Manuals / Bunn / Kitchen Appliance / Coffeemaker

Bunn HC-2 HC-3 TROUBLESHOOTING cont, Problem, Probable Cause, Remedy, volts across the black and

Models: HC-2 HC-3

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TROUBLESHOOTING (cont.)
PROBLEM	PROBABLE CAUSE	REMEDY
Product will not dispense	1. No water	Water lines and valves to the
		dispenser must be open.
	2. No power or incorrect voltage to	(A1) Check the terminal block for
	the dispenser	120 volts across the black and
		white terminals on two wire 120
		volt dispenser.
		(A2) Check the terminal block for
		120 volts across the red and
		white terminal and the black and
		white terminal on three wire
		120/240 volt dispenser.
		(A3) Check the terminal block for
		240 volts across the white and
		black terminal on two wire 240
		volt dispenser.
		(B) Check circuit breakers or
		fuses.
	3. Dispense switch	Refer to Service - Dispense
		Switch for testing procedure.
		See page 18
	4. Dispense solenoid valve	Refer to Service - Dispense
	(Hot or Cold)	solenoid valve for testing proce-
		dures. See page 30 or 31
	5. Solenoid valve (Inlet)	Refer to Service - Solenoid Valve
		(Inlet) for testing procedures.
		See page 32
	6. Level control board and probe	Refer to Service - Level Control
		Board and Probe for testing
		procedures. See page 26
	7. Overflow protection switch	Refer to Service - Overflow
		protection switch for testing
		procedures. See page 28
	8. Auger drive	Refer to Service - Auger Drive.
		See page 12

7	27591 031597

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Bunn HC-2 HC-3 service manual TROUBLESHOOTING cont, Problem, Probable Cause, Remedy, volts across the black and

Contents

BUNN-O-MATIC CORPORATION SERIAL # HC00025000 - UPBUNNHC-2 HC-3INTRODUCTION WARRANTY27620.0000 USER NOTICES26525.0000 12368.0002PLUMBING REQUIREMENTS INITIAL SET-UPELECTRICAL REQUIREMENTS ELECTRICAL HOOK-UPDISPENSER USE CLEANINGADJUSTMENTS INITIAL fill & heatDRAINING THE HOT WATER TANK TROUBLESHOOTINGHOPPER DISPENSE RATE OF PRODUCT REMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSEPROBABLE CAUSE TROUBLESHOOTING cont PROBLEMRefer to Service - Limit Thermo testing procedures. See pageREMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSEREMEDY TROUBLESHOOTING contPROBLEM PROBABLE CAUSERemove and clean lime off the tank TROUBLESHOOTING CONT PROBLEMRefer to Service - Lamp, see page Refer to Service - Lamp Holder forAUGER DRIVE COMPONENTS SERVICECOMPONENT ACCESS ContentsSERVICE AUGER DRIVE COMPONENTS contAUGER DRIVE COMPONENTS cont SERVICE contBLK to Terminal Block BALLASTSERVICE cont 1. Disconnect the dispenser from the power sourceSERVICE cont CONTROL THERMOSTATMECHANICAL SERVICE cont CONTROL THERMOSTAT contFIG. 7 THERMOSTAT TERMINALS SERVICE cont DISPENSE SWITCHFIG. 9 DISPENSE SWITCH CONNECTORS SERVICE cont FIG. 12 MIXING/WHIPPER CHAMBER FROTHER AND WHIPPER MOTORSERVICE cont FIG. 11 FROTHER AND WHIPPER MOTORSERVICE cont FROTHER AND WHIPPER MOTOR contSERVICE cont HOPPER DELAY BOARDSolenoid HOT/COLD SWITCH OptionalSERVICE cont WHI/BRN to Main Harness WHI/RED to Main Harness WHI/YEL to ColdLAMP HOLDER LAMP REPLACEMENT Refer to FigSERVICE cont SERVICE cont LAMP STARTER and SOCKET 120V, 120/208V & 120/240V Models OnlySERVICE cont LEVEL CONTROL BOARD AND LEVEL PROBESERVICE cont LIMIT THERMOSTATLEVEL CONTROL BOARD AND LEVEL PROBE cont SERVICE cont OVERFLOW PROTECTION SWITCHSERVICE cont RUN/RINSE SWITCHSERVICE cont SOLENOID VALVE COLD WATER - OPTIONALSERVICE cont SOLENOID VALVES DISPENSESOLENOID VALVE COLD WATER - OPTIONAL cont SOLENOID VALVE INLET SOLENOID VALVES DISPENSE contSERVICE cont WHI from Terminal Block VIO from Liquid Level Board SOLENOID VALVE INLET contTANK HEATER SERVICE contTANK HEATER cont TANK HEATER SWITCHSERVICE cont SERVICE cont TANK HEATER SWITCH contTRANSFORMER 240V TWO WIRE MODELS ONLY SERVICE cont TRANSFORMER 240V TWO WIRE MODELSONLYcont120 VOLTS AC - 2 WIRE OR SCHEMATIC WIRING DIAGRAM HC-2, & HC-3120/208-240 VOLTS AC - 3 WIRE ConfigurationSINGLE PHASE SCHEMATIC WIRING DIAGRAM HCA-2, & HCA-32 WIRE Configuration