Part Number STH042 3/14
71
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 3 consecutive
freeze cycles.
Possible Cause Checklist
Improper installation
•
Refer to “Installation/Visual Inspection Checklist”
on page 64
Water System
•
Water Level too high or defective float switch
(water escaping water trough)
•
Low water pressure (20 psig min.)
•
High water pressure (80 psig max.)
•
High water temperature (90°F/32.2°C max.)
•
Clogged water distribution tube
•
Dirty/defective water inlet valve
•
Defective water pump
Electrical System
•
Harvest cycle not initiated electrically
•
Contactor not energizing
•
Compressor electrically non-operational
•
Restricted condenser air flow
•
High inlet air temperature (110°F/43.3°C max.)
•
Condenser discharge air re-circulation
•
Dirty condenser fins
•
Defective fan cycling control
•
Defective fan motor
•
Low water pressure (20 psig min.)
•
High water temperature (90°F/32.2°C max.)
•
Dirty condenser
Summary of Contents for NEO
Page 2: ......
Page 20: ...20 Part Number STH042 3 14 This Page Intentionally Left Blank ...
Page 30: ...30 Part Number STH042 3 14 This Page Intentionally Left Blank ...
Page 46: ...46 Part Number STH042 3 14 This Page Intentionally Left Blank ...
Page 94: ...94 Part Number STH042 3 14 This Page Intentionally Left Blank ...
Page 107: ...Part Number STH042 3 14 107 This Page Intentionally Left Blank ...
Page 130: ...130 Part Number STH042 3 14 WIRING DIAGRAM ALL MODELS ...
Page 134: ...134 Part Number STH042 3 14 This Page Intentionally Left Blank ...
Page 135: ......