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– 54 –

NOTE:  The thermistor’s resistance has a negative coefficient.  As the temperature increases, the
thermistor’s resistance decreases.

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Содержание PSC21MGM

Страница 1: ......

Страница 2: ...ersonal 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 RECO...

Страница 3: ...Specifications 4 Nomenclature 5 Warranty Information 6 Operating Characteristics 7 General Locator Views 14 Mechanical Disassembly 16 Diagnostics 32 Component and Connector Locator Views 55 Schematics...

Страница 4: ...rature setpoint type and have settings of 0 9 with 9 being the coldest temperature possible The new NO CLEAN condenser is serviceable from the rear and is designed to prevent the customer from having...

Страница 5: ...ates with a standard three prong grounding wall receptacle to minimize the risk of electric shock hazard from this appliance The customer should have the wall receptacle and circuit checked by a quali...

Страница 6: ...or Capacity 22 inches Minimum Equalized Pressure 70 F 48 PSIG 90 F 60 PSIG IMPORTANT SAFETY NOTICE This information is intended for use by individuals possessing adequate backgrounds of electrical ele...

Страница 7: ...CONTRACT DERIVATIVE X REGIONAL DERIVATIVE ICEMAKER EXTERIOR B NON DISPENSER ICEMAKER READY D CUBED ICE WATER E CUBED CRUSHED ICE WATER F 6 MO FILTER CUBED CRUSHED ICE G 1 YR FILTER CUBED CRUSHED ICE I...

Страница 8: ...a d e h t m o r F e s a h c r u p l a n i g i r o t r a p y n A s l i a f h c i h w e g d i r t r a c r e t l i f r e t a w g n i d u l c x e r o t a r e g i r f e r e h t f o s i h t g n i r u D p i...

Страница 9: ...Cooling Operation Adaptive Defrost 9 Pre Chill Operation Adaptive Defrost 9 Defrost Heater Operation Adaptive Defrost 9 Dwell Period Adaptive Defrost 9 Post Dwell Adaptive Defrost 9 Liner Protection...

Страница 10: ...8 degrees of temperature change per minute as determined by resistance change of sensor Abnormal Operating Characteristics Incorrect Operation Fresh food fan on and evaporator fan off Evaporator fan o...

Страница 11: ...After the 5 minute dwell period the unit goes into post dwell Post Dwell Adaptive Defrost The post dwell period is designed to cool the evaporator before circulating air within the refrigerator This p...

Страница 12: ...tored in the event of a power failure Door Alarm The DOOR ALARM pad is used to turn on and turn off the door alarm feature If the feature is on the DOOR ALARM LED will flash when the door is opened If...

Страница 13: ...loaded arm located at the bottom of the cabinet for each door The arm provides a stop for the door when the door is partially open and automatically closes the door when the door is almost closed IMP...

Страница 14: ...located at one end of the jelly roll condenser and a solid plate is located at the other end Air is drawn in through the outside diameter of the condenser and pulled out by the condenser fan The cond...

Страница 15: ...J6 K7 PAN HTR K6 WATER AUGER K1 C CR K2 K4 COMP J4 1 8 J7 DEFROST COOLING PRE CHILL DEFROST HEATER ON TIME MINUTES COMPRESSOR RUN TIME MINUTES ACCUMULATED FF AND FRZ DOOR OPENINGS MINUTES THERMISTOR...

Страница 16: ...ture Controls Temperature Controls Damper Damper Fresh Food Thermistor Thermistor Fresh Food Thermistor Freezer Light Switch Freezer Light Switch Evaporator Fan Evaporator Fan Evaporator Thermistor Th...

Страница 17: ...ntrol Board Jelly Roll Condenser Jelly Roll Condenser Compressor Compressor Overload and Relay under cover Overload and Relay under cover Dryer Dryer Capacitor Capacitor Condenser Fan Condenser Fan Wa...

Страница 18: ...ompartment Drawers 19 Fresh Food Compartment Lights 19 Water Filter 20 Fresh Food Fan and Mullion Damper 20 Deli Fresh Damper 21 Fresh Food Thermistors 21 Temperature Control Panel 22 Freezer Door Bin...

Страница 19: ...Light 26 Evaporator Fan 26 Evaporator Thermistor 27 Defrost Thermostat 27 Defrost Heater 27 Evaporator Drip Pan 28 Evaporator 28 Freezer Thermistor 28 Condenser Fan 29 Main Processor Card 29 Water So...

Страница 20: ...ull in an outward motion until the molded gasket separates from the door liner Fresh Food Compartment Quick Access Door The fresh food compartment allows access to the fresh food compartment without o...

Страница 21: ...er items and pull out for easy access 1 Pull the shelf out until the shelf stop tab meets the compartment stop 2 Push the shelf stop tab down and pull the shelf out until it is removed GEA00928 Fresh...

Страница 22: ...terclockwise and pull it down 2 To install the filter push it up while turning 1 2 turn clockwise Do not force the filter Fresh Food Fan and Mullion Damper The fresh food compartment fan is located un...

Страница 23: ...nst the compartment and open the back cover 10 Disconnect the wire connections and remove the damper or fan Deli Fresh Damper The deli fresh damper is located at the bottom of the cold air ductwork It...

Страница 24: ...located at the lower left and right hand corners of the card 7 Remove the card Freezer Door Bins The freezer door bins are located on the inside of the freezer door and tilt out to allow easy access...

Страница 25: ...table The fresh food door can be adjusted to match the height of the freezer door IMPORTANT The refrigerator rollers must be adjusted correctly to ensure proper door closure Refer to the Roller Adjust...

Страница 26: ...ion of the freezer compartment and sends a signal to the processor 1 With a small flat blade screwdriver unlock the locking tabs and pull the switch out until the wire connector is visible 2 Disconnec...

Страница 27: ...in housing mounting screws 4 located at the four corners of the housing 2 Slide the housing forward until the connector is visible disconnect the connector and remove the unit from the housing GEA009...

Страница 28: ...emaker bracket screws 4 located at the four corners of the bracket GEA00957 Screws Screws 2 Remove 1 4 in ice dispenser drive mounting bracket screws 2 and remove the brackets GEA00958 Screws Screws 3...

Страница 29: ...to the top portion of the evaporator The thermostat sends temperature information to the processor The defrost heater must be replaced when replacing the thermostat 1 Remove the lower fan duct work fr...

Страница 30: ...ube the capillary tube must be desoldered first 6 Desolder the capillary tube from the evaporator 7 Desolder the suction line Use a pair of pliers to hold the evaporator 8 Remove the evaporator 9 With...

Страница 31: ...or to the card or the card will be destroyed 1 Secure power to the unit 2 Remove the 1 4 in processor card panel screws 10 and remove the panel 3 Disconnect the processor cable connectors 4 Remove the...

Страница 32: ...30 Notes...

Страница 33: ...31 Notes...

Страница 34: ...ezer Normal diagnostic chart 45 Freezer Warm Fresh Food Normal diagnostic chart 46 Compressor Not Running diagnostic chart 47 Damper Door Not Opening or Not Closing diagnostic chart 48 Condenser Fan N...

Страница 35: ...mber in s e s u a C e r u l i a F 1 e l b a T t n e m t r a p m o C r e z e e r F t n e m t r a p m o C d o o F h s e r F 5 1 e v o b A o t i e h n e r h a F r o t s i m r e h t r e z e e r f e c n a...

Страница 36: ...e 1 5 to completely reset the system Enter code 1 6 to exit diagnostic mode The temperature control panel is reset automatically Unplug the refrigerator for at least 10 seconds Test mode will terminat...

Страница 37: ...f i y a l p s i d Z F e h t n o P K O t o n f i y a l p s i d Z F e h t n o F 0 4 l o r t n o c n i a m o t d r a o b r e s n e p s i D n o i t a c i n u m m o c d r a o b K O f i y a l p s i d Z F e...

Страница 38: ...the display If the unit is not equipped with the Quick Chill option the third thermistor quick chill will display a 0 and 3 audible beeps will sound at the temperature control panel This is not a fai...

Страница 39: ...S ACCUMULATED FF AND FRZ DOOR OPENINGS MINUTES THERMISTOR INPUTS ENCODER INPUTS MODEL SELECT COMMUNICATION INPUT OUTPUT DAMPER COILS FAN OUTPUTS INPUTS PROCESSING UNIT 1 Blk 2 Red 3 Blu 4 Pur 5 Wht 1...

Страница 40: ...7 Red 8 Not Used 9 Orn GEA00907 PAN_HTR AUGER N DFZ DFF OCH COMMON WATER CRUSHER QC K5 DEFROST K3 L1 COMP J8 J9 J4 J12 DEFR LINE 2 1 J6 K7 PAN HTR K6 WATER AUGER K1 C CR K2 K4 COMP J7 DEFROST COOLING...

Страница 41: ...n i p 1 J 2 J 1 e u l B n a f r o t a r o p a v E r e t e m o h c a t C D V 3 6 3 n i p o t 1 n i p 2 J 2 J 2 e t i h W e u l B t u p n i n a F C D V 2 1 3 n i p o t 2 n i p 2 J 2 J 3 e t i h W n o m...

Страница 42: ...V 0 6 e g a t l o V g n i l e v a r T 3 J 3 n w o r B e t i h W r e p m a D 3 n i p 4 J o t 3 n i p 3 J C D V 3 2 e g a t l o V g n i d n a t S C D V 0 6 e g a t l o V g n i l e v a r T 3 J 4 w o l l...

Страница 43: ...v l a v r e t a W C A V 0 2 1 9 n i p 7 J o t 3 n i p 7 J 7 J 4 e t i h W d e R k c o l r e t n i r o t o m r e g u A C A V 0 2 1 9 n i p 7 J o t 4 n i p 7 J 7 J 5 e t i h W e u l B r e t a e h l l i...

Страница 44: ...teps in thermistor test to determine problem No Repair wire and connection at 6 pin connector Yes Check dispenser and temperature control lights Do they work Yes No Unplug J2 connector from control bo...

Страница 45: ...r fan running Is the compressor running Is the evaporator fan running Is the airflow within the freezer normal Run Service Diagnostics Test 1 4 Defrost system check see page 52 No Heavy Frost Go to Co...

Страница 46: ...ycle Run service diagnostic test 1 0 Damper test see page 48 No Is the Fresh food fan running Run service diagnostic test 1 1 Fan test see page 51 No Yes Is the airflow within the Fresh Food normal Ye...

Страница 47: ...e adjustment Low ambient Is the room temperature must be above 55 F Control settings OK Advise consumer of refrigerator specifications No Is damper closed Yes Go to Damper flowchart page 48 Damper sho...

Страница 48: ...al Yes Look for blockage at vents or heavy frost on evaporator cover No Blockage Run Service Diagnostics Test 1 4 Defrost system check see page 52 Check sealed system Normal frost pattern on evaporato...

Страница 49: ...heck temperature setting of unit Yes Check for 120VAC at connector J7 9 orange wire to TAB1 J11 Black wire Do you have 120VAC Direct test the compressor Did it start Replace compressor Yes No Check wi...

Страница 50: ...00 ohms J3 1 to J3 2 400 ohms J3 3 to J3 4 Check for same resistance values at damper motor No Damper motor defective replace motor No Unplug refrigerator then power up Check for 6VDC from J3 1 to J3...

Страница 51: ...e approximatelty 1 5K ohms to 3K ohms Does the condenser fan motor read open Does the condenser fan motor read shorted below 1K ohm Replace the condenser fan motor Repair wiring harness Check for volt...

Страница 52: ...voltage at main board J2 Is there at least 12 VDC between pins 3 and 8 Yes Replace fan motor Yes Replace main board and fan motor No Repair wiring harness Yes Check wiring to Evaporator fan motor Chec...

Страница 53: ...Measure the resistance directly at the fan motor Is the resistance approximatley ohms No Repair wiring harness Yes Does the fan motor read open Replace FF fan motor Yes No Does the FFfan motor read sh...

Страница 54: ...in board Is 120 VAC present Yes Run Service Diagnostic Test 0 7 for thermistors Do thermistors pass test Check door ajar Customer usage numerous door openings Yes Repair wiring connections or replace...

Страница 55: ...test show O open sensor No Check wiring connections for an open circuit If OK replace thermistor Yes Verify thermistors are within proper range using temperature resistance chart on page 54 Yes Repla...

Страница 56: ...s e e r g e D e r u t a r e p m e T F s e e r g e D o l i K n i e c n a t s i s e R s m h O 0 4 0 4 k 8 6 6 1 5 3 1 3 k 5 0 2 1 0 3 2 2 k 8 8 5 2 3 1 k 5 6 0 2 4 k 4 8 4 5 1 5 k 4 6 3 0 1 4 1 k 6 7 2...

Страница 57: ...aporator Fan Evaporator Fan Freezer Thermistor Freezer Thermistor Defrost Thermostat Defrost Thermostat Light Light Freezer Light Switch Freezer Light Switch Evaporator Thermistor Evaporator Thermisto...

Страница 58: ...56 GEA00980 Fresh Food Light Switch Fresh Food Light Switch Damper Damper Fresh Food Lights Fresh Food Lights Fresh Food Thermistor Fresh Food Thermistor...

Страница 59: ...ntrol Board Jelly Roll Condenser Jelly Roll Condenser Compressor Compressor Overload and Relay under cover Overload and Relay under cover Dryer Dryer Capacitor Capacitor Condenser Fan Condenser Fan Wa...

Страница 60: ...RMISTOR INPUTS ENCODER INPUTS MODEL SELECT COMMUNICATION INPUT OUTPUT DAMPER COILS FAN OUTPUTS INPUTS PROCESSING UNIT 1 Blk 2 Red 3 Blu 4 Pur 5 Wht 1 Yel 2 Red Blk 3 Wht Brn 4 Blu Yel 1 Blu Red 2 Yel...

Страница 61: ...FZ DFF OCH COMMON WATER CRUSHER QC K5 DEFROST K3 L1 COMP J8 J9 J4 J12 DEFR LINE 2 1 J6 K7 PAN HTR K6 WATER AUGER K1 C CR K2 K4 COMP J7 DEFROST COOLING PRE CHILL DOOR SWITCH INPUTS COMPRESSOR DEFROST O...

Страница 62: ...60 Thermistor Locator GEA00765 J4 J3 J1 Evaporator Thermistor Located on Evaporator Freezer Thermistor Fresh Food Thermistors...

Страница 63: ...61 Schematics...

Страница 64: ...62...

Страница 65: ...63 Illustrated Parts Catalog Exploded views of PSS25MGMABB are for general reference Always refer to specific model for latest part information...

Страница 66: ...64...

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Страница 70: ...68 Ref No Part Number Description 228 WR85X10022 Low Side Assembly...

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