Scotsman Ice CME1356R and CME1656R, Service Diagnosis, Problem or Symptom, Possible Cause

CME1356R and CME1656R

Service Diagnosis

Problem or Symptom	Possible Cause	Probable Correction
		Check bin controls. If the bin full light is on or
		blinking the bin controls may be dirty. Clean if
		dirty. The board and bin controls may also
	Bin controls did not sense	need to be checked.
	ice falling, unit stayed in
		Check evaporators for lime scale build up.
	harvest until the maximum
		Clean evaporators and bin controls if dirty.
	harvest time ran out.
Unit is off because of a		Push and release Off button. Push and
“Harvest Problem”
		release Freeze button. Check machine
		operation. Check if ice is made and harvests.
	Bin controls or AutoIQ	See “Unit does not shut off” below..
	Controller may have failed.
	Other components may	Check the next page
	have failed
	Cube size control float is	Check/clean
	sticking.
Cubes are too large
	Inlet water valve leaking	Check hose from water valve for slow drip.
	thru (slowly)	Replace valve if dripping.
Cubes are too small	Not enough water	Check for leak in reservoir
		Check for a leak thru the purge valve
	Dirty condenser	Clean condenser
	Recirculation of air	Block air re-circulation or move condenser
		Check system. If there is a low charge, find
Low ice capacity	Low refrigerant charge	the leak, recover the refrigerant, repair the
		leak, replace the dryer, evacuate and weigh in
		the nameplate charge.
	Too much water	Check for inlet water valve leak thru
		Check controls. Unplug thermostat and check
		bin full light, if off, place something between
		the electric eyes. The bin full light should
		begin to blink (after 20 seconds of continuous
		blockage it will glow steadily). If not, check
		operation of electric eyes by unplugging #4
		and jumping out the two pins on the controller
Unit does not shut off	Ice sensing system may	(touch the tool to the cabinet to discharge
	have failed.	static electricity before contacting the
		controller). If the bin full light blinks, replace
		the bin controls. If it does not blink, replace
		the controller. Note: Leaving #4 unplugged
		and jumped for 20 seconds will shut the
		machine down on a bin full (at the end of the
		harvest cycle). It will restart after 4 minutes or
		may be reset by pushing the Freeze button.

May 2001

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