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GE Appliances

General Electric Company

Louisville, Kentucky 40225

31-9196

ZDIS150WSS

ZDIS150WBB

ZDIS150WWW

GE Appliances & Lighting

Technical Service Guide

March 2010

Monogram

Under-the-Counter

Icemaker

Содержание Monogram ZDIS150WBB

Страница 1: ...GE Appliances General Electric Company Louisville Kentucky 40225 31 9196 ZDIS150WSS ZDIS150WBB ZDIS150WWW GE Appliances Lighting Technical Service Guide March 2010 Monogram Under the Counter Icemaker ...

Страница 2: ...tem may result in personal injury and property damage The manufacturer or seller cannot be responsible for the interpretation of this information nor can it assume any liability in connection with its use WARNING Toavoidpersonalinjury disconnectpowerbefore servicingairconditioning or heat pump systems If electrical power is required for diagnosis or test purposes disconnect the power immediately a...

Страница 3: ...ectronic Control Housing Components 21 Evaporator 29 Evaporator Thermistor 20 Features and Benefits 5 Hot Gas Solenoid 26 Hot Gas Valve 27 Measured Fill Water Valve 26 Nomenclature 4 Reservoir Drain Pump 24 Schematics and Strip Circuits 42 Sealed System 27 Service Test Mode Diagnostic Mode 40 Specifications 5 Theory of Operation 6 Troubleshooting 37 Warranty 44 Water Distributor 20 Water Level Sen...

Страница 4: ...d tucked into one of the loops of the condenser coil Serial Number The first two characters of the serial number identify the month and year of manufacture Example AT123456S January 2010 A JAN 2010 T D FEB 2009 S F MAR 2008 R G APR 2007 M H MAY 2006 L L JUN 2005 H M JUL 2004 G R AUG 2003 F S SEP 2002 D T OCT 2001 A V NOV 2000 Z Z DEC 1999 V The letter designating the year repeats every 12 years Ex...

Страница 5: ... Level Sensor Control Board Setting Harvest Control Thermistor under Evaporator Bin Ice Level Control Thermistor on Side of Bin Refrigerant R134a Ambient Temperature 55 to 100 F Water Pressure 20 to 120 psig WaterConsumption DependentonWaterPressure 6to10gallonsper4hours Hidden Electronic Controls allow for a fully integrated look Clean Sensor with LED Indicator Lighted Bin with Ice Scoop Reversib...

Страница 6: ...perating systems in the icemaker Electrical System Refrigeration System Water System Electrical System The icemaker s electrical system provides power for the refrigeration and water systems and controls the operation of each component Continued next page ...

Страница 7: ...s the condenser and flow through the condenser accumulator tube Hot gas pushes liquid refrigerant through 2 the condenser accumulator tube into the evaporator helping to evenly heat the evaporator plate so that the ice slab releases quickly and evenly Heat Exchanger Condenser Accumulating Tube Path of warm liquid refriger ant pushed by high pres sure refrigerant gas Evaporator Condenser Drier Suct...

Страница 8: ...erals and contaminates The hardness of the water supplied to the icemaker will affect the quality of the ice that is produced It may also affect the operation of the water system A water softener or poly phosphate feeder will not cure all of the problems associated with hard water but they can be used to reduce scale buildup in the icemaker Water System Component Locations Manual Drain Drain Overf...

Страница 9: ...Service Diagnostics 4 Ice Making Cycle Freeze Mode There are 3 possible Off cycles for the icemaker They occur when The bin is full of ice and the ON LED is 1 illuminated Idle Mode The OFF control pad has been held for 3 sec 2 The ON LED will go out The power is interrupted by overfill Model ZPK1 3 only with internal drain pump Electrical System Line voltage is supplied to the electrical control s...

Страница 10: ... the unit on Customer instructions for Clean Cycle are on the inside of the door Harvest Mode Electrical System When the water level in the reservoir drops below the water level sensor it signals the electronic control to terminate power to the condenser fan and then the water recirculating pump The reservoir drain pump is activated on for 20 sec off 20 sec back on for 20 sec to fully drain the re...

Страница 11: ...ol board turns all components off The CLEAN LED remains on with reservoir full Refrigeration System The compressor and hot gas valve operate to heat the evaporator The evaporator thermistor will cycle the compressor off at 125 F and on at 95 F Water System When the icemaker is in the CLEAN mode the water recirculating pump circulates the cleaning solution that has been added to the reservoir up to...

Страница 12: ...from the majority of water sources on a daily basis If your results are unsatisfactory your water may need to be filtered or treated Making Ice Water is constantly circulated over a freezing 1 plate As the water freezes into ice the minerals in the water are rejected This produces a clear sheet of ice with a low mineral content When the desired thickness is reached the ice 2 sheet is released and ...

Страница 13: ...ies Order part number WX08X42870 In the U S A call 1 800 626 2002 or visit Monogram com In Canada call 1 800 561 3344 The CLEAN light will eventually turn red which means the icemaker must be cleaned otherwise ice production will decrease significantly or stop altogether IMPORTANT For best results use the entire contents of the bottle to clean the unit See Icemaker System The air cooled condenser ...

Страница 14: ...n the icemaker is connected to a reverse osmosis water system Cleaning the Condenser For best performance brush or vacuum lint and dirt from the condenser at least once a year A dirty or clogged condenser Uses more energy Prevents proper airflow Reduces ice making capacity Causes higher than recommended operating temperatures which may lead to component failure Unplug the icemaker or disconnect po...

Страница 15: ...ing the airflow through the condenser See Care and Cleaning Condenser Scale has built up in the icemaker If there is white scale buildup in the icemaker s water or freezing system you should clean the icemaker See Care and Cleaning Icemaker System Water is leaking from the water reservoir because the drain cap is not secure Make sure the drain cap is securely tightened Refer to illustration in Car...

Страница 16: ...r Condenser Condenser Accumulator Tube Push button Switch Reservoir Drain Pump Water Recirculation Pump Water Level Sensor Measured F1 Water Valve Electronic Control Board Compressor Cutter Grid Light Switch Bin Thermistor The evaporator thermistor is located on tubing below the evaporator Continued next page ...

Страница 17: ...r Return Tube From Water Supply Evaporator Reservoir Drain Pan Water Level Sensor Water Recirculation Pump Water Valve Outlet Tube Reservoir Pan Bin Drain Water Distributor Measured Fill Water Inlet Valve Water System Component Locations ...

Страница 18: ...a 917 auto type 12V and can be purchased locally Cutter Grid Cover Door and Gasket Note If unit has a handle attached to the top of the door it must be removed to access the hinge screw To remove the door remove the large screw from the top of the icemaker door pull the door open and lift the door off the bottom hinge Note Be sure to check the new gasket for a proper seal after it is installed To ...

Страница 19: ...of the cutter grid cover and pull the cover from the ice machine Disconnect the cutter grid and bin thermistor 2 connectors from the bottom of the control housing Remove the 2 hex head screws from both sides 3 of the cutter grid Note that the longer screw and white spacer are on the right side Note Take care not to scratch the icemaker liner Slide the cutter grid forward and out of the unit 4 and ...

Страница 20: ...stor When installing snap the thermistor onto the 5 evaporator tubing behind the accumulator Unsnap the 2 ice guides if necessary from 6 the cutter grid tabs There should be a slight outward tilt after the guides are installed Bend the metal tabs outward if necessary 7 Ice Guide Ice Guide Water Distributor Remove the cutter grid from the unit See 1 Cutter Grid Pull out on the left and right water ...

Страница 21: ... from the 1 board terminals Remove the 2 mounting screws and remove the 2 electronic control board To Remove the Dual Transformer Disconnect the 6 pin wire connector from the 1 harness Remove the 2 mounting screws from the 2 transformer bracket Disconnect the green ground wire from its 3 terminal To Remove the Light Switch Push Button Assembly Note If the switch assembly or light switch is replace...

Страница 22: ...d replace the cap tightly Remove the hex head screw from the water 2 recirculation pump shield and remove the shield Disconnect the water fill tube from the pump 3 mounting bracket Disconnect the wire recirculation and drain 4 pump connectors from the harness block Drain Cap Disconnect Disconnect Water Fill Tube Disconnect the Molex plug from switch 2 assembly Press the back of switch assembly and...

Страница 23: ...maker Outlet Tube Water Level Sensor Remove the ice from the storage bin prior to removing the recirculation pump To remove the water level sensor Remove the hex head screw from the water 1 recirculation pump shield and remove the shield See Water Recirculation Pump Disconnect the water level sensor electrical 2 connection Remove the retaining clips if present 3 Pull the sensor up and out of the b...

Страница 24: ...f the way 5 Measured Fill Water Valve Continued next page Reservoir Drain Pump Remove the ice from the storage bin prior to removing the recirculation pump Note Pump operates on 12VAC and has a resistance of 3 8Ω To remove the reservoir drain pump Unscrew the drain cap from the reservoir drain 1 the water and replace the cap tightly Remove the recirculating pump cover hex head 2 screw Disconnect t...

Страница 25: ...s on the condenser fan motor shroud and secure the cabinet so that it cannot tip forward or backward Disconnect the wire connector from the 10 condenser fan motor Remove the 4 screws 2 bottom and 2 side 11 from the condenser fan motor shroud Slide the shroud assembly back towards the compressor and then lift and remove the assembly from the unit Remove condenser fan motor blade by pulling 12 the f...

Страница 26: ...lve To remove the measured fill water valve Turn the water supply off to the icemaker 1 Remove the 4 hex head screws from the front 2 panel and remove the panel Remove the 2 hex head screws from the 3 measured fill water valve bracket Measured Fill Water Valve Note Place a pan or towel under the valve to catch the water Disconnect the water inlet and outlets tubing 3 from the quick disconnect fitt...

Страница 27: ... Valve To remove the hot gas valve Remove the solenoid from the hot gas valve 1 See Hot Gas Solenoid Access the sealed system and discharge the 2 refrigerant into an approved recovery system Unbraze the hot gas valve from the tubing 3 Caution When installing the new hot gas valve use a generous amount of thermal heat trap paste between the valve and tubing joints to protect the valve when brazing ...

Страница 28: ...and discharge the 11 refrigerant into an approved recovery system Cut the suction and discharge lines from the 12 compressor Caution Do not use a torch to remove the drier filter Cut the drier filter from the system 13 Unbraze the compressor suction and discharge 14 joints from the tubing Pull the clips off the compressor mounting studs 15 Lift the compressor off the 4 mounting studs 16 and remove...

Страница 29: ...of the control housing Remove the two 5 16 in hex head screws from 6 the top hinge and remove the hinge Remove the 2 front and 2 rear screws from the 7 cabinet top Condenser To remove the condenser Unplug ice maker or disconnect power 1 Tip the front of the cabinet back and prop it up 2 Remove the 4 condenser fan motor screws from 3 the fan motor shroud Pull the motor assembly back away from the c...

Страница 30: ...ut on the left and right water distributor 13 retainers and remove the tabs from the slots in the evaporator Disconnect the hose from the water distributor 14 and remove the water distributor Remove the 4 Phillips head screws from the 14 evaporator and then carefully lift the evaporator just high enough to remove the 2 right spacers Lift the cabinet top and position it forward on 8 top of the unit...

Страница 31: ...or from the tubing 17 at the following locations Suction line at the compressor Hot gas line at the hot gas valve Cut the capillary tube at the drier filter Lift the evaporator and its connecting tubing 15 high enough from the unit to access the tubing underneath Suction Line Hot Gas Joint Valve Drier Filter Capillary Tube ...

Страница 32: ...sor Run the service mode Check for the proper operation of the water level sensor The Service LED should stay on solid when the water level sensor is immersed in water When the water level sensor is out of the water the Service LED should blink Hot Gas Valve Solenoid Leads are 365 Ω to 390 Ω at 120 VAC Measured Fill Water Valve Run the service mode The connector with black and white wires should r...

Страница 33: ... 33 Board Connectors See Page 40 See Page 40 See Page 40 See Page 32 See Page 32 See Page 32 See Page 32 Continued next page ...

Страница 34: ... 34 Component Connectors See Page 32 See Page 40 See Page 40 See Page 40 See Page 32 ...

Страница 35: ... the water level sensor At this point the control terminates the freeze mode and initiates the Harvest Mode Control Board Diagnostics Harvest Mode The time in this mode will be 2 to 17 minutes dependent on the condition of the evaporator thermistor The compressor and hot gas valve is on for a minimum of 1 minute Note There is a 4 min fixed cycle time if the evaporator thermistor is disconnected or...

Страница 36: ...end of each Freeze Mode Harvest Modes and Idle Mode Clean Mode Note The customer instructions for clean cycle is on the inside of door The Clean Mode may only be selected while the icemaker is turned off OFF pad held 3 sec at the user interface Clean Mode is a 70 minute cycle When Clean Mode begins The CLEAN light flashes 1 sec on 1 sec off The circulation pump compressor and hot gas valve are ene...

Страница 37: ... 37 o o Troubleshooting Continued next page ...

Страница 38: ... is cold with thin partial irregular or no ice slab Blocked condenser or stalled fan motor Clean condenser repair or replace motor Tube not attached to outlet of recirculating pump Re attach tube Defective recirculating pump Repair or replace the pump motor assembly Partially blocked water distributor Clean distributor and evaporator Compressor is not running Test compressor relay and overload Wil...

Страница 39: ...orator plate See procedure on 4 21 Grinding cavitating sound from recirculation pump If the reservoir is full replace the pump Noisy drain pump Repair or replace Ice freezing together in the bin Normal This is normal with low customer usage Cloudy poor tasting ice Poor water quality See chart on 4 2 4 3 Off LED flashing 2 blinks Open or disconnected bin thermistor or thermistor wiring Test thermis...

Страница 40: ...pad to advance Bin Thermistor On Solid OK 2 Blinks Open 4 Blinks Short Off Off 2 Off pad to advance Evaporator Thermistor Off Off On Solid OK 2 Blinks Open 4 Blinks Short 3 Off pad to advance Water Valve 4 Minute Timeout Clean Button Press Will Advance to Step 6 Off Blinking Reservoir Empty On 3 Continued sensor check Water Level Sensor Off On confirms sensor operation On 4 Off pad to advance Reci...

Страница 41: ...in pump is connected to a 120 VAC wall outlet The icemaker is then connected to the 120 VAC outlet on the drain pump If the drain pump fails or if the drain becomes blocked power is shut off to the 120 VAC outlet on the drain pump When the unit is first plugged in the drain pump will run for 20 sec The power can be disconnected and reconnected to verify that the pump is operating properly Water fr...

Страница 42: ... 42 Schematics and Strip Circuits Refer to the mini manual attached to the unit Continued next page ...

Страница 43: ...Rd Overload Compressor Relay Bk Bk Rd Wh Transformer Rd Electronic Control Condenser Fan Water Recirculation Pump Overload Bu Or GY Wh Wh Rd Bk Compressor Relay Clean Mode Strip Circuit Bk Wh Transformer BK Rd Bk Electronic Smart Valve Electronic Smart Valve Water Valve Electronic Control Water Valve Water Recirculation Pump Reserve Drain Pump Bu Bu Yl GY Timing Fill Reservoir or Time 2 Min Time 1...

Страница 44: ...ing system the compressor condenser evaporator and all connecting tubing that fails because of a manufacturing defect This warranty is extended to the original purchaser and any succeeding owner for products purchased for ordinary home use in the 48 mainland states Hawaii Washington D C or Canada If the product is located in an area where service by a GE Authorized Servicer is not available you ma...

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