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Page 17

SERVICE TOOLS (cont.)

TROUBLESHOOTING (cont.)

tion of the individual switches on the front panel.

The following switches can be individually tested:

SINGLE Brewers:

Full Batch

Half Batch

Power

Brew Switch

Left Hidden

DONE

(-)

(+)

DUAL Brewers:

<- <- Full Batch 

Full Batch -> ->

<- <- Half Batch 

Half Batch -> ->

<- <- Power 

Power -> ->

<- <- Brew Switch 

Brew Switch -> ->

Left Hidden 

DONE

(-) (+)

1.  Place brew funnel(s) into rails on the brewer (both 

sides on DUAL brewers).

2.  Place server(s) beneath the brew funnel(s).

3.  Press and hold the upper right hidden switch until 

display reads 

SET LANGUAGE. 

Release the switch. 

Continue to press and release switch until 

SERVICE 

TOOLS

 appears.

4.  Press and release 

YES. 

The display should read 

TEST OUTPUTS?.  

Press and release 

NO

 to advance 

to 

TEST SWITCHES

.

5. Pressing 

NO

 in this screen will advance to the

 

next function. Press 

YES

 in the 

TEST SWITCHES

 

screen to test the switches. The display will read 

NOTHING PRESSED

.

6.  From this screen, press any of the switches on the 

front of the brewer except the upper right hidden 

switch.  While the switch is pressed, the display 

shows the name of that switch.  If the name does 

not appear, or if it remains after the switch has been 

released, the switch is defective.  Each switch can 

be tested in this manner.

7.  After all switches have been tested, press and re-

lease the right hidden switch (®). This will return 

to 

TEST SWITCHES?

. To exit programming, press 

and release the ON/OFF switch (either on DUAL 

brewers) located on the front switch panel. This 

will exit 

TEST SWITCHES

 and return to the 

MAIN 

SCREEN.

NOTE: 

If the operator wishes to test more than one 

function in the 

SERVICE TOOLS

 section (outputs or 

switches), it is not necessary to exit the program. 

Use the flow chart for 

SERVICE TOOLS

 to navigate 

to a particular function.

41747 112608

RELEASED FOR PRODUCTION

DIR Num: 41747.0000             12, December 2018

Summary of Contents for TITAN SINGLE

Page 1: ...POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 PHONE 217 529 6601 FAX 217 529 6644 www bunn com 41747 0000D 10 18 2008 Bunn O Matic Corporation ENA BLE I O TITAN ENA BLE ENA BLE I O BRE W I O B...

Page 2: ...hether oral or written do not constitute warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warranty BUNN at its exclusive op...

Page 3: ...brewing process such as brew tempera ture brew volumes bypass percentages pulse brew etc Other features are Energy Savings mode Freshness Timer and Clean Alert CONTENTS Warranty 2 Table of Contents 3...

Page 4: ...ion is encountered the cause will likely be a switch contact or a loose connection at a terminal or crimp Solenoid removal requires interrupting the water supply to the valve Damage may result if sole...

Page 5: ...con nection 1 Temperature Sensor Probe wire s shorted to housing or to each other 1 No power or incorrect voltage A Wait for the brewer to heat to the proper temperature B Disable the BREW LOCKOUT fun...

Page 6: ...ch procedures on page 17 Test the brew valve Refer to the testoutputsproceduresonpage15 Substitute a control board known to be in good working order Checkplumbingandshut offvalves Remove the strainer...

Page 7: ...te that theleftnumberchangesfromahigh value when water is NOT touching the refill probe to a low valve when water IS touching the probe For best operation the right number should be set to a value mid...

Page 8: ...tage should be present at the solenoid terminals If voltage is not present refer to the wiring schematic and check the wiring harness Substitute a control board known to be in good working order ON OF...

Page 9: ...nedontofillthetank Theright numberisthethresholdsettingand can be adjusted to compensate for extremewaterconditions verypure low conductance water requires a higher setting while high mineral content...

Page 10: ...OHMS at 70 F 21 C the reading should be 11 8k 2k OHMS and at 80 F 27 C the reading should be 9 3k 2k OHMS If the probe is withintheseparameters reconnect to the control board Remove power from the bre...

Page 11: ...ector At 60 F 16 C the reading should be 15 3k 2k OHMS at 70 F 21 C the reading should be 11 8k 2k OHMS and at 80 F 27 C the reading should be 9 3k 2k OHMS If the probe is withintheseparameters reconn...

Page 12: ...fbypassisbeingusedontheincon sistent brew test the bypass valve Refer to test outputs on page 15 Turnthevalveonfor30secondsand collect the water collected from the funnel Repeatthetestseveraltimes to...

Page 13: ...cycle The mounting screws on the so lenoids must be tight or they will vibrate during operation Plumbinglinesshouldnotberesting on the countertop The brewer must be connected to a cold water line Wat...

Page 14: ...funnel and the bed of grounds leveled by gently shak ing Use the four wire loops on the funnel to hold filter in place while brewing Empty the server remove its cover and place the server beneath the...

Page 15: ...ing the previous one 8 The display should now read BYPASS VALVE on SINGLE brewers BYPASS VALVE on DUAL brewers To test the left bypass valve press ON If the bypass valve is functional water should run...

Page 16: ...ASS ON NEXT OFF RIGHT FUNEL LOCK ON NEXT OFF REFILL VALVE ON NEXT OFF TANK HEATR RELAY ON NEXT OFF BREW VALVE ON NEXT OFF BYPASS ON NEXT OFF FUNNEL LOCK ON NEXT OFF SINGLE BREWERS DUAL BREWERS EXIT TO...

Page 17: ...in the TEST SWITCHES screen to test the switches The display will read NOTHING PRESSED 6 From this screen press any of the switches on the front of the brewer except the upper right hidden switch Whil...

Page 18: ...2 With the power connected to brewer the voltage reading to the board should be the line voltage rated for that model If no voltage is present check wiring to the board If voltage is present and brew...

Page 19: ...hree commons in this circuit pins 9 10 21 Disconnect brewer from power source before discon necting ribbon cable from control board Removal and Replacement 1 Disconnecttheribboncablefrom22 pinconnecto...

Page 20: ...Diagrams and check the brewer wiring harness Also check the control board and switch for proper operation Removal and Replacement 1 Disconnect the brewer from the power source 2 Disconnect wires from...

Page 21: ...valve in the test mode With a voltmeter check the voltage across the coil wires 3 Theindicationmustbe120voltsacfor120 208and 120 240 volt models or 230 volts ac for 230 400 volt models If voltage is p...

Page 22: ...placement 1 Remove the top cover from the brewer 2 Disconnect the wires from tank heater terminals 3 Remove the four 8 32 nuts securing the tank heater s to the tank lid assembly 4 Removetankheater s...

Page 23: ...sent as described proceed to 4 4 Disconnect temperature probe from J13 on con trol board Check the resistance across the two terminalsofthetemperatureprobe Theindication should be aproximately between...

Page 24: ...be 208 volts ac for 120 208 volt models 240 volts ac for 120 240 volt models or 230 volts ac for 230 400 volt models 7 Disconnect the brewer from the power source If voltage is present as described p...

Page 25: ...FUNNEL LOCK Optional BRN BLK BRN WHI SOL SOL DISPENSE TRANSFORMER 10VA J16 1 J16 5 J20 1 J20 3 LEFT FULL LEFT FULL LEFT HALF LEFT HALF LEFT ON OFF LEFT ON OFF RIGHT BREW C LEFT BREW A RIGHT PROG LEFT...

Page 26: ...F LEFT ON OFF RIGHT BREW C LEFT BREW A RIGHT PROG LEFT BREW C RIGHT FULL RIGHT FULL RIGHT HALF RIGHT HALF RIGHT ON OFF RIGHT ON OFF LEFT BREW B TANK HEATER 1 CONTACTOR BLK 12 BLU 12 RED 12 BLK 12 VIO...

Page 27: ...RED RED WHI GRN LEVEL PROBE t J13 1 SWEETENER INJECTOR SOL SOL FUNNEL LOCK Optional BRN BLK BRN WHI SOL SOL DISPENSE TRANSFORMER 10VA J16 1 J16 5 J20 1 J20 3 LEFT FULL LEFT FULL LEFT HALF LEFT HALF L...

Page 28: ...T FUNNEL LOCK Optional BRN BLK BRN WHI SOL RIGHT FUNNEL LOCK Optional BLU BLU BLK SOL SOL WHI RIGHT BYPASS SOL WHI ORN LEFT DISPENSE SOL TRANSFORMER 10VA J16 1 J16 5 J20 1 J20 3 LEFT FULL LEFT FULL LE...

Page 29: ...K Optional BLU BLU BLK SOL SOL WHI RIGHT BYPASS SOL WHI ORN LEFT DISPENSE SOL TRANSFORMER 10VA J16 1 J16 5 J20 1 J20 3 LEFT FULL LEFT FULL LEFT HALF LEFT HALF LEFT ON OFF LEFT ON OFF RIGHT BREW C LEFT...

Page 30: ...FUNNEL LOCK Optional BLU BLU BLK SOL SOL WHI RIGHT BYPASS SOL WHI ORN LEFT DISPENSE SOL TRANSFORMER 10VA J16 1 J16 5 J20 1 J20 3 LEFT FULL LEFT FULL LEFT HALF LEFT HALF LEFT ON OFF LEFT ON OFF RIGHT B...

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