Bunn S/N SNG0033000 & UP manual Equipment will not operate No power or incorrect voltage

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	TROUBLESHOOTING (cont.)
	Problem	Possible Cause		Troubleshooting Procedure
	Equipment will not operate.	1.	No power or incorrect voltage.	Measure the voltage at the terminal
				block and confirm that it matches
				the voltage specified on the brewer
				data plate within +/- 10%.
	Brew cycle will not start.	1.	No water	Check plumbing and shut-off
		2.	ON/OFF switch	valves
		2.	ON/OFF switch	Test the ON/OFF switch. Refer to the
				Test the ON/OFF switch. Refer to the
		3.	Brew switch	switch test procedures.
		3.	Brew switch	Test the BREW switch. Refer to the
				Test the BREW switch. Refer to the
		4.	Brew Valve	switch test procedures.
		4.	Brew Valve	Test the Brew valve. Refer to Testing
				Test the Brew valve. Refer to Testing
		5.	Electronic Control Board	Individual Components.
		5.	Electronic Control Board	Substitute a control board known to
				Substitute a control board known to
	Automatic refill will not operate	1.	No water	be in good working order.
	Automatic refill will not operate	1.	No water	Check plumbing and shut-off
	or display shows FILL TIME TOO			Check plumbing and shut-off
	LONG	2.	Water strainer	valves.

(A) Direction of flow arrow must be pointing towards direction of water flow.

(B) Remove the strainer and check for obstructions. Clear or replace

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Contents Single TF DBC Phone 217 529-6601 FAX 217BUNN-O-MATIC Commercial Product Warranty Table of Contents User Notices 37881.0002 Volt ac single phase Hz modelsElectrical HOOK-UP Electrical Requirements Models without power cord 230 volt ac Single phase, 60 Hz modelsPlumbing HOOK-UP CE RequirementsPlumbing Requirements Main ON/OFF Switch Batch Selector SwitchesON/OFF Switch Enable Brew Brew SwitchInitial Setup Coffee BrewingCleaning Glossary Programming Switches ProgrammingProgramming Switch DRIP-OUT Times Program Functions LevelRecipes Returns to a LevelContinues to D Continues to Program Flow DiagramReturn to a Programming the Brewer Units Setting Units of Measure Procedure for modifying units of measureThis function allows the operator to set Brew Procedure for Setting the RecipeSET NEW Recipe Refer to SET Pulse Brew for description SET NEW RecipesSizes DONE? Procedure to program the coffee name Card Contains Recipe forReview RECIPES? Noyes Review RECIPES/MODIFY RECIPES/SET UP no Name Coffee Names Procedure for reviewing recipesNext To exit, press Next until the display reads ThatBrew OZ Setting or Adjusting Brew VOL- Umes ScreenBypass Review RecipesSET Pulse Brew Modifying pulse brew Range 1st on time off to 4 minutesNO-NAME Modifyshownext SET Pulse BrewSET Pulse Brew Easy Pulse Setup DONE? SET Pulse Brew Enter TimesTIMES? SET Preinfusion Batches DONE?Setup Complete Assign Recipe ? Enable ADS?Assign Recipes Screen Spray OZ/M SET TempSET Ready Calibrate Spray .. Press Brew to Start Bypass OZ/MCalibrate Flow Start Procedures to calibrate the bypass flow rateCalibrate Flow Procedure to set funnel detect Procedures to view/reset the brew countersBrew Counters Funnel Detect optionalService Tools Testing individual components outputsProcedure to test components outputs Brew ValveNothing Pressed FrequencyFactory Defaults Procedure to set factory defaultsTroubleshooting Troubleshooting ProceduresScreen Displayed Possible CauseTemperature Press ON/OFF to terminate the cycleON/OFF switch was pressed after the brew cycle was started Press ON/OFF to terminate the brew cycleTank Heater failure Triac FailureTemperature Sensor Probe Wires shorted to housing, or toWater shut off to brewer Broken or not making connectionEquipment will not operate No power or incorrect voltage Brew switch Switch test proceduresBrew Valve Switch test procedures Data plate within +/- 10%Troubleshooting Problem Possible Cause Overflow Protection Switch When this condition occurs,With power removed from brewer Holding it in open state See above or boilingLimit Thermostat Heating Time TOO LongTroubleshooting Problem Inconsistent beverage level Strainer Server Pointing towards the brewerImproper water pressure 90 psi 138 and 620 kPaConsistently high or low beverage Brew Volume adjustment Water temperatureLevel in server For each brew cycleTroubleshooting Problem Possible Cause Weak beverage Remove and clean lime off tank heatersBrewer is making unusual noises Plumbing lines Water Supply Tank HeatersSchematic Wiring Diagram Single TF DBC Schematic Wiring Diagram Wire Single Phase Schematic Wiring Diagram Single TF DBC