Whirlpool Kitchen Aid KAR-19 Service Manual Page 65
- Page / 76
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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6-3
TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSE TEST PROCEDURE-ACTION
No DC control voltage from main
PCB to the inverter board.
See "Component Testing" section for main PCB test procedure.
Control voltage wires loose or
reversed.
Check connections and repair as needed.
Compressor. See "Component Testing" section for compressor/inverter test procedure.
Inverter board. See "Component Testing" section for compressor/inverter test procedure.
Refrigerator control set too
warm.
Set to a lower temperature.
Refrigerator thermistor.
Check wires and connectors. Run diagnostics and if a defective thermistor is
indicated, confirm with ohms test. See "Com
p
onent Testin
g
".
Air door stuck closed or
ino
p
erative.
Look for ice or other blockage in air door. Run diagnostics test to operate air
door.
Evaporator fan motor not
running.
Run diagnostics test to operate the evaporator fan motor. Check for a
blocked fan blade and repair as necessary. Check for 5-17vdc from pin P7-9
to P7-10. If volta
g
e is correct, re
p
lace the motor.
Blocked air flow. Check air door outlet and air returns for blockage.
Warm freezer compartment. See "Freezer compartment too warm."
Refrigerator control set too cold. Set to a higher temperature.
Refrigerator thermistor.
Check wires and connectors. Run diagnostics and if a defective thermistor is
indicated, confirm with ohms test. See "Com
p
onent Testin
g
".
Air door stuck open or
inoperative.
Look for ice or other blockage in air door. Run diagnostics test to operate air
door. Check for proper DC input voltage. If voltage is normal and door will
still not o
p
erate, re
p
lace air door.
Air door seal missing or damaged. Repair or replace seal.
Main PC board. Run diagnostics test to operate air door.
Freezer control set too warm. Set to a lower temperature.
Freezer thermistor.
Check wires and connectors. Run diagnostics and if a defective thermistor is
indicated, confirm with ohms test. See "Com
p
onent Testin
g
".
Evaporator fan motor not
running.
Run diagnostics test to operate the evaporator fan motor. Check for a
blocked fan blade and repair as necessary. Check for 5-17vdc from pin P7-9
to P7-10. If volta
g
e is correct, re
p
lace the motor.
Condenser fan motor not running.
Check for a blocked fan blade and repair as necessary. See "Component
Testin
g
" section for condenser fan motor test
p
rocedure.
Frost blocking evaporator.
Run diagnostics test to operate defrost system. Test defrost heater and bi-
metal.
Freezer control set too cold. Set to a higher temperature.
Refrigerator operating in the
Max Cool or Automatic Max Ice
Mode (see page 3-5).
Normal operation.
Freezer thermistor.
Check wires and connectors. Run diagnostics and if a defective thermistor is
indicated, confirm with ohms test. See "Com
p
onent Testin
g
".
No evaporator fan motor
feedback.
The fan motor will run at 3000 rpm.
Main control board is over
tem
p
erature.
Look for blocked condenser air flow or inoperative condenser fan motor.
Refrigerator over 48°F or
freezer over 15°F for 3 hours.
Run diagnostics and test operation of all components.
Both thermistors failed. Run diagnostics and test thermistors and thermistor leads.
No feedback from evaporator fan
motor.
Run diagnostics and test fan motor and/or wiring.
Refrigerator runs
too long.
Normal.
It is designed for this refrigerator to run almost constantly at the lowest
possible compressor speed. Starting and stopping the compressor uses
more
p
ower than continuous low r
p
m o
p
eration. Instruct customer.
Unit is set for Holiday Mode. Press the Holiday Mode key to cancel operation.
Either door open for over 10
minutes.
Close door and/or check door switches.
No temperature display,
no interior lights.
"Call Service" icon lights
and/or alarm is activated.
Condenser fan runs
but the compressor
will not start.
Freezer
compartment
too warm.
Freezer
compartment
too cold.
Refrigerator
compartment
too cold.
Refrigerator
compartment
too warm.
- JOB AID 4317326A 1
- GOALS AND OBJECTIVES 2
- TABLE OF CONTENTS 3
- SAFETY FIRST 5
- ELECTROSTATIC DISCHARGE 6
- (ESD) SENSITIVE ELECTRONICS 6
- ANTI-TIP 6
- REQUIREMENTS 6
- MODEL NUMBER 7
- SERIAL NUMBER 7
- AND TECH SHEET LOCATIONS 8
- SPECIFICATIONS 9
- KITCHENAID 12
- INSTALLATION INFORMATION 13
- 1. Stud location 14
- WATER SUPPLY REQUIREMENTS 15
- ANTI-TIP BOARDS 15
- LOWERING THE LEVELING LEGS 16
- LEVELING THE REFRIGERATOR 16
- ADJUSTING THE DOORS 16
- 1. Mounting screws 17
- 1. Locking plate 17
- 2. Door stop screw 17
- 3. Bushing 17
- THEORY OF OPERATION 19
- TEMPERATURE CONTROL 20
- ADAPTIVE DEFROST 22
- PULSED DEFROST 22
- POWER INTERRUPTION 22
- FAILURE DEFAULTS 22
- OVER-TEMPERATURE ALARM 24
- CALL SERVICE ALARM 24
- DOOR OPEN ALARM 24
- SALES DEMONSTRATION MODE 24
- AIR CIRCULATION 25
- SEALED SYSTEM SCHEMATIC 26
- COMPONENT ACCESS 27
- Main Decorative Panel 28
- Louvered Decorative Panel 28
- Air Diverter & 2 Screws 28
- THE INVERTER ASSEMBLY, AND 30
- Wire Connectors 33
- Screws At Rear Of Enclosure 33
- Press Locking Tab 33
- On Standoff 33
- & THE MOTORIZED AIR DOOR 40
- Motorized Air Door Cover 41
- Wire Connector 41
- REMOVING THE ICE MAKER AND 42
- REMOVING A THERMISTOR 44
- REMOVING A LIGHT SOCKET 45
- REMOVING THE WATER RESERVOIR 46
- REMOVING THE WATER VALVE 48
- Drip Tray 49
- Bottom Channel 49
- Top Channel 49
- Wood Block 49
- REMOVING A DOOR GASKET 51
- Base Grille 52
- Leveling Screws 52
- Rear Front 52
- COMPONENT TESTING 55
- CONDENSER FAN MOTOR 56
- EVAPORATOR FAN MOTOR 56
- Inverter 57
- MOTORIZED AIR DOOR 58
- DEFROST HEATER & BIMETAL 58
- MAIN CONTROL BOARD 59
- CRUSH/CUBE SOLENOID 60
- ICE MAKER AUGER MOTOR 60
- DOOR SWITCH 61
- WATER VALVE SOLENOID 61
- — NOTES — 62
- DIAGNOSIS 63
- WATER FILTER INPUT (WFI) TEST 64
- DIAGNOSTICS CHART 64
- TROUBLESHOOTING CHART 65
- WIRING DIAGRAM—BOTTOM MOUNT 67
- OPTIONAL 68
- DISPENSER 68
- MODELS ONLY 68
- STRIP CIRCUITS 69
- DEFROST CYCLE 70
- REFRIGERATOR LIGHT 71
- FREEZER LIGHT 71
- PRODUCT SPECIFICATIONS 75
- WARRANTY INFORMATION SOURCES 75
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