Troubleshooting Guide - Sub-Zero Wolf 506UI Service Manual

Troubleshooting Guide

Model 506(UC Ice Maker)
Model 506(UC Ice Maker)
TROUBLESHOOTING GUIDE
This section of the manual contains the Troubleshooting Guide which will help the Service Technician troubleshoot a
model 506 undercounter icemaker .
How to Use the Troubleshooting Guide
3
The list below indicates how the Troubleshooting Guide is arranged. Identify the description of the problem that the
unit is experiencing from the list and go to the page indicated. To the left of the problem description is a letter.
Locate that letter in the left column of the Troubleshooting Guide. The center column will identify the possible caus-
es for the problem. And, the information in the right column will explain what tests to perform in order to determine if
what you are checking is the cause and/or what action to take to correct the problem.
Troubleshooting Guide Layout
Page #
A. Compressor won't run; No ice in bin. ................................................................................................................ 6-3
B. Compressor runs; No ice in bin. ........................................................................................................................ 6-3
C. Compressor runs continuously; bin full of ice. .................................................................................................. 6-3
D. Low ice yield ...................................................................................................................................................... 6-3
E. Excessive water dripping on ice cubes 6-3
. ........................................................................................................................
F. Mineral deposit on evaporator .......................................................................................................................... 6-3
.
G. Ice cubes to thin................................................................................................................................................. 6-3
H. Ice cubes too thick. ............................................................................................................................................ 6-4
I. Condenser fan won't run during icemaking cycle. ............................................................................................ 6-4
J. Water pump won't run. ...................................................................................................................................... 6-4
K. Water tank empty .............................................................................................................................................. 6-4
L. Milky ice cubes................................................................................................................................................... 6-4
M. Taste in ice. ........................................................................................................................................................ 6-4
N. Uneven build-up of frost on evaporator plate. .................................................................................................. 6-4
O. Unit not making ice, compressor running and water flow over evaporator. ...................................................... 6-5
P. Ice slab not releasing from evaporator plate during HARVEST cycle. .............................................................. 6-5
Q. Ice slab with hollow area in center..................................................................................................................... 6-5
R. Ice slab with a lip over the front of evaporator freezing plate............................................................................ 6-5
S. Ice slab has side flanges. .................................................................................................................................. 6-5
T. Ice ball forming on capillary tube at evaporator inlet. ........................................................................................ 6-5
U. Frost between outlet of evaporator and accumulator ........................................................................................ 6-6
V. Sweating or frost on suction line........................................................................................................................ 6-6
System / Compressor Evaluation ............................................................................................................................ 6-6
6-2
#3752200 - Revision B - May, 2006