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Sub-Zero 700-2 Series

Sub-Zero 700-2 Series
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Page 34
Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-24
#3756780 - Revision D - July, 2005
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
If error codes are observed during Diagnostic Mode, a non-flashing SERVICE annunciator will appear on the LCD
when Diagnostic Mode ends, indicating error codes are still registered (See Figure 3-50). To clear a non-flashing
SERVICE annunciator and the error codes, the problem must be corrected and the unit must be ON. Then, the Bell
ON/OFF key must be pressed and held for fifteen seconds. The control will emit a short “beep” when the SERVICE
annunciator and error codes are cleared. (See Figure 3-51)
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
WARMERCOLDER
BEEP!
Figure 3-51. Clear Non-flashing SERVICE Annunciator - Press & Hold Bell ON/OFF Key for 15 Seconds
UNITICE
REFRIGERATOR
ON/OFF
ON/OFF
ON/OFF
WARMERCOLDER
FREEZER
WARMERCOLDER
SERVICE
Figure 3-50. Non-flashing SERVICE Annunciator after Diagnostic Mode = Error Codes were Registered
Press and hold for 15 seconds
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 only applies to units
after these serial numbers.
NOTE: VS compressor = Variable Speed compressor
NOTE: Currently, Error Codes are registered because of thermistor errors, defrost system errors or 700TF/I-2V vari-
able speed compressor control system errors. The table above will be updated through addendums when subse-
quent software and electrical changes occur and more error codes are added. See paragraph below for instructions
on how to clear Error Codes.

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