Troubleshooting - Fetco CBS-31A User Manual

Brewing Problem
Brew switch will not start brew cycle (no water
is dispensed)
and brew light does not come on,
even when switch is pressed in.
and brew light does not stay on.
(Light is on only while switch is
pressed in.)
Brew switch will not start brew cycle (no water
is dispensed)
and brew light does come on.
Short brew levels EVERY BREW
(One or both sides are affected and levels are
consistent)
Short brew levels SOME BREWS
(One or Both sides are affected and levels are
erratic)
Brew time required to fill dispensers is not
the same for both sides
High brew levels EVERY BREW
(overfills but eventually does stop)
SOME BREWS
Brew basket or filter overflows
Weak Coffee
Grounds not saturated
Spray head / brew basket drips - MAJOR or
Spray head / brew basket drips - MAJOR or
double brewers - right side only

Troubleshooting

Possible Cause
No power to the brewer
(Brewer lights are not illuminated)
Bad brew switch
Bad timer or stop switch. (The
stop switch provides voltage to
the timer.)
No water reaching the brewer.
Verify by dispensing water from
hot water faucet for several
seconds. Water should flow
freely and steadily.
Bad dispense valve. (Brewer may
buzz when in brew cycle)
Water filter clogged
Dispense valve clogged
Timer/s are set too low
Incoming Voltage is too low for
timers to function at proper time
sequences
Water filter clogged.
(problem is worse during
simultaneous brews)
Weak dispense valve
(may buzz during cycle)
Water pressure or flow rate is too
low or fluctuates too much to
support a full brew.
(problem is worse during
simultaneous brews)
Brewer is not level
Timer/s are set too high
Dispenser not empty
Improper dose
Too many filter papers
Low brew temperature
(Temperature inside the hot
water tank should be set to 205°
F.)
Half batch used incorrectly
Water Softener in use
Degassing - extremely fresh
coffee
Dispense valve not sealing
properly.
MINOR
one side only
Fill valve not sealing
(Will drip even with power off.)
MINOR
Solution
-Make sure power switch is on
-Check power connection. (plug or hard wire
connection)
-Check the wall circuit breaker / reset
-Reset the circuit breaker, located on the back of the
brewer. Press and release the white button.
-Replace switch.
-Check for voltage reaching the timer. If voltage is
present, replace timer. If not, replace stop switch.
-Make sure the shut off valve is open.
-Check water line for kinks; replace line if necessary
-Check to see if filter is clogged by changing it.
-Replace the dispense valve
(See details in next section)
-Clean and/or replace the dispense valve.
-Advance timers to proper level.
-Reset wall circuit breaker as one side may drop out &
not flag the breaker.
-Call an electrician to find loose connections in the
building
-Replace water filter
-Replace dispense valve.
-Make sure brewer has a dedicated water line
-Ensure that the shut off valve is open all the way
(Never use needle saddle valves)
-Increase the diameter of the water line to the brewer
and or find stable source.
-With an accurate level, level the brewer front to back
and left to right by adjusting the feet.
-Adjust timers down to appropriate level
-Empty the dispenser and try again
-Call FETCO Service Dept. to discuss.
(800) 338-2699
-Measure and confirm correct dose
-Make sure only one paper is used
-Adjust thermostat so the water stream measured at
the bottom of the brew basket, 1/3 of the way
through the brew cycle, equals 195 degrees + or - 5
degrees
-Use smaller brew basket
-Discourage half batch use
-Move brewer water feed to a non-softened source.
-Call FETCO Service Dept. to discuss.
(800) 338-2699
-Clean, rebuild, or replace dispense valve.
-See next section - "Brewer won't stop brewing", "Bad
or stuck fill valve".
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