Sub-Zero 700-3 BASE Technical & Service Manual page 87

Integrated
ERROR CODE TROUBLESHOOTING GUIDE
EC
40 A. If Error Code 07, 20, 21, 22, 23, or 24 is also displayed during Diagnostic Mode, see Test/Actions under that code.
B. Check for obstructions to freezer drawer closing, including drawer closer position. Remove obstruction/Trip drawer
closer forward.
C. Check cleanliness of condenser. Clean if needed.
D. Check for obstruction to condenser fan blade or loose fan blade. Remove obstruction/Tighten Blade.
E. With unit running, check for 115 V AC from compressor to condenser fan. Repair defective wiring or replace defec-
tive motor.
F. Check resistance of freezer compartment thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
G. Check evaporator fan blade position and for obstructions. Reposition if incorrect/Remove obstruction.
H. With unit running and light switches depressed:
1. Check for 115 V AC form J3-7 to light switches. Repair wiring/Replace defective switch.
2. Check for 115 V AC form J3-1 to evaporator fan motor. Repair wiring/Replace defective motor.
3. Check for 115 V AC form P1 to compressor. Repair wiring if defective.
I. Check sealed system for leaks, restrictions or inefficient compressor.
50 A. If Error Code 07, 20, 21, 22, 23, 24 or 40 is also displayed during Diagnostic Mode, see Test/Actions under that
code.
B. Check for obstructions to refrigerator drawer closing, including drawer closer position. Remove obstruction/Trip
drawer closer forward.
C. Check resistance of refrigerator compartment thermistor - 30,000 to 33,000 ohms at 32°F. Replace if defective.
D. Check refrigerator compartment fan blade position and for obstructions. Reposition if incorrect/Remove obstruction.
E. With unit running and light switches depressed:
1. Check for 115 V AC form J3-5 to evaporator fan motor. Repair wiring/Replace defective motor.
F. Check air baffle control operation (700BC/I-3 Only). Repair wiring/Replace if defective.
G. Check sealed system for leaks, restrictions or inefficient compressor.
NOTE: After repairs, always clear Error Codes by pressing Bell ON/OFF key for 15 seconds.
3 Series
(700- BASE)
TEST / ACTION
8-5
Troubleshooting Guides
#3758424 - Revision B - December, 2005