded View and Parts Lists UUY24ZGDAA UUY36ZGDAA ...

Page 87: ... 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 88: ... 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 89: ...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 90: ...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 91: ...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 92: ... 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 93: ... 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 94: ... 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 95: ... 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 96: ...CONNECT SERIES SERVICE MANUAL ENGLISH Appendices 94 ...

Page 97: ...CONNECT SERIES SERVICE MANUAL 95 ENGLISH Appendices ...

Page 98: ...CONNECT SERIES SERVICE MANUAL 96 ENGLISH Appendices ...

Page 99: ...CONNECT SERIES SERVICE MANUAL 97 ENGLISH Appendices ...

Page 100: ... The following tools will be used 1 Liquid level gauge 2 Screwdriver 3 Electric driven rotary hammer 4 Drill 5 Flare Tool 6 Torque wrench 7 Open end wrench 8 Pipe cutter 9 Leak detector 10 Vacuum pump 11 Pressure gauge 12 Multi meter 13 Hexagon wrench 14 Measuring tape ...

Page 101: ......

Page 102: ...www geappliances com GE Appliances A Haier Company Appliance Park Louisville KY 40225 2020 GE Appliances A Haier Company Revision Date July 2020 ...

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