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Troubleshooting Guides
TROUBLESHOOTING GUIDES
This section of the manual contains:
• The Error Code Table and Error Code Troubleshooting Guide.
• The General Troubleshooting Guide, which covers all problems that an ICB700 Series Tall unit may experience.
• The Membrane Switch/Ribbon Cable Test Procedures, used to determine if a control panel assembly is defective.
• The Door Hinge Test Procedures and Corrections explain how to test and correct door closing problems.
HOW TO USE THE ERROR CODE TROUBLESHOOTING GUIDE
Error Codes are logged for thermistor errors, and/or defrost system errors. If Error Codes are logged, they will
appear when Diagnostic Mode is initiated.
NOTE:
If Error Codes appear with a flashing "SERVICE" indicator prior to initiating Diagnostic Mode, the unit expe-
rienced excessive compressor run condition that may or may not be associated with the Error Codes displayed.
To initiate Diagnostic Mode, press and hold either COLDER key, then press the POWER key, then release both
keys. Now, check to see if Error Codes are present, being sure to toggle through all error and temperature readings
by pressing either COLDER key or either WARMER key. (See Error Code Table Below)
If Error Codes appear, follow the Error Code Troubleshooting Guide on the following page. The left column of the
troubleshooting guide lists the error codes. The information in the right column explains what tests to perform and/or
what action to take to correct the error.
NOTE:
If error codes are observed in diagnostic mode, a non-flashing SERVICE indicator will appear on the LCD
when Diagnostic Mode ends indicating error codes are still stored. Error Codes must be manually cleared from the
electronic control memory. To clear the non-flashing SERVICE indicator and the error codes, the problem must be
corrected and the unit must be ON. Then, press and hold the ALARM key for fifteen (15) seconds. The control will
emit a short "beep" when the SERVICE indicator and error codes are cleared.
CODE INDICATION
05
Refrig. cabinet thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp's
06
Refrig. evaporator thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp's
07
Freezer cabinet thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp's
08
Freezer evaporator thermistor read open or shorted for 10+ seconds, or repeatedly read erratic temp's
20
Defrost under-heat with no voltage feedback through Gray/White wire at defrost start
21
Defrost overheat
22
No voltage feedback through Gray/White wire at defrost start
23
Defrost overheat with no voltage feedback through Gray/White wire at defrost start
24
Defrost Under-heat
30
Excessive Icemaker Water Valve Solenoid Activation (Exceeded 15 Seconds)
40
Excessive Freezer Compressor Run
50
Excessive Refrigerator Compressor Run
7005836 - Revision A - January, 2009
International Integrated
International Integrated
Error Code Table
8-2
Series
Series
(ICB700 T
all)
(ICB700 T
all)
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Table of Contents
Related Manuals for Sub-Zero ICB700 T Series
Summary of Contents for Sub-Zero ICB700 T Series
- Page 1 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) TROUBLESHOOTING GUIDES This section of the manual contains: • The Error Code Table and Error Code Troubleshooting Guide. • The General Troubleshooting Guide, which covers all problems that an ICB700 Series Tall unit may experience. •...
- Page 2 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) ERROR CODE TROUBLESHOOTING GUIDE ERROR CODE TEST / ACTION A. Check refrigerator compartment thermistor electrical connections and continuity from thermistor to J1 on control board. Reconnect / repair connections. B.
- Page 3 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) ERROR CODE TROUBLESHOOTING GUIDE ERROR CODE TEST / ACTION A. Check for jammed cube in icemaker. B. Reference wiring diagram to identify components in same White wire circuit as water valve solenoid. Check all White wire electrical connections and continuity from water valve solenoid to J7-8 on control board.
- Page 4 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) HOW TO USE GENERAL TROUBLESHOOTING GUIDE The General Troubleshooting Guide Table of Contents on the following page indicates how the General Trouble Shooting Guide is arranged. Match the description of the problem the unit is experiencing with those in the table. To the left of the problem description is a letter.
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Page 5: Table Of Contents
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) GENERAL TROUBLESHOOTING GUIDE TABLE OF CONTENTS Ltr Problem Description Page # Error Codes and “SERVICE” Flashing ..........................8-7 “EE” Displayed in Place of Freezer Temperature with “SERVICE” Flashing ............... 8-7 C. -
Page 6: Error Codes And "Service" Flashing
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION A. Error Codes & “SERVICE” Unit Experienced Temperature Problems See Error Code Troubleshooting Guide Flashing B. “EE” Displayed in Place of Freezer Compartment Thermistor Check wiring from thermistor to control Freezer Temperature with... - Page 7 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Light ON with Door/ Drawers Closed G. Warm Freezer Temperature a. Top hinge cover missing, not depress- a. Replace hinge cover. with “SERVICE”...
- Page 8 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION H. Warm Freezer Temperatures No Power to Unit Check power to unit, plug unit in or switch without “SERVICE” Flashing supply circuit breaker ON.
- Page 9 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Evaporator Fan Fault H. Warm Freezer Temperatures a. Top hinge cover missing, not depress- a. Replace hinge cover. without “SERVICE” Flashing ing fan switch b.
- Page 10 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION I. Warm Refrigerator Door or Drawer Ajar Temperatures with “SERVICE” Flashing a. Food product obstruction a. Move obstruction. b. Door/cabinet hinge problem b.
- Page 11 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Evaporator Heavily Frosted I. Warm Refrigerator a. Door or drawer ajar a. See Door or Drawer Ajar above. Temperatures with b.
- Page 12 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Lights ON with Door/ Drawers Closed J. Warm Refrigerator a. Top hinge cover missing, not depress- a. Replace hinge cover. Temperatures without ing light switch “SERVICE”...
- Page 13 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION K. Warm or Normal High Room Ambient Instruct customer unit performs best Temperatures in Both between 16°C (60°F) and 32°C (90°F). Compartments with “SERVICE”...
- Page 14 International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION (Continued) Condenser Air Flow L. Warm Temperatures in Both Compartments without a. Dirty condenser a. Clean condenser. “SERVICE” Flashing b. Condenser fan blade obstructed or b.
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Page 15: No Ice, "Ice" Displayed On Lcd, But Not Flashing
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION P. No Ice, "ICE" Displayed on Unit Has Not Run Long Enough Freezer must be 17°F for icemaker to oper- LCD, but not Flashing ate, approximately 24 hours after unit instal- lation. -
Page 16: Icemaker Produces Hollow Cubes
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION Q. No Ice and "ICE" Not Icemaker System Not Energized Press ICE key. “ ICE” should appear on Displayed on LCD LCD. -
Page 17: Membrane Switch On Control Board Malfunctioning
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION V. Membrane Switch on Control Control Panel Ribbon Cable Check control panel ribbon cable. All Pins Board Malfunctioning Disconnected or Connected Incorrectly on board should be in ribbon cable terminal housing. -
Page 18: Door Or Drawers Not Able To Close Completely
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PROBLEM POSSIBLE CAUSE TEST / ACTION X. Lights Stay ON when Door Door or Drawer Ajar &/or Drawers are Closed - (May be Accompanied by a. Food product obstruction a. -
Page 19: Sealed System Troubleshooting /Diagnostic Tables
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) SEALED SYSTEM TROUBLESHOOTING / DIAGNOSTICS TABLES NORMAL OPERATING PRESSURES TABLE NOTES: • Only enter the sealed system to check pressures if the Error Code Troubleshooting Guide and General Troubleshooting Guide could not pinpoint the cause of the temperature problem. -
Page 20: Pressure Indications
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) PRESSURE INDICATIONS If low-side pressure is & high-side pressure is possible problem is NORMAL NORMAL MECHANICAL (see General Troubleshooting Guide) LEAK HIGH RESTRICTION HIGH INEFFICIENT COMPRESSOR HIGH HIGH OVER CHARGE... -
Page 21: Control Panel Membrane Switch / Ribbon Cable Test
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) CONTROL PANEL MEMBRANE SWITCH / RIBBON CABLE TEST If integrity of control panel assembly is suspect, perform continuity tests at membrane switch ribbon cable terminal housing. Begin by disconnecting ribbon cable from control board. Disengage control board from control panel. Remove control panel assembly from unit and place it on solid surface. -
Page 22: Door Hinge Operation Test Procedures And Corrections
International Integrated Series International Integrated Series Troubleshooting Guides (ICB700 T all) (ICB700 T all) TALL UNIT DOOR HINGE OPERATION TEST PROCEDURES AND CORRECTIONS 1. If the door of a ICB700 Tall unit will not close properly, first check for obstructions. 2.