Part Number STH039 8/13 59
Safety Limit Checklist
The following checklists are designed to assist the
service technician in analysis. However, because
there are many possible external problems, do not
limit your diagnosis to only the items listed.
Safety Limit #1
Freeze time exceeds 60 minutes for 6 consecutive
freeze cycles.
Possible Cause Checklist
Improper installation
• Refer to “Installation and Visual Inspection
Checklist” on page 52
Water System
• Water Level set too high (water escaping through
over flow tube)
• Low water pressure 1.37 bar minimum
• High water pressure 5.52 bar maximum
• High water temperature 32°C maximum
• Clogged water distribution tube
• Dirty/defective float valve
• Defective water pump
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