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Troubleshooting Guides
Integrated (
Integrated (
700-
700-
2) Series
2) Series
8-2
#
3756780
- Revision D - July, 2005
TROUBLESHOOTING GUIDES
This section of the manual contains:
• The Error Code Table and the Error Code Troubleshooting Guide.
NOTE:
Error Codes were incorporated into the electronic control system after serial #1759493 (700TC/I-2),
#1759163 (700TR-2) and #1757258 (700TF/I-2 & 700TF/I-2V). The Error Code table below and the Error Code
Troubleshooting Guide apply to units after these serial numbers only, unless the control board has been changed
during a service call.
• The General Troubleshooting Guide, covers all problems that an Integrated (700-2) Series 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 registered because of thermistor errors, defrost system errors or 700TF/I-2V variable speed com-
pressor control system errors. These types of errors can lead to temperature problems. If Error Codes are regis-
tered, they will appear when Diagnostic Mode is initiated.
NOTE:
If Error Codes appear with a flashing “SERVICE” annunciator prior to initiating Diagnostic Mode, the unit
experienced 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 UNIT ON/OFF 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.
If Error Codes appear during Diagnostic Mode, 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 annunciator will appear on the
LCD when Diagnostic Mode ends, indicating error codes are still registered. Error Codes must be cleared from the
electronic control memory manually. To clear the non-flashing SERVICE annunciator and the error codes, the prob-
lem must be corrected and the unit must be ON. Then, press and hold the Door Ajar Alarm Bell ON/OFF key for 15
seconds. The control will emit a short “beep” when the SERVICE annunciator and error codes are cleared.
Error Code Table
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
80
High VS compressor differential pressure or low voltage supplied to VS compressor
81
High amperage draw at VS compressor
82
VS compressor could not maintain lowest minimum speed at highest current draw
83
Locked VS compressor rotor
84
Short circuit at VS compressor controller output circuit
85
VS compressor converter overheated and shut down VS compressor
86
Serial communication failure between VS compressor controller and electronic control board
.
87
Speed information from electronic control board is out of specification
88
Electronic control board not receiving status data in response to speed commands