Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn JDF-4SB manual TROUBLESHOOTING Continued, Problem, Probable Cause, Remedy, Initial fill/setup

Models: JDF-4D JDF-4SB JDF-4S

1 57

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TROUBLESHOOTING (Continued)

PROBLEM	PROBABLE CAUSE	REMEDY
Water leak filling drip tray or around	1. Initial fill/setup	Some expansion normal. May fill
dispense deck area		drip tray during initial ice block
		formation
	2. Dispense deck	Inspect or replace fittings clamps,
		o-rings, solenoids and quick discon-
		nect fittings.
		NOTE: Dispense deck area slopes
		to drain tube that leads to the drip
		tray.

	3. Water pressure greater than
	100psi
Water leaking beneath machine	1. Bath tank overflow.

	2. Condensation from cabinet cool-
	ing coil.
Erratic spray during dispense	Dispense nozzle mixer missing or
	broken
Dispense nozzle dripping water	Dispense solenoid.

Install water pressure regulator and reduce to 50 psi.

A)Check all internal water connec- tions.

B)Check internal plumbing connec- tions.

Check for routing of condensation tube to water bath.

Replace mixer.

Replace dispense deck solenoid.

10	49179	110613

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Image 10

Bunn JDF-4SB, JDF-4D manual TROUBLESHOOTING Continued, Problem, Probable Cause, Remedy, Initial fill/setup

Contents

BUNN-O-MATIC CORPORATION SERVICE & REPAIR MANUALJDF-2S, JDF-4S JDF-4D, JDF-4SB 49179.0000C 02/14 2013 Bunn-O-Matic CorporationBUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Basic Maintenance CONTENTSSafety first Preventive MaintenanceRecommended Daily Cleaning Instructions REQUIRED REGULAR MAINTENANCE PROBABLE CAUSE TROUBLESHOOTINGPROBLEM Cold Water CirculationDispenser Locked Out TROUBLESHOOTING ContinuedRefrigeration PROBLEMPROBABLE CAUSE TROUBLESHOOTING ContinuedPROBLEM REMEDYTROUBLESHOOTING Continued concentrate onlywater only PROBLEM1. Initial fill/setup TROUBLESHOOTING ContinuedPROBLEM PROBABLE CAUSEfrom bag-in-box connector to bottle TROUBLESHOOTING ContinuedPROBLEM PROBABLE CAUSESERVICE COMPONENT ACCESSJDF-4S shown SERVICECONT ACCESS PANELSFIG. 1 ACCESS PANELS 49179SERVICECONT DISPENSE PLATFORM REMOVAL The JDF-4S uses 2 of the two head dispense platformsFIG. 3 BALLAST SERVICE CONT Ballast JDF-2S,4SLocation Location SERVICE CONT Cabinet Fan all ModelsFIG. 5 CABINET FAN SERVICE CONT LG Compressor JDF-2S,4S,4D GRN WireSERVICE CONT Compressor Cont Location SERVICE CONT GD Compressor JDF-2S,4S,4DFIG. 11 COMPRESSOR FIG.12 COMPRESSOR THERMALBLU/BLK GRN WHI SERVICE CONT Compressor ContPlugs into Relay SERVICE CONT Compressor JDF-4SB 230V shownBLU from Capacitor SERVICE CONT Compressor ContBLU/BLK BRN from CapacitorLocation SERVICE CONT Compressor Switch all ModelsFIG. 19 COMPRESSOR SWITCH RED/BLK BLKLocation SERVICE CONT Condenser Fan all ModelsFIG. 21 CONDENSER FAN BLU/BLKSERVICE CONT Control Board, Main all Models SERVICE CONT Portion Control Board JDF-2S,4S Disconnect the dispenser from the power sourceSERVICE CONT Push Button Control Board JDF-4D FIG. 28 CONTROL BOARD CONNECTORSSERVICE CONT Portion Control Board JDF-4DSERVICE CONT Circulation Pump all Models SERVICE CONT Dispense Platform Switch all Models FIG. 33 DISPENSE PLATFORM SWITCHSERVICE CONT Dispense Pump all Models except JDF-4D FIG. 38 DISPENSE MOTOR CONNECTORS SERVICE CONT Dispense Motor all ModelsFIG. 37 DISPENSE MOTOR Dispense Station #1 WHI/VIO SERVICE CONT Dispense Valve all ModelsFIG. 39 DISPENSE VALVE #3 WHI/VIO Dispense Station #4 WHI/ORN YEL to Control BoardSERVICE CONT Dispense Switches JDF-2S, JDF-4S P1449SERVICE CONT Cold Water Dispense Switch JDF-4S only SERVICE CONT Dispense Membrane Switch all Models LocationCold Water Dispense Membrane Switch all Models FIG. 48 MEMBRANE SWITCHSERVICE CONT FIG.47 MEMBRANE SWITCHESFIG. 49 EMI FILTER SERVICE CONT EMI Filter all ModelsJDF-4S shown FIG. 51 LAMPS & HOLDERS SERVICE CONT Lamps, Holders and Ballasts Early ModelsFIG. 52 LAMP HOLDERS SERVICE CONT LED Lamps JDF-2S, JDF-4S SERVICE CONT Rectifier JDF-2S, JDF-4SFIG. 55 RECTIFIER SERVICE CONT Relay all ModelsFIG. 57 RELAY SERVICE CONT Resistor all 230V ModelsFIG. 59 RESISTOR WHI to Control Board SERVICE CONT Solenoid - Cold Water JDF-4S onlyWHI/VIO to Control Board FIG. 62 COLD WATER SOLENOIDSERVICE CONT Solenoid - Inlet all Models BRN to Control BoardRESISTANCE SERVICE CONT Temperature Probe all ModelsTEMP VOLTAGETEMP SERVICE CONT Temperature Sensor all ModelsFIG. 67 TEMPERATURE SENSOR RESISTANCEBoard J6-1,J12-1 SERVICE CONT Transformer all ModelsWHI/BLU to Control to ControlWHI/BLK - T12 SERVICE CONT Transformer - Lited Doors JDF-2S, JDF-4SWHI/GRN - T8 WHI - 120V T2, 240V T6Station Triac MapStation StationELECTRICAL SCHEMATIC Models with DIAGRAM for JDF-2S LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-2S 2 WIRESCHEMATIC WIRING ELECTRICAL SCHEMATIC DIAGRAM for JDF-2SModels with Flourescent Lited Doors DIAGRAM JDF-2S2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S Models with LED Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-4S SINGLE PHASE2 WIRE SINGLE PHASE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4SSCHEMATIC WIRING DIAGRAM JDF Models with Flourescent Lited DoorsSCHEMATIC WIRING DIAGRAM JDF-4D ELECTRICAL SCHEMATIC DIAGRAM for JDF-4DPress & Release Models 2 WIRE2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4D Portion Control ModelsSCHEMATIC WIRING DIAGRAM JDF-4D SINGLE PHASE2 WIRE ELECTRICAL SCHEMATIC DIAGRAM for JDF-4S-SBSCHEMATIC WIRING DIAGRAM JDF-4S-SB SINGLE PHASE