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To replace the electronic expansion valve (EEV):

1. Turn power off.

2. Remove the rear shroud cover and the

rear shroud as 1 assembly. (See

Machine

Compartment Covers

3. Remove the evaporator inlet sensor from

the evaporator inlet tubing. (See

Temperature

Sensors

6. If you are using a torch to replace the EEV

valve, unsolder the EEV from the drier inlet tube

and the evaporator inlet tube using currently

accepted procedures.

7. Apply a liberal amount of heat-absorbing

thermal paste, such as Part #WX5X8927, to the

replacement EEV.

9. Install the evaporator inlet sensor to the

evaporator inlet tube, then insulate the sensor

location with new mastic (Part #WS03X10075).

Coil

Detent

Indent

Clip

Detent

EEV

4. Rotate the coil until the indent on the coil clip is

between detents on the valve body.

5. Lift the coil from the valve body.

Evaporator Inlet Sensor

Thermal Paste

8. Braze the dryer inlet tube and the evaporator

inlet tube using silfos.

Содержание GeoSpring GEH50DEED

Страница 1: ...GE Appliances General Electric Company Louisville Kentucky 40225 31 9225 GE Hybrid Water Heater GEH50DEED Technical Service Guide April 2012 GE Appliances ...

Страница 2: ...NG To avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary checks RECONNECT ALL GROUNDING DEVICES If grounding wires screws straps clips nuts or washers used to complete a path to ground are removed for service they must be returned to their original positi...

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Страница 5: ...ion Valve EEV 60 Element Covers 44 Elements 50 Evaporator Fan 54 Installation 18 Introduction 7 Machine Compartment Covers 39 Nomenclature 6 Overview 9 Refrigeration System 33 Schematic and Wiring Diagram 77 Sealed System Service Overview 34 Service Diagnostic Mode 62 Single Speed Compressor 58 Technical Data 8 Temperature Sensors 44 Thermal Cutout TCO 48 Warranty 78 Water Heater Components 39 ...

Страница 6: ...gh Efficiency H Hybrid Medium 4500W Elements G E H 50 D E E D SR A Fuel Type E Electric Gallon Capacity Color SR Gray Shark Skin Body Laser Red Shroud Marketing Year D 2012 Model Designator E LED Tactile Overlay UI Electronic Control Top Brand G GE Feature Pack E US Hybrid Heat Pump Electric High Demand Vacation Revision The nomenclature tag is located on the right front of the tank The mini manua...

Страница 7: ...z Temperature set range 100 F to 140 F Operating pressure 20 to 120 psi Product weight 179 lbs Uses approximately 1830 kwh per year standard electric water heaters use approximately 4881 Meets 2012 DOE ENERGY STAR standards for heat pump water heaters Energy Factor 2 40 EF Designed to use approximately half the energy and save 325 per year Energy Star requirement is 2 0 EF or higher Based on 10 65...

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Страница 9: ... air filter that is removable and occasionally needs to be cleaned When the filter requires cleaning the red light above the filter button will be illuminated and an audible beep will sound To remove the filter squeeze 2 tabs and lift the filter from the top of the unit The filter can be wiped clean with a damp rag or rinsed with warm water The cost of operating a traditional water heater has been...

Страница 10: ...control will automatically use the efficient heat pump mode if water usage is normal but when demand is higher the electric mode will be used Electric Mode uses the upper and lower heating elements to heat the water Heats water the fastest but is the least energy efficient mode Vacation Use this mode when hot water is not needed for an extended period of time The control will drop the temperature ...

Страница 11: ... initial amount of hot water 5 30 minutes and beyond The upper element turns off and the compressor turns back on Uses heat pump for majority of heating 6 The green LED beside the operating mode pad will be lit Note The heat pump operating range is 45 F to 120 F If the ambient temperature is outside of this range the heat pump will turn off and the electric elements will be used until the ambient ...

Страница 12: ... the tank a full tank would absorb the heat and the temperature increase would take longer Note In the event of a power loss when power is restored the control will resume whatever heating mode had been operating prior to power loss Sealed System Startup Ambient temperature OK 45F T5 120F Switch to electric No Is evaporator free of frost T3a 32F No Yes Start Sealed System Yes Ensure compressor has...

Страница 13: ... less than set temperature Run sealed system until T2 reaches set temperature T2 is less than set temperature minus 5F T2 ST 5F Has there been a flow event Small flow of less than 10 gallons and T2 ST 1F Water temperature 5 F less than set point or 1 F less if water has been used Start sealed system Note Compressor and evaporator fan cycle on off together Continued Next Page ...

Страница 14: ...arge flow of 20 30 gallons Large flow event active Lower Element on until T2 reaches set temperature Yes No Hybrid Mode Water Water temperature 5 F less than set point Use sealed system Water temperature 1 F less than set point Small amount of water has been used less than 10 gallons Use sealed system Large amount of water has been used 10 to 20 gallons Use lower element Water temperature 30 F les...

Страница 15: ...s set temperature Medium flow of 10 20 gallons Medium flow event active Lower Element on until T2 reaches set temperature Yes No Water temperature 5 F less than set point Use Sealed system Water temperature 1 F less than set point Small amount of water has been used less than 10 gallons Use sealed system Medium amount of water has been used 10 to 20 gallons Use lower element Water temperature 20 F...

Страница 16: ...nus 25F T2 ST 25F T2 is less than set temperature minus 5F T2 ST 5F Has there been a flow event T2 is less than set temperature minus 1F T2 ST 1F No Yes Water temperature 5 F less than set point Use lower element Water temperature 1 F less than set point and water has been used Use lower element Water temperature 25 F less than set point Use upper element until 7 F less than set point then Use low...

Страница 17: ... steps 1 Select VACATION by using the Mode button 2 Input total days you will be gone in this example 14 by pressing the UP arrow button the default is 7 days 3 Press ENTER The unit will drop the water temperature down to 50ºF for 1 day less in this example for 13 days At the end of the 13th day it will automatically return to the previous operating mode and heat the water to the original temperat...

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Страница 23: ... 23 Control Features Continued Next Page ENTER F C DAYS HEAT PUMP ONLY HYBRID HIGH DEMAND ELECTRIC FAN OFF VACATION Hold for F C Hold to Override PS Power Saver Hold to Reset POWER FILTER MODE SAVER ...

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Страница 25: ... 25 Continued Next Page mode the heating elements are activated sooner than in the Hybrid mode ...

Страница 26: ... 26 Continued Next Page Usea flat screwdriver toturn valve NOTE Refer to the Hydrogen Gas Caution on page 4 ...

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Страница 28: ...d Next Page Front Drain Valve Upper Element Cover Lower Element Cover Upper Element T2 Tank Sensor Upper Element Cover and Styrofoam Insulation Removed Lower Element Lower Element Cover Removed Control Housing Relief Valve Thermal Cutout ...

Страница 29: ...nt Front Shroud and Front Shroud Cover Removed Continued Next Page Display Control Panel Start Capacitor T5 Ambient Thermistor ACM Module Connector Appliance Communication Module ACM Connector for use with the ACM sold separately ...

Страница 30: ... 30 Machine Compartment Rear Front and Back Shrouds and Front Shroud Cover Removed Continued Next Page Evaporator Drain Pan Evaporator Fan Motor ...

Страница 31: ...Front and Back Shrouds and Front Shroud Cover Removed Electronic Expansion Valve EEV Evaporator T3b Evaporator Outlet Sensor T3a Evaporator Inlet Sensor Accumulator Compressor Filter Drier Primary Drain Overflow Tube Continued Next Page ...

Страница 32: ... 32 Component Locator Views Machine Compartment Left Side Front and Back Shrouds and Front Shroud Cover Removed T4 Compressor Outlet Sensor Fan Shroud Anode Access Cover ...

Страница 33: ...ately 10 F T3b T3a Although the EEV is designed to maintain a superheat of approximately 10 F T3b T3a a range of 5 F to 15 F is considered normal when temperatures are between 45 F and 95 F To prevent the compressor from stalling at temperatures of 95 F or greater the superheat value changes The control takes the T5 temperature minus 95 and adds 10 to calculate superheat superheat T5 95 10 The EEV...

Страница 34: ...e R134a recovery pump to the piercing valve and evacuate the system to a minimum 20 inch vacuum the compressor may be used if functioning 4 Make the necessary sealed system repairs 5 Replace the drier with a new drier containing an access valve 6 Braze a permanent access valve on the compressor process stub See photo EEV Replacement Assembly Continued Next Page 7 Attach the R134a recovery pump to ...

Страница 35: ... on both sides of the fitting 3 Cut the copper tubing close to the fitting 2 Cut below any scratches on the aluminum tubing 4 Position the tubing and apply LOKPREP Part WR88X16 5 Using LOKRING connector part WR97x10044 5 16 in to 5 16 in crimp the lower section of the connector being careful not to bend or kink the aluminum condenser tubing Continued Next Page LOKRING Connector ...

Страница 36: ... Method Note LOKPREP not needed when using SwageLok method SwageLok part WS86X10004 To prevent creation of leak paths through lengthwise groves always clean tubing in a rotory direction 1 Clean tubing on both sides of the fitting 2 Cut below any scratches on the aluminum tubing Continued Next Page Note Refer to Service Guide 31 9067 for additional information using the Lokring method ...

Страница 37: ...g each of the two 5 8 in hex nuts 5 Tighten using 2 wrenches 1 to hold the fitting body and 1 to tighten each hex nut Fitting Body Hex Nut Front Ferrule Back Ferrule 3 Cut the copper tubing close to the fitting 4 Place the hex nut back ferrule and front ferrule on the end of each tube as shown Hex Nut Hex Nut ...

Страница 38: ...r J602 T4 Compressor Outlet Sensor T3B Evaporator Outlet Sensor T3A Evaporator Inlet Sensor J603 EEV Electronic Expansion Valve J604 T5 Ambient Sensor K201 DLB Double Line Break K203 UE Upper Element K204 LE Lower Element K202 Comp Compressor K201 K203 K204 K202 J601 J201 J602 J603 J604 ...

Страница 39: ...el is attached to the front shroud The rear shroud is vented to allow air to exhaust from the evaporator The rear shroud cover contains the electrical junction box and covers the top of the fan shroud To remove the front shroud cover 1 Remove the air filter See Control Features Cleaning the Filter 2 Remove the two T 20 Torx screws from the top of the trim ring 3 Lift the front of the trim ring pus...

Страница 40: ...ving the junction box from the rear shroud cover 6 Lift and disengage the junction box from the opening in the rear shroud cover Junction Box Cover Junction Box 4 Lift the front shroud straight up to disengage the 4 tabs from slots in the rear shroud 5 Pull the front shroud out from the machine compartment then carefully tilt and pass the control panel thru the opening Rear Shroud Cover Continued ...

Страница 41: ...e top of the tank with 4 screws and 3 tabs and to the rear shroud cover with 4 screws 1 Remove the front shroud See To remove the front shroud this section 2 Remove the two T 20 Torx screws from each front bottom corner 3 Remove the four T 20 Torx screws from the top of the rear shroud 4 Pull the bottom of the rear shroud out then remove it from the water heater 10 Lift the rear shroud cover from ...

Страница 42: ...rom each front bottom corner See To remove the rear shroud this section then follow step 2 3 Pull the bottom of the rear shroud out then remove the assembly from the water heater 3 Pivot the control panel out approximately 130 degrees as shown below Continued Next Page Control Panel The control panel is attached to the front shroud with a screw at the bottom and 2 tabs at the top that grip the ins...

Страница 43: ... it is necessary to loop the red wire from L1 through the opening in the current sensor as shown below before connecting it to relay K201 The current sensor enables the control to determine when the compressor upper element and lower element are operating The control checks for compressor amps 1 5 amps and heating element amps 10 amps 5 seconds after power up and every 10 minutes thereafter 5 Remo...

Страница 44: ...sediment that could clog other home faucets that contain screens Temperature Sensors Sensor Description Normal temperature range Resistance range in ohms Resistance at 77 F T2 Tank 30 F 160 F 34K 1 75K 10K T3a Evaporator inlet 15 F 130 F 57K 3K 10K T3b Evaporator outlet 15 F 130 F 57K 3K 10K T4 Compressor outlet 30 F 250 F 188K 2K 55K T5 Ambient 15 F 130 F 57K 3K 10K Note Sensor resistance value i...

Страница 45: ...between the tank and the sensor It is not necessary to apply additional paste if the sensor needs to be replaced Evaporator Inlet Sensor The evaporator inlet sensor T3a provides the control with evaporator inlet temperature during sealed system operation The control checks the sensor to confirm 1 Evaporator is frost free above 32 F at compressor startup 2 Evaporator inlet is greater than 20 F afte...

Страница 46: ...before the compressor starts 3 The electronic expansion valve EEV is operating properly and valve rotation is within range 4 The condition of the sensor is either open or shorted The sensor is considered open if the voltage at control board location T3b is greater than 4 88 VDC and shorted if less than 0 098 VDC If any of the above tests fail the control will stop the sealed system and operate the...

Страница 47: ...tion of the sensor is either open or shorted The sensor is considered open if the voltage at control board location T4 is greater than 4 88 VDC and shorted if less than 098 VDC If any of the above tests fail the control will stop the sealed system and operate the water heater in electric mode Specific failures associated with the compressor outlet sensor can initiate fault codes FA Fb FE and F7 Se...

Страница 48: ...nsor is attached to the bottom of the junction box with a plastic wire tie The front shroud must be removed to access the ambient sensor See Machine Compartment Covers Ambient Sensor Upper Element Cover Continued Next Page Junction Box Wire Tie Thermal Cutout TCO The TCO provides additional safety from the tank overheating The TCO is located between the T2 tank sensor and the upper element See Com...

Страница 49: ...guard 2 Carefully pull the upper element Styrofoam insert straight out Styrofoam Insert Terminal Guard Reset 4 Mark then disconnect the wires from the TCO 5 Lift each of the 2 clips that hold the TCO to the tank and pull the TCO up Clip Clip TCO Tab Tab ...

Страница 50: ...lacing the lower water heater element you will have to completely drain the water heater 3 Drain the water heater to a level just below the element to be replaced 4 Remove the two T 20H Torx security screws and the element cover to the element to be replaced 5 Carefully pull the Styrofoam insulation cover upper element only straight out 6 Remove the 2 Phillips head screws that attach the 2 element...

Страница 51: ...CO 170 F UPPER ELEMENT T2 NO NO COM COM NC L1 L2 GRAY ORANGE PINK VIOLET T5 ambient BLACK RED 4500W 12 8 Ω 18 75 A CT101 K203 K201 1 2 3 4 T5 T2 T3A T3B T4 EEV YELLOW WHITE BLACK RED WHITE BLUE ORANGE YELLOW RED GRAY Continued Next Page ...

Страница 52: ...CO 170 F T2 NO NO NO COM COM COM NC NC L1 L2 YELLOW PINK VIOLET T5 ambient BLACK RED LOWER ELEMENT 4500W 12 8 Ω 18 75 A BROWN BROWN CT101 K204 K203 K201 1 2 3 4 T5 T2 T3A T3B T4 EEV YELLOW WHITE BLACK RED WHITE BLUE ORANGE YELLOW RED GRAY ...

Страница 53: ...ain the water heater 4 Remove the front shroud See Machine Compartment Covers 5 Remove the anode rod cover then use a ratchet wrench and 11 16 in deep socket to unscrew the anode rod from the heater Note If the anode rod won t loosen slip a steel pipe onto a ratchet wrench handle for extra leverage 6 Lift out and discard the old anode rod 7 Seal the threads of the anode rod with the appropriate Te...

Страница 54: ... accurate water temperature reading from the T2 sensor be sure to align the hole so that it will spray water towards the T2 sensor When replacing the dip tube use GE part WS35X10072 Evaporator Fan The evaporator fan is located in the back of the machine compartment See Component Locator Views This single speed fan operates on 240 VAC and cycles on and off with the compressor If the fan fails an F ...

Страница 55: ...sconnect the brown wire from the overload protector 9 Carefully peel back the foam seal from the top of the evaporator 8 Remove the brown wire from the 3 wire retainers located on the front of the condensate drain pan 10 Remove the 2 top evaporator shroud screws 1 on each side 11 Loosen the 2 bottom evaporator shroud screws 1 on each side Wire Tie Bottom Hook 1of 2 Wire Retainer 1 of 3 Foam Seal R...

Страница 56: ...ss out from under the condensate drain pan If necessary rotate the fan assembly to the left 13 Cut off the plastic wire tie and remove the two 1 4 in hex head screws that attach the fan motor to the fan shroud Note When replacing the fan assembly position both air seals to block wire entry openings under the condensate drain pan 14 Remove the 9 32 in hex nut lockwasher spacer washer and the fan bl...

Страница 57: ...Covers 3 Remove the wires from the 3 wire retainers located on the front of the condensate drain pan Wire Retainer 1 of 3 4 Remove the 1 4 in hex head screw that attaches the right side of the evaporator to the condensate drain pan 5 Remove the two 5 16 in hex head screws that attach the right side of the condensate drain pan to the water heater 6 Remove the 1 4 in hex head screw that attaches the...

Страница 58: ...and recharge the system using currently accepted procedures See Evacuation and Charging Procedure Bracket Single Speed Compressor The compressor is a reciprocating type Refer to the mini manual for the BTU hour rating and the compressor capacity test specification The compressor utilizes a start capacitor rated at 145 to 177 ufd The capacitor is installed in a bracket that is attached to the top o...

Страница 59: ...LUE YELLOW PINK VIOLET T5 ambient EXTERNAL COMPRESSOR OVERLOAD BLACK RED BROWN YELLOW BLUE GRAY CT101 FAN EVAPORATOR K202 K204 K203 K201 1 2 3 4 T5 T2 T3A T3B T4 EEV YELLOW WHITE BLACK RED WHITE BLUE ORANGE YELLOW RED GRAY BLUE Heat Pump Circuit MAIN BOARD FAN START CAPACITOR BLACK YELLOW BLACK BLUE TCO BROWN ...

Страница 60: ...coils inside the EEV operate off 12 VDC pulses supplied by the control The pulses occur too quickly to be measured with a voltmeter Continued Next Page Valve Construction and Operation Energized coils rotate the magnet A precise gearing arrangement with a male female screw set attached to the rotating magnet drives the valve needle in a linear motion The opening degree of the valve is determined b...

Страница 61: ...evaporator inlet tube using currently accepted procedures 7 Apply a liberal amount of heat absorbing thermal paste such as Part WX5X8927 to the replacement EEV 9 Install the evaporator inlet sensor to the evaporator inlet tube then insulate the sensor location with new mastic Part WS03X10075 Coil Detent Indent Clip Detent EEV 4 Rotate the coil until the indent on the coil clip is between detents o...

Страница 62: ...a two tone sound if entering the diagnostic mode is successful The service mode will timeout after 15 minutes of no button activity To exit the service mode at any time press and hold the UP and DOWN arrow buttons simultaneously for 5 seconds and listen for the tones ENTER F C DAYS HEAT PUMP ONLY HYBRID HIGH DEMAND ELECTRIC FAN OFF VACATION Hold for F C Hold to Override PS Power Saver Hold to Rese...

Страница 63: ...mperature is outside the normal operating range of T5 45 F to 120 F the compressor will not start in diagnostic mode Heating elements can be energized The compressor minimum time off 0 to 2 minutes for the sealed system pressure to equalize is not honored Therefore if the compressor is energized and the sealed system pressure has not equalized the compressor will attempt to run Once the service mo...

Страница 64: ... heating load 2 After selecting a load press the MODE button to HEAT PUMP view sensors and press the down arrow button to view the sensor and it s temperature To check and energize the heating components while in the service diagnostic mode press the MODE button until the green light is next to HYBRID Continued Next Page ...

Страница 65: ...5 minute timeout Pressing the DOWN arrow button will switch to upper element Lower Element OFF Upper Element OFF To energize the upper element press ENTER upper element ON 5 minute timeout Pressing the DOWN arrow button will switch to compressor Continued Next Page ...

Страница 66: ...N 10 minute timeout After turning on a load press the MODE button until the HEAT PUMP led light is lit This will return the diagnostic screen to view sensor function where the sensor and it s temperature can be observed Compressor ON 10 minute timeout Continued Next Page ...

Страница 67: ... temperature being viewed Pressing the DOWN arrow button will switch to the next sensor T3a T3a sensor being viewed Repeatedly alternates sensor then temperature T3a sensor temperature being viewed Pressing the DOWN arrow button will switch to the next sensor T3b Continued Next Page ...

Страница 68: ...sor temperature being viewed Pressing the DOWN arrow button will switch to the next sensor T4 T4 sensor being viewed Repeatedly alternates sensor then temperature T4 sensor temperature being viewed Pressing the DOWN arrow button will switch to the next sensor T5 Continued Next Page ...

Страница 69: ... to be displayed to the consumer An important note on faults counts If the control has recorded a fault for a specific component but the next time the heating cycle starts that component operates normally the fault count would decrease by 1 For example if the control records a F3 compressor failure for the first 3 heating cycles the fault count would be 3 If the 4th time the compressor started the...

Страница 70: ...ery 40 seconds To silence the beeper press the up or down arrow button The control monitors the following activities for faults T4 rises at least 20 F during first 30 minutes of compressor run T4 is greater than 120 F after first 30 minutes of compressor run T3a is greater than 20 F after first 30 minutes of compressor run Difference between T3a and T3b is greater than 5 F after 30 minutes T4 temp...

Страница 71: ...e reached 10 counts There may be codes that have less then 10 counts No error codes shown below To view error codes with less than 10 counts press the FILTER button The display switches to individual fault counts starting with FA In this example FA being shown The control will alternate between error cade and number of faults Continued Next Page ...

Страница 72: ...t illuminates when The sensors detect a blockage or the accumulated run time of the compressor is greater than 3000 hours The control registers 5 fault counts In the event of a power loss the fault code will decrease by 1 when power is restored When the filter light is illuminated the sealed system is locked out but the temperature and mode LED stays at the set point Continued Next Page ...

Страница 73: ... bAd linE fault code being viewed Display repeatedly alternates bAd then linE To clear ALL fault codes and fault counters the control must be in the diagnostic mode with HIGH DEMAND lit Press and hold the ENTER button for 5 seconds and listen for the tones The control sets the counter to zero Continued Next Page ...

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Страница 76: ...2064 65 13667 105 5028 30 36033 70 11953 110 4471 35 31298 75 10511 115 3986 40 23471 80 9262 120 3545 45 23531 85 8139 125 3189 50 20471 90 7195 130 2854 T4 Temperature Table Guide F Resistance F Resistance F Resistance 30 189755 105 28424 180 6368 35 163719 110 25526 185 5845 40 142030 115 22851 190 5336 45 123347 120 20483 195 4904 50 108072 125 18452 200 4500 55 94689 130 16627 205 4142 60 833...

Страница 77: ...NO NO NO COM COM COM COM NC NC L1 L2 GRAY ORANGE LIGHT BLUE YELLOW PINK VIOLET T5 ambient YELLOW EXTERNAL COMPRESSOR OVERLOAD BLACK RED LOWER ELEMENT 4500W 12 8 Ω 18 75 A 4500W 12 8 Ω 18 75 A BROWN BROWN BROWN YELLOW BLUE GRAY CT101 FAN EVAPORATOR WHITE BLACK RED WHITE BLUE K202 K204 K203 K201 ORANGE YELLOW RED GRAY 1 2 3 4 BLUE ...

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