Sub-Zero UC-24 series

Troubleshooting Guides
Under Counter (UC-24) Series
8-7
#7003933 - Revision B - November, 2007
GENERAL TROUBLESHOOTING GUIDE TABLE OF CONTENTS
Page #
A. “EE” Displayed in place of Freezer Temperature with “SERVICE” Flashing .................................................... 8-8
B. “EE” Displayed in place of Refrigerator Temperature with “SERVICE” Flashing .............................................. 8-8
C. Warm or Normal Temperatures Displayed with “SERVICE” Alone
Flashing .................................................... 8-8
D. Warm or Normal Temperatures Displayed with non-flashing
“SERVICE” Displayed ....................................... 8-8
E. Erratic Temperatures with or without
“SERVICE” Flashing .............................................................................. 8-8
F. Warm Refrigerator Temperatures, “SERVICE” not displayed or Flashing
...................................................... 8-8
G. Refrigerator Temperatures Too Cold with or without
“SERVICE” Flashing (UC-24C ONLY) ........................... 8-8
H. Warm Freezer Temperatures, “SERVICE” not displayed or Flashing
............................................................. 8-10
I. Product Temperature 10° or More Colder than Displayed Temperature ....................................................... 8-12
J. 1. “Extremely” Cold Temperatures Displayed .............................................................................................. 8-12
• 1° to 7° in Refrigerator
• -21° to -15° in Freezer
2. If outside US - “Extremely” Warm Temperatures Displayed
• 34° to 45° in Refrigerator
• -5° to 5° in Freezer
K. No Ice ............................................................................................................................................................. 8-12
L. Icemaker produces Too much ice ................................................................................................................. 8-13
M. Icemaker Produces Hollow Cubes ................................................................................................................. 8-13
N. Icemaker Produces Small Cubes ................................................................................................................... 8-13
O. Water or Clump of Ice in Ice Bucket .............................................................................................................. 8-13
P. No LCD ......................................................................................................................................................... 8-13
Q. No Lights ....................................................................................................................................................... 8-14
R. Lights Stay ON when Door is Closed ............................................................................................................. 8-14
S. Door Not Able to Close Completely ............................................................................................................... 8-14
T. Door Uneven ................................................................................................................................................... 8-14
SEALED SYSTEM DIAGNOSTICS TABLES ................................................................................................. 8-15
• Normal Operating Pressures..................................................................................................................... 8-15
• Pressure Indications................................................................................................................................... 8-15
• Temperature / Pressure Correlation........................................................................................................... 8-16
MEMBRANE SWITCH / RIBBON CABLE TEST ............................................................................................ 8-17