Koolaire STH045 8/15 Technician's Handbook page 66

Safety Limit #2
Harvest time exceeds 3.5 minutes for 100
Consecutive harvest cycles.
Possible Cause Checklist
Improper installation
• Refer to "Installation/Visual Inspection Checklist"
on page 57.
Water System
• Water area (evaporator) dirty
• Dirty/defective water dump valve
• Vent tube not installed on water outlet drain
• Water freezing behind evaporator
• Plastic extrusions and gaskets not securely
mounted to the evaporator
Electrical system
• Bin switch defective
• Premature harvest
Refrigeration system
• Non-OEM components
• Improper refrigerant charge
• Defective harvest valve
• TXV flooding (check bulb mounting)
• Defective fan cycling control
66 Part Number STH045 8/15