Scotsman Ice MDT5N40 Service Diagnosis Circuit Board, Power, Bin Empty, Off Timer, No Water

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MDT5N25 & MDT5N40

SERVICE DIAGNOSIS: Circuit Board

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	Explanation of Indicator Light	Position On	Name and Meaning of
		Board	Light or Reset
	On at all times when the master switch is ON and machine is	1	Power,
	connected to electrical power.	1	ON = Normal
	connected to electrical power.		ON = Normal
	On when ice level is low (unit making ice).	2	Bin Empty,
		2	ON = Needs Ice
			ON = Needs Ice
	Normal 6 minute off/delay start. To prevent short cycling, the		Off Timer,
	machine will not restart after any shut off (except power to the	3	ON = Unit cycling off
	board) until 6 minutes have passed.
	On when water level is low in the reservoir.	4	No Water,
		4	ON = Trouble
			ON = Trouble

May 2001

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Contents

Introduction Table of ContentsMDT5N25 & MDT5N40 Water Limitations For the Installer Environmental LimitationsInstallation Limitations Service Limitations Minimum MaximumUnpack and install the ice and water spouts For the InstallerMachine Stand Installation Counter Top or Machine Stand InstallationFor the Installer Wall Mount Kit Conform to ALL Applicable Codes For the PlumberFor the Electrician For the Installer Final Check List Start Up Initial Start UPPre Start Inspection Component Description ICE Sweep Bearing Breaker Motor Evaporator Auger Water Seal Potential Relay On/Off Switch ManualComponent Description Control Box Circuit BoardShut Down consists Splash panel cleaningElectrical Sequence Start up consistsOperation Water Operation Refrigeration Refrigeration SchematicContainer Operation Ice VendingDispense Area Sanitation To Sanitize Cleaning and SanitizingScotsman Ice Machine Cleaner contains acids Check and tighten all bolts and screws Moving Parts Hazard Maintenance and CleaningSymptom Possible Cause Probable Correction Service DiagnosisMDT5N25 & MDT5N40 Bin Empty Service Diagnosis Circuit BoardPower Off TimerBIN Controls Ice Level Sensors Removal and ReplacementTo Remove the Breaker Bearing Assembly Removal and Replacement Bearing And BreakerTo Remove the Auger To Replace the Water Seal Removal and Replacement Water SealTo Remove the Water Seal To Reassemble the Evaporator and Auger For Access to the Evaporator to Gearmotor boltsTo Replace the Evaporator To Inspect the gearmotor To Remove and Repair the Gearmotor AssemblyElectrical Shock Hazard Do not USE Mineral OIL in this Refrigeration System Refrigeration Service R-404A HP62Only a HFC type dryer should be used Refrigeration ServiceGeneral Information Instructions for R-404A Circuit Board ServicePrinted Circuit Board Handling Precautions Liquid Charging