Manitowoc QF0400 Service Manual

Also see for QC0700: Installation, use & care manual Service manual Building instructions Technician's handbook

Contents

Part No. 80-1214-3 5-1Section 5TroubleshootingChecklistProblem Possible Cause To CorrectIce machine does not operate. No electrical power to the ice machine. Replace the fuse/reset the breaker/turn onmain power switch/plug cord into receptacle.Control Board fuse openICE/OFF/CLEAN toggle switch set improperly. Move toggle switch to the ICE position.8 minute lockout has not expired. Bin level light will flash to indicate 8 minutelockout has not expired. Refer to Sequence ofOperationBin level sensor is disconnected or iscontacting the ice.Connect bin level sensor or remove icecontacting probe.High Pressure Control is open. Clean condenser, check fan motor, check highpressure control operation. Check forrefrigerant overcharge or non-condensables insystem.Gear Motor runs butcompressor will not start.Water reservoir is empty. (Water must contactthe water level probe to start the compressor).Open water service valve or clean float valvescreen. Check water level probeWater level probes out of position Correct water level probe position.Remotes Only No electrical power to condensing unit Replace the fuse/reset the breaker/turn on themain power switch.Ice machine stops and can berestarted by moving the toggleswitch to OFF and back to ICE.The SafeGuard feature is stopping the icemachine.Refer to “SafeGuard Feature” in this sectionIce quality is poor. Poor incoming water quality. Test the quality of the incoming water andcheck filter.Water filtration is poor. Replace filter.Incoming water temperature is above 90 ° F(32.3 °C)Correct water temperature. (Verify check/mixing valves in other equipment are workingproperly). Connect the ice machine to a coldwater supply.Water pressure is low. Water pressure must remain between 20 and80 psig.Water softener is working improperly (ifapplicable).Repair the water softener.Low ice capacity. Water float valve screen is dirty. Remove and clean the filter screen.Incoming water supply is shut-off. Open the water service valve.Water dump valve is leaking. Clean the dump valve.Water Pressure is low. Water pressure must remain between 20 and80 psig.Incoming water temperature is above 90 ° F(32.2 °C)Correct water temperature. (verify check/mixing valves in other equipment is workingproperly)Water float valve stuck open or leaking. Remove the float valve and clean it.Air-Cooled Models Only Objects stacked around ice machine, blockingairflow to condenser.Remove items blocking airflow.High air temperature around ice machine. Air temperature must not exceed 110 ° F(43.3° C)Inadequate clearance around the ice machine. Provide adequate clearance.The condenser is dirty. Clean the condenser.Revised 8/2003Downloaded from www.Manualslib.com manuals search engine