Bunn JDF-4S service manual Problem Probable Cause Remedy

Page 22

TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE	REMEDY
Dispense station not working	1. Dispense Lockout switch set to	Place switch in ON position.
	OFF position.
	2. Dispense switch failed	Check switch and harness for proper
		continuity.
All stations dispense concentrate	Main water supply	Check for ON position.
only
	Frozen bath	A) Compressor relay/contacts
		shorted - replace relay.
		B) Recirculating pump - replace or
		check for kinked flex line.
	Inlet water valve failed	A) Check for 120V or 230V power
		when dispensing. If yes, replace
		valve. If no, check harness for
		proper continuity. Then replace
		circuit board if needed.

22	44744.2 062912

Image 22

Contents JDF-2S JDF-4S Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Contents User NoticesElectrical Requirements Initial SET-UPCE Requirements Plumbing RequirementsDoor Cover Installation Secure the door cover using 5 screws providedPlumbing Connections JDF-2S Plumbing Connections JDF-4S Plumbing HookupInitial Fill Initial Fill Product Dispense Switch Mechanical Switch Machines Refrigeration SwitchRefrigeration Switch Operating ControlsDispense Lockout Switch Product Dispense Switch Membrane Switch MachinesDispense Lockout Switch Program SwitchPortion Control Option Membrane Switch Machines Portion Control Option Mechanical Switch MachinesPush and Hold Membrane Switch Machines Dispenser USETemperature LEDs JDF-4S Temperature LEDs JDF-2S Late ModelsCleaning & Preventive Maintenance Daily Rinse ProcedureCleaning Monthly Clean Condenser Coils and Filter Open dispenser doorAdjustment & Optional Settings Water Flow Testing and AdjustmentFrozen Concentrates LoadingPriming Ambient Concentrates OptionalRatio Target Optional Cold Water Flow Adjustment Dispenser LockoutLED # Circuit Board LED Indicators JDF-2S Early ModelsFunction List LED Color Illuminates JDF-4S Probable Cause TroubleshootingProblem RemedyRefrigeration TroubleshootingCompressor ON/OFF switch Dirty condenser filter or fins Space around machineProblem Probable Cause Remedy Concentrate only Water onlyTray Initial fill/setupNect fittings Water pressure greater thanProblem Probable Cause Coolant Schematic Diagram Schematic Wiring Diagram JDF-2S Models with LED Lited DoorsModels with Flourescent Lited Doors RED BLKSchematic Wiring Diagram JDF-4S BRN BLU EMIWire Quick Setup Guide JDF-2S and JDF-4S JDF-2S shown Shown.See Initial Fill

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