Error Code Troubleshooting Guide - Sub-Zero 700-3 BASE Technical & Service Manual

Integrated

ERROR CODE TROUBLESHOOTING GUIDE

EC
05 A. If "EE" for refrigerator compartment was displayed and "SERVICE" flashing, check the following:
1. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
2. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
B. If "EE" for refrigerator compartment was NOT displayed, problem is intermittent thermistor error:
1. Door not closing properly. Correct door closing problem.
2. Fan switch, light switch, wiring & electrical connections. Repair wiring / connections or replace switch.
3. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
4. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
C. If "EC 05" and "SERVICE" were flashing before initiating diagnostic mode, unit also experienced excessive com-
pressor run condition that may or may not be associated with the "05" Error Code. See problem A in General
Troubleshooting Guide.
06 A. Initiate Diagnostic Mode. If "EE" is displayed for refrigerator evaporator thermistor, check the following:
1. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
2. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
B. Initiate Diagnostic Mode. If "EE" is NOT displayed for refrigerator evaporator thermistor, problem is intermittent:
1. Door not closing properly. Correct door closing problem.
2. Fan switch, light switch, wiring & electrical connections. Repair wiring / connections or replace switch.
3. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
4. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
C. If "EC 06" and "SERVICE" were flashing before initiating diagnostic mode, unit also experienced excessive com-
pressor run condition that may or may not be associated with the "06" Error Code. See problem A in General
Troubleshooting Guide.
07 A. If "EE" for freezer compartment was displayed and "SERVICE" flashing, check the following:
1. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
2. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
B. If "EE" for freezer compartment was NOT displayed, problem is intermittent thermistor error or caused by over-heat-
ing (above 116°F), check the following:
1. Door not closing properly. Correct door closing problem.
2. Fan switch, light switch, wiring & electrical connections. Repair wiring / connections or replace switch.
3. Proper mounting and location of freezer compartment thermistor. Remount correctly.
4. Defrost terminator. Replace if defective.
5. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
6. Resistance of thermistor -r 30,000 to 33,000 ohms at 32°F. Replace if defective.
C. If "EC 07" and "SERVICE" were flashing before initiating diagnostic mode, unit also experienced excessive com-
pressor run condition that may or may not be associated with the "07" Error Code. See problem A in General
Troubleshooting Guide.
08 A. Initiate Diagnostic Mode. If "EE" is displayed for freezer evaporator thermistor, check the following:
1. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
2. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
B. Initiate Diagnostic Mode. If "EE" is NOT displayed for freezer evaporator thermistor, problem is intermittent thermis-
tor error or caused by over-heating (above 116°F), check the following:
1. Door not closing properly. Correct door closing problem.
2. Fan switch, light switch, wiring & electrical connections. Repair wiring / connections or replace switch.
3. Proper mounting and location of freezer evaporator thermistor. Remount correctly.
4. Proper operation of defrost terminator (Cut-in 30°F/Cut-out 70°F). Replace if defective.
5. Thermistor electrical connections and continuity from thermistor to J5 on control board. Reconnect / repair.
6. Resistance of thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
C. If "EC 08" and "SERVICE" were flashing before initiating diagnostic mode, unit also experienced excessive com-
pressor run condition that may or may not be associated with the "08" Error Code. See problem A in General
Troubleshooting Guide.
NOTE: After repairs, always clear Error Codes by pressing Bell ON/OFF key for 15 seconds.
3 Series
(700- BASE)
TEST / ACTION
8-3
Troubleshooting Guides
#3758424 - Revision B - December, 2005