PROGRAMMING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
41154.0000B 12/09 ©2008 Bunn-O-Matic Corporation
BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY
Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:
1) All equipment other than as specified below: 2 years parts and 1 year labor.
2) Electronic circuit and/or control boards: parts and labor for 3 years.
3) Compressors on refrigeration equipment: 5 years parts and 1 year labor.
4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis:
parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.
These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by
it will be commercially free of defects in material and workmanship existing at the time of manufacture and
appearing within the applicable warranty period. This warranty does not apply to any equipment, component or
part that was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect,
alteration, improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is
conditioned on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone
at (217) 529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by
BUNN, shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior
authorization from BUNN that the defective equipment is under warranty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN
are not authorized to make modifications to this warranty or to make additional warranties that are binding on
BUNN. Accordingly, statements by such individuals, whether 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 option while the equipment is under warranty, shall either 1) provide at no charge replacement parts
and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective
components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace
the equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF
THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S
SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales,
loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute
equipment, facilities or services, or any other special, incidental or consequential damages.
AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, BrewWISE, BrewWIZARD, BUNN Espress,
BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with the stylized red line, BUNNlink,
Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, Cool Froth, DBC, Dr.
Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet Juice, High
Intensity, iMIX, Infusion Series, Intellisteam, My Café, PowerLogic, Quality Beverage Equipment Worldwide,
Safety-Fresh, savemycoffee.com, Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE,
Soft Heat, SplashGard, The Mark of Quality in Beverage Equipment Worldwide, ThermoFresh, 392, Beverage Bar
Creator, Beverage Profit Calculator, BUNNSource, Coffee At Its Best, Digital Brewer Control, Nothing Brews Like
a BUNN, Pouring Profits, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Signature
Series, Tea At Its Best, The Horizontal Red Line, Titan, Ultra are either trademarks or registered trademarks of
Bunn-O-Matic Corporation.
Page 2
41154 110909
INTRODUCTION
This equipment will brew a 1⁄2 gallon batch of coffee into an awaiting decanter. The brewer may have
a hot water faucet for allied beverage use. It is only for indoor use on a sturdy counter or shelf.
CONTENTS
Adjustments & Programming ................................................................ 4
Troubleshooting ................................................................................... 14
Page 3
41154 041708
ADJUSTMENTS & PROGRAMMING
PROGRAMMING THE BREWER
The programming of the brewer is divided into two levels. Brewing adjustments are in "BrewWizard". Service functions are accessed in Level 2.
The following function screens are in order of appearance. Each screen will have instructions on
how to access, and the procedures to program the various functions of the brewer.
IMPORTANT PROGRAMMING NOTES
- READ CAREFULLY -
To exit the programming mode at any time, press and release "ENABLE BREW ON/OFF" switch
located on the front switch panel. The display will return to the MAIN SCREEN.
If none of the five programming switches are pressed within one minute during the setup of the
brewer, the programming of the function screen that is being set will be exited and the display will
return to the MAIN SCREEN.
Always remember to place an empty server and funnel under the sprayhead when operating the
brewer during the set-up of PULSE BREW, CALIBRATE FLOW and testing the brew valve in SERVICE TOOLS/TEST OUTPUTS.
PROGRAM FUNCTIONS - BREW WIZARD
MAIN SCREEN
READY TO BREW
WATER TEMP: 200°
PROGRAMMING LOCKOUT SWITCH
(Mounted on main control board)
This switch can be set to prevent access to the
programming settings of the brewer. Once all
the correct brew settings are programmed, the
operator can set the switch to the "ON" position to
prohibit anyone from changing the settings. With
the switch in the "ON" position, the programming
menus can still be accessed to view the current
settings. However, no changes will be saved.
BREW LOCKOUT
This function allows the operator to prevent
or allow brewing if the water temperature is less
than the set READY temperature.
To access this function screen press and hold
the right hidden switch. Release when the display
reads: "BREW WIZARD" it will then read:
BREW LOCKOUT?
NO DONE YES
Press here
for NO
Press here
for DONE
Press here
for YES
P3634
Disconnect brewer from
po wer source before
removing any panel!
Page 4
The YES or NO should be flashing. Select YES
to prevent brewing if the water temperature is
below the set READY temperature. Select NO
to permit brewing at any water temperature.
When finished, press and release DONE. This
will step to the next function screen. To return
to the MAIN SCREEN at any time, press and
release "ENABLE BREW ON/OFF".
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
PROGRAMMING FUNCTIONS - BrewWIZARD (cont.)
The functions in the "BrewWIZARD" allow the operator to adjust brew settings and other features.
BREW OZ:
This function allows the operator to adjust the brew volume.
Procedure:
1. Press and hold the right hidden switch until the display reads "BrewWIZARD" and release.
2. The display will then read: "BREW OZ: xx.x"
3. Press (-) "Digital" to decrease the amount, or (+) "Control" to increase.
Range: (10 to 192 oz., in .5 oz. increments) or (.30 to 6.60 Liters, in .01 increments)
4. When finished, press "DONE". This will take you to the next screen. Press and release the right
hidden switch to continue to the next screen, or press and release the "ENABLE BREW ON/OFF"
switch to return to the main screen.
BREW OZ: 64.0
(-) DONE (+)
BREW METER:
This function allows the operator to adjust the brew strength/extraction time. Setting #1 will produce
a non-pulsed brew cycle and the highest (#14) will give you the longest time (utilizing pulse brew).
Procedure:
1. Press and hold the right hidden switch until the display reads "BrewWIZARD" and release.
2. The display will then read: "BREW OZ: xx.x"
3. Press and release the right hidden switch until the display reads "BREW METER"
4. Press (-) to decrease the amount, or (+) to increase. (Range: 1 - 14)
5. When finished, press and release the right hidden switch. This will take you to the next screen,
or press and release the "ENABLE BREW ON/OFF" switch to return to the main screen.
Weakest (Shortest) Strongest (Longest)
BREW METER 1
- +
BREW METER 14
- +
NOTE: This will overwrite settings in "PULSE BREW"
Page 5
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
ENABLE ADS
This function allows the operator to choose whether or not to display an advertising message. An
ad can be saved to the brewer by writing the ad
using the programming commands. This message
will be displayed when the brewer is idle.
Procedure to Enable/Disable Ads:
1. Press and hold the right hidden switch until
the display reads "BrewWIZARD" then release.
Press and release the right hidden switch until
the display reads "ENABLE ADS ?". The "YES"
or "NO" will be flashing to indicate the current
selection.
2. Press and release the "NO" switch to disable
this function, or:
3. Press and release the "YES" switch to enable
this function.
4. When finished, press and release "DONE" to
save the new setting and advance to the next
function screen.
5. If "NO" was selected, the display should now
read "ENTER SERVICE #?". To exit programming and return to the MAIN SCREEN, press
and release the "ENABLE BREW ON/OFF"
switch.
6. If "YES" was selected, the display should now
read "NEW AD?". This screen allows you to
write a new ad.
7. The display should now read "2 LINES 16
CHARS AVAILABLE", and then "SCROL
THRU ALPHA, NEXT -> NEXT LETTER", and
then "WRITE TOP LINE?". The ad can be up
to 32 characters long, 16 per line. The ad will
be written in two steps, first the top line, then
the bottom line.
9. To write the top line of a new ad, press and
release "YES". To skip the top line and only
write a bottom line, press and release "NO"
and proceed to step 13. To exit programming and return to the MAIN SCREEN, press
and release the "ENABLE BREW ON/OFF"
switch.
10. The display will now read "A" with a flashing
cursor below it. Press and hold the "SCROLL"
switch to scroll through the alphabet and avail-
able characters. When the desired character
is shown on the display, press and release
"NEXT" to move to the next character in the
top line.
11. Repeat step 10 until the top line is complete.
12. Press and release "DONE". The display should
now read "WRITE BTM LINE?".
13. To write the bottom line of the new ad, press
and release "YES".
14. To skip the bottom line, press and release
"NO".
a. If neither a top nor bottom line was writ-
ten, the display should now read "ENTER
SERVICE #?".
b. If only a top line was written, the ad will
be displayed followed by "SAVE?" Proceed to
step 18.
15. The display will now read A with a flashing
cursor below it. Press and hold the "SCROLL"
switch to scroll through the alphabet and available characters. When the desired character
is shown on the display, press and release
"NEXT" to move to the next character in the
bottom line.
16. Repeat step 15 until the bottom line is complete.
17. Press and release "DONE". The display will
now show the written ad, and then "SAVE?"
18. To cancel saving the ad, press and release
"NO". The display should now read "ADVERTISEMENT NOT SAVED!" and then will return
to the "NEW AD" screen. To exit programming and return to the MAIN SCREEN, press
and release the "ENABLE BREW ON/OFF"
switch.
19. To correct or edit the ad, press and release
"EDIT". The display should now read "WRITE
TOP LINE?" Repeat steps 10 though 17.
20. To save the ad as it is shown, press and release "YES". The display should now read
"ADVERTISEMENT SETUP COMPLETE",
and then "ENTER SERVICE #?". To exit programming and return to the MAIN SCREEN,
press and release the "ENABLE BREW ON/
OFF" switch.
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41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
ENABLE ADS ?
NO DONE YES
NEW AD ?
NO YES
NOTE: The available characters are:
A through Z
0 through 9
! " # $ % & ' ( ) * + , - . / : ; < = > ? @
2 LINES 16 CHARS
AVAILABLE
SCROL THRU ALPHA
NEXT NEXT LETTER
WRITE BTM LINE ?
NO YES
ENTER SERVICE #?
WRITE TOP LINE ?
NO YES
A
SCROLL DONE NEXT
SAVE ?
NO EDIT YES
ADVERTISEMENT
NOT SAVED !
Page 7
ADVERTISEMENT
SETUP COMPLETE
ENTER SERVICE #?
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
SERVICE NUMBER
This function allows the operator to enter in the
telephone number to call if service is needed. The
service number will be displayed anytime there
is a fault message displayed.
Procedure to enter the service number:
1. Press and hold the right hidden switch until
the display reads "BrewWIZARD" then release.
Press and release the right hidden switch until
the display reads: "ENTER SERVICE #?"
2. Press and release "YES" switch. The display
will now read "SCROL THRU #'S NEXT - >
NEXT NUMBER", followed by "SCROLL
DONE NEXT".
3. Press the "SCROLL" switch to increment the
number. When the desired number is shown,
press and release the "NEXT" switch to move
to the next digit in the phone number.
4. Repeat Step 3 until the entire number is entered.
5. Press and release the "DONE" switch. The
display will now read "EXITING BrewWIZARD"
and then "ENTER PASSWORD".
ENTER SERVICE #?
NO YES
SCROL THRU #'s
NEXT NEXT NUMBER
SCROLL DONE NEXT
PROGRAMMING FUNCTIONS - LEVEL 2
ENTER PASSWORD
This function allows the operator to enter a 3
digit number to access LEVEL 2. If no number
has been pre programmed (0 0 0), then access
is allowed by pressing and releasing the right
hidden switch.
Procedure to enter the "PASSWORD":
1. Press and release the "Digital" switch to increment the first digit.
2. Press and release the "Brewer" switch to
increment the second digit.
3. Press and release the "Control" switch to
increment the third digit.
4. Press and release the right hidden switch. If
the correct password was entered, the display
will now read "SET PASSWORD". If the wrong
password was entered, the unit will revert back
to the main screen.
EXITING
BrewWIZARD
ENTER PASSWORD
0 0 0
Page 8
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
NOTE: Access to the remaining functions in LEVEL 2 is intended for trained service personnel only.
More in depth information can be found in the Axiom Service Manual 39132.0000
SET PASSWORD
0 0 0
SET LANGUAGE
NO YES
UNITS
METRIC DONE ENG
SET TEMP: 200°
(-) DONE (+)
Any 3 digit number may be programmed to prevent unauthorized access of LEVEL 2. BE CAREFUL TO USE A CODE YOU WILL
REMEMBER!
Choose between English or Spanish. After selecting "YES",
press either ( + ) or ( - ) to select, then choose "YES" again
when asked, "ARE YOU SURE?"
Choose between English or Metric units. Display will read:
"CHANGING UNITS WILL CAUSE" "ALL SETUP INFO TO BE
LOST" "ARE YOU SURE?" "NO YES". NOTE: If the brewer
is set for Metric Units, displays will be different. (ex: Brew oz
will become Brew Liters, ° F will be ° C).
Adjusts brew tank temperature.
RANGE: (185 to 205° F) or (85 to 96° C)
SET READY: 195°
(-) DONE (+)
ENTER ASSET # ?
NO YES
This function sets the minimum temperature allowable to start
a brew cycle. Range: (2° to 20° F) or (2° to 10° C) below the set
temperature. The water must be at the "READY" temperature
or higher for the display to indicate "READY TO BREW".
This function allows the you to enter in an optional asset number. This can be useful for tracking the usage or service of an
individual machine within a group.
Page 9
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
"EASY PULSE BREW" times:
Min: Base brew time + 40 seconds
Max: Base brew time + 3:00 minutes
SET PULSE BREW ?
NO YES
DRIP TIME 0:30
(-) DONE (+)
ENABLE CLEAN
NO DONE YES
Enabl EnergySavr
NO DONE YES
This function allows the sprayhead to “pulse” on and off during a brew cycle. These times can be set two different ways.
The first is by setting the total brew time in the "EASY PULSE
BREW" screen. The other option allows the actual times to be
entered in the "MANUAL PULSE BREW" screen.
NOTE: This will overwrite settings in "BREW METER".
Adjusts the DRIP TIME (time from end of sprayhead flow to
when liquid stops dripping from the funnel). When the brew
cycle is complete, the display will show "DRIPPING" and will
countdown the time until the funnel empties.
RANGE: "OFF" or 0:05 to 4:00 minutes
Set the time before a cleaning alert will be displayed.
RANGE: 1 to 30 days
Enables the mode function and sets the idle time. Then choose
to have the tank heater(s) turn off, or reduce the tank temp to
(140° F) or (60° C) once the set idle time has expired.
Range: 0.5 to 24.0 hrs
EnableFreshTimer
NO DONE YES
ENABL WARMER OFF
NO DONE YES
0 REFILL 155
(-) DONE (+)
Enables the "FRESHNESS ALERT!" message and sets the
expiration time. The expiration time is the amount of time the
product is allowed to sit in the server before an alert message
is displayed.
Range: 0.5 to 4.0 hrs
Sets the amount of time a warmer will remain on after being
turned on. Each warmer has an independent timer and is affected by its corresponding switch. NOTE: The lower "Brew"
warmer timer is restarted when brew switch is pressed. Range:
15mins to 6.0 hrs in 15 min increments.
Adjusts the sensitivity of the refill circuit. Water in different
geographical locations can have different conductivities. Make
sure the water in the tank is touching the refill probe. NOTE:
Always make sure that the # on the right is larger than the #
on the left when water is contacting the tank refill probe.
Page 10
41154 041708
ADJUSTMENTS & OPTIONAL SETTINGS (CONT.)
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
ENABLE BrewLOGIC
NO DONE YES
Go to
SPRAY OZ/M:
PLACE BREWER IN
FINAL LOCATION
CALIBRATE NOW?
NO YES
ACCURACY RISK!!!
OK CAL.
The BrewLogic system allows the brewer to be calibrated to
high mineral locations and compensate as deposits build up
internally. Press YES, then press DONE. Follow the prompts.
Pertains only to software version 1.07 & above!
Select a sturdy, level location.
Brewer must not be bumped during calibration!
Select YES for calibration. Selecting NO warns of accuracy
risk
Select CAL. to start calibration procedure. Selecting OK will
skip to level probe calibration screen.
Go to CAL
LP1-LP2
TOO HOT-WILL
COOL TANK NOW
PRESS BREW WHEN
CONTAINER READY
COOLING TANK
PLEASE WAIT
Automatically checks to see if tank temperature is between
130°-170°F (54°-76°C)
Verify brew funnel and decanter/airpot/thermal server (depending on which model you have) are in place. Then press the
"BREW START" button.
Message will be displayed while dispense is being performed.
Tank heaters are turned off and the unit will dispense for ~1
minute to cool tank temperature.
(CONT.)
Page 11
41154 041708
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
CONTAINER READY?
QUIT YES
Go to CAL
LP1-LP2
CALIBRATE SPRAY
PRESS BREW START
WaitingTilCycle 4
CYCLE x COMPLETE
ENTER OZ XX.X
(-) DONE (+)
When the dispensing finishes, empty the decanter/server and
place back under brew funnel.
Select YES for calibration. Selecting QUIT will skip to level
probe calibration screen.
Press the "BREW START" button. Will perform the sprayhead
flow-rate calibration as well as the level probe calibration.
Brewer must not be bumped during calibration!
Machine will dispense volume between upper probe and
lower probe 4 times. (The total dispense will be about half of
a decanter)
Brewer must not be bumped during calibration!
Enter volume dispensed into container.
Use the (+) to increase the numeric value or (-) to decrease.
SPRAY OZ/M: XX.X
LP1-LP2 OZ XX.X
CALIBRATE LP1-LP2
NO YES
Go to BREW
COUNTERS
Go to CAL
LP1-LP2
Displays sprayhead flow-rate and volume of water between
the upper and lower level probes.
Allows you to perform calibration again if you want to verify
results.
Page 12
41154 041708
PROGRAMMING FUNCTIONS - LEVEL 2 (cont.)
SPRAY OZ/M: 25.0
(-) DONE (+)
CALIBRATE FLOW ?
NO YES
BREW COUNTERS ?
NO YES
SERVICE TOOLS ?
NO YES
View or enter the actual flow rate coming out of the sprayhead.
This is used to tell the internal controller how fast the water
is flowing. Use the "CALIBRATE FLOW" screen to obtain the
most current flow rate.
Range: (3.0 to 75.0 oz) or (100 to 2200ml)
This function provides a 60 second test mode to capture
water from the sprayhead. This measurement will then give
you the numbers to enter into the "SPRAY OZ/M: xx" screen
above.NOTE: Should be performed after deliming and/or
changing sprayhead. (Will not display when "BrewLogic"
is enabled)
Tracks the total number of brew cycles completed. There is one
reset-able counter, and one life counter that is not reset-able
Allows the testing of individual components and the ability to
check the membrane switches for proper function. (Diagnostic
tool for troubleshooting purposes only)
FACTORY DEFAULTS
NO YES
sage, calibrations, etc. Factory-set default values will replace
ALL previous settings.
NOTE: Items not affected; Service #, Password, Language,
Units, Asset #, Counters and Serial Number.
INITIAL FACTORY DEFAULT VALUES
Brew Lockout NO
BREW 64 OZ (2.0L)
BREW METER 1
ENABLE ADS NO
PASSWORD 0
Language English
Units English
SET TEMP 200° F (93° C)
SET READY 195° F (90° C)
ENTER ASSET # - 0
PULSE BREW - DISABLED
DRIP TIME - 0:30
ENABLE CLEAN - NO
Reset ALL of the previously entered brew settings, ad mes-
ENABLE ENERGY SAVER - NO
ENABLE FRESH TIMER - NO
ENABLE WARMER OFF - NO
REFILL - 155
SPRAY 25.0 oz/M (739ml/M)
BrewLogic OFF
Page 13
Software Version 1.07 & above
41154 041708
TROUBLESHOOTING
PROBABLE CAUSE REMEDYPROBLEM
Temperature Too Low
Heating Time Too Long
Fill Time Too Long
1. Water temperature in the
tank does not meet the ready
temperature.
1. Tank Heater failure.
2. Control Board/Thermistor
failure
1. Water shut off to brewer
2. Supply line too small or obstructed
3. Inlet Solenoid failure
4. Control Board Failure
A) Wait for the brewer to heat
to the proper temperature.
B) Disable the BREW LOCKOUT function. Refer to programming section for procedure.
Service required
Service required
Check water supply shut-off
Replace or repair as needed
Service Required
Service Required
Temp Sensor Out Of Range,
Check For Bad Connections
Temp Sensor Out Of Range,
Check Wire For Shorts
Equipment will not operate
Water flows into tank continuously with power removed from
brewer.
5. ON/OFF switch is OFF
1. Temperature Sensor Probe
wire(s) broken or not making
connection
1. Temperature Sensor Probe
wire(s) shorted to housing or
to each other.
1. No power
2. Incorrect voltage
1. Refill valve
Turn switch ON
Service required
Service required
Verify power cord is plugged
into outlet.
Service required
Service required
Page 14
41154 041708
TROUBLESHOOTING (cont.)
PROBABLE CAUSE REMEDYPROBLEM
Brew cycle will not start
Spitting or unusual steaming
from sprayhead or air vent.
1. No water
2. Water temperature in the
tank does not meet the ready
temperature.
3. "ENABLE BREW ON/OFF"
switch not on.
4. Brew switch
5. Brew valve
6. Control Board
1. Lime buildup
2. Temperature probe
Check plumbing and shut-off
valves
A) Wait for the brewer to heat
to the proper temperature
B) Disable the BREW LOCKOUT function. Refer to programming section for procedure.
Turn on
Service required
Service required
Service required
Refer to cleaning section.
Service required
3. Control Board
Inconsistent beverage level Refer to cleaning section.
1. Lime buildup
2. Brew valve
Dripping from sprayhead.
Water overflows filter.
1. Brew valve
1. Type of paper filter
Service required
Service required
Service required
BUNN paper filters should be
used for proper extraction
Replace sprayhead
The brew cycle should be started only with an empty decanter
Beverage overflows decanter
2. No sprayhead
1. Beverage left in decanter from
previous brew
under the funnel.
2. Brew volume adjustment
Adjust the brew volume, calibrate sprayhead as required to
achieve the desired volume for
each brew cycle.
Page 15
41154 041708
TROUBLESHOOTING (cont.)
PROBABLE CAUSE REMEDYPROBLEM
Weak beverage. BUNN paper filters should be
1. Type of paper filter
used for proper extraction
2. Coffee
For coffee, a sufficient quantity
of fresh drip or regular grind
should be used for proper extraction.
3. Sprayhead
A BUNN sprayhead should be
used to properly wet the bed of
ground coffee in the funnel
4. Funnel Loading
The BUNN paper filter should
be centered in the funnel and
the bed of grounds leveled by
gently shaking.
5. Water temperature
Place empty funnel on top of an
empty server (not in the funnel
rails). NOTE: Do not remove
sprayhead!
WARNING: HOT WATER
Press brew. Check water temperature immediately below the
sprayhead with a thermometer.
Recommended reading should
be at least 195°F (90°C).
6. Incorrect recipe
Page 16
Consider adjusting brew volume, and/or BREW METER.
41154 041708
TROUBLESHOOTING (cont.)
PROBABLE CAUSE REMEDYPROBLEM
Brewer is making unusual
noises.
"CHECK SPRAYHEAD FOR
LIME" - "CHECK FITTINGS
FOR LIME"
1. Solenoids vibrating
2. Plumbing lines
3. Water supply
4. Tank heaters
1. Lime buildup in sprayhead
2. Lime buildup in brew valve
3. Lime buildup in brew tank
Service required.
Plumbing lines should not be
resting on the countertop.
The brewer must be connected
to a cold water line. Water pressure to the brewer must not be
higher than 90 psi (620 kPa).
Install a regulator if necessary
to lower the working pressure
to approximately 50 psi (345
kPa).
Service required.
Refer to cleaning section.
Refer to cleaning section.
Service required.
"WARNING INACCUR ATE
FLOW" - "TOO MUCH LIME
PLEASE REPAIR"
"WARNING VERY LOW FLOW"
- "PLEASE REPAIR"
1. Lime buildup in sprayhead
2. Lime buildup in brew valve
3. Lime buildup in brew tank
1. Lime buildup in sprayhead
2. Lime buildup in brew valve
3. Lime buildup in brew tank
Refer to cleaning section.
Refer to cleaning section.
Service required.
Refer to cleaning section.
Refer to cleaning section.
Service required.
Page 17
41154 041708
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