Manitowoc Ice Q130 User Manual
Page 37
Section 5
Before Calling for Service
Part Number 000001130 12/08
5-5
Safety Limit #2
Harvest time exceeds 3.5 minutes for 3 consecutive harvest cycles.
Because there are many possible external problems,do not limit your diagnosis to only the items listed in
these charts.
Possible Cause
Check/Correct
Improper installation
See “Installation Instructions” Section 2 of this manual
Water system
Water area (evaporator) dirty
Water freezing behind evaporator
Low water pressure (20 psi minimum.)
Loss of water from sump area
Clogged water distribution tube
Dirty/defective water float valve
Defective water pump
Electrical system
Ice thickness probe out of adjustment
Ice thickness probe dirty
Bin switch defective
Premature harvest
Refrigeration system
Non-Manitowoc components
Improper refrigerant charge
Defective hot gas valve
TXV flooding (check insulation and bulb mounting)
Defective fan cycling control