5-2Before Calling for Service Section 5Problem Possible Cause To CorrectIce machine produces shallowor incomplete cubes, or the iceIce thickness probe is out ofadjustment.Adjust the ice thickness probe. Seepage 3-5.fill pattern on the evaporator isincomplete.Water trough level is to high or too low. Check the water level. See page 3-4.Water float valve filter screen is dirty. Remove and clean the filter screen.See page 4-4.Water filtration is poor. Replace the filter.Hot incoming water. Connect the ice machine to a coldwater supply. See page 2-7.Water float valve is not working. Remove the water float valve andclean it. See page 4-4.Incorrect incoming water pressure. Water pressure must be 20-80 psi(137.9 - 551.5 kPA).Ice machine is not level. Level the ice machine.See page 2-4.Low ice capacity. Water float valve filter screen is dirty. Remove and clean the filter screen.See page 4-8.Incoming water supply is shut off. Open the water service valve.Water float valve stuck open orleaking.Remove the water float valve andclean it. See page 4-4.The condenser is dirty. Clean the condenser. See page 4-9.High air temperature around icemachine (air-cooled models).Air temperature must not exceed110°F (43.3°C).Inadequate clearance around the icemachine.Provide adequate clearance.See page 2-3.Objects stacked around ice machine,blocking airflow to condenser(air-cooled models).Remove items blocking airflow.Safety Limit FeatureIn addition to the standard safety controls, yourManitowoc ice machine features built-in safety limitsthat will stop the ice machine if conditions arisewhich could cause a major component failure.Before calling for service, re-start the ice machineusing the following procedure:1. Move the ON/OFF/ WASH switch to OFF andthen back to ON.A. If the safety limit feature has stopped the icemachine, it will restart after a short delay.Proceed to step 2.B. If the ice machine does not restart, see “Icemachine does not operate” on the previouspage.2. Allow the ice machine to run to determine if thecondition is reoccurring.A. If the ice machine stops again, the conditionhas reoccurred. Call for service.B. If the ice machine continues to run, thecondition has corrected itself. Allow the icemachine to continue running.