Bunn-O-Matic Corporation
29
spitting or excessive steaMing
(cont.)
3. control board
Check/replace
breWer is Making unusual noises 1. pluMbing lines
Plumbing lines should not rest on the counter
top.
“ “ 2. Water supply
The brewer must be connected to a cold
water supply.
“ “ 3. liMe build up
Remove the tank lid and clean inside of tank
with a deliming agent, if necessary.
Troubleshooting the Brewing Circuit
breW cycle Will not start 1. display’s error Message
Brewer has shut down due to malfunction.
See Service Fault Messages section in
this manual
“ “ 2. no Water
Water lines and valves to the brewer must
be open
“ “ 3. no poWer or incorrect
voltage to the breWer
Check for voltage across the terminals at
the terminal block.
“ “ 4. on/off sWitch not in the
“on” position
The indicator lamp must be lit
“ “ 5. loW Water teMperature
(breW lockout is enabled)
Allow brewer to heat until ready, or dis-
able the brew lockout feature.
“ “ 6. Water not touching refill
probe inside tank
Watermustbeincontactwithrellprobe
before brew cycle will start.
“ “ 7. MeMbrane sWitch
Check/replace
“ “ 8. dispense valve
Check/replace
“ “ 9. control board
Check/replace
consistently loW beverage
level in the dispenser or bev-
erage overfloWs dispenser
1. breW voluMe
NOTE: Volume adjustments
must be made with sprayhead
installed.
Calibrate Sprayhead
“ “ 2. liMe build up
Inspect the dispense valve and sprayhead
for excessive lime deposits. Delime as
required.
“ “ 3. dispense valve
Remove dispense valve and clear any
obstructions. Rebuild or replace valve if
necessary.
breW cycle starts, then
aborts and returns to Main
screen after 20 seconds
1. level probes shorted
Ensure mylar shield(s) are installed on top
cover
dripping froM sprayhead 1. liMe build up
Inspect the tank assembly for excessive
lime deposits. Delime as required.
2. dispense valve
Check/replace
Weak beverage 1. sprayhead
A clean sprayhead must be used for
proper extraction.
Heating Circuit (cont.)
probleM probable cause reMedy
probleM probable cause reMedy
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