This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
A. Construction .................................................................................................................. 7
1. Air-Cooled (MAJ) ...................................................................................................... 7
2. Water-Cooled (MWJ) ............................................................................................... 8
3. Remote Models (MRJ) ........................................................................................... 12
1. Operation Flow Chart ............................................................................................ 13
2. Shutdown Flow Chart ............................................................................................ 14
B. Service Diagnosis ....................................................................................................... 16
D. Control Board Check ................................................................................................... 26
E. Bin Control Check ....................................................................................................... 27
1. Float Switch Check ................................................................................................ 29
2. Float Switch Cleaning ............................................................................................ 30
G. Thermistor Check ........................................................................................................ 31
H. Control Switch ............................................................................................................. 31
I. Diagnostic Tables .......................................................................................................... 32
J. Freeze-Up Check List .................................................................................................. 36
A. Control Board Layout ................................................................................................. 38
IMPORTANT
CONTENTS
3