Bunn F-20 Coffeemaker User Manual


 
FACTORY AUTHORIZED SERVICE
'0551 BLE CAUSE WHAT TO CHECK
REMEDY
NO HOT
WATER
1. Tank heater
2. Limit Thermostat or
Control Thermostat.
1. Voltage at tank heater
terminals with control
thermostat knob in the
fully clockwise position.
Voltage should be:
Model F35
240 volts A.C.
Models F20 and F15
120 volts A.C.
2. With control thermostat
knob in the fully clockwise
position, check the
voltage between the
white (or red) wire on
the tank heater terminal
and the incoming
terminal (black wire)
on the limit thermostat,
then the outgoing (blue
wire) terminal on the
limit thermostat. Voltage
should be: Models
F15 and F20, 120 volts
A.C. Model F35,
240 volts A.C.
1. If correct voltage is
present at the tank
heater terminals and
water in tank is not being
heated, replace tank
heater.
If voltage is not present
at tank heater termina Is,
refer to step 2.
If incorrect voltage
is present on tank
heater terminals, refer
to "Electrician's
Installation Instructions."
2. (A) If voltage is present
on incoming terminal
(black wire) on the limit
thermostat, but not on the
outgoing terminal, (blue
wire) replace limit
thermostat.
(B) If voltage is present
on both terminals on the
limit thermostat, but not
across tank heater
terminals, replace control
thermostat.
(C) If voltage is not
present on the incoming
terminal on the limit
thermostat, refer to "No
Power" Section.
STEAMING
1.
Control 1.
Knob Setting.
1.
Turn knob counter-
OR SPITTING
Thermostat clockwise for lower
AROUND
setting. If temperature
FUNNEL
of water does not
decrease, replace control
thermostat.
2.
Excessive Lime. 2.Tank and tank lid 2.
If lime build up is
assembly.
excessive, delime tank
and tank lid assembly.
DRIPPING
1.
Not Siphoning
1.
Water should flow from
1.
(A)
Brewer must be
properly.
sprayhead for approx-
level or slightly
imately 20 seconds
lower in front to
after timer shuts off.
siphon properly.
(B) Clean sprayhead
holes.
(C)
Insert deliming
spring in water tube
and air tube all the
way into tank and saw
back and forth five
2.
Solenoid valve
or six times.
not seating
properly
2.Solenoid valve
2.
Be sure spring is in
asseg1bly.
place and any particles
are cleaned from valveseat. If vaIve seat
is worn or multilated,replace solenoid valve.
WATER KEEPS
RUNNING
(BREWER WON'T
SHUT OFF
ELECTRICALLY) .
1. Solenoid Valve
1. Refer to "Dripping"
section, step 2.
1. Refer to "Dripping"
section, step 2.
5