Bunn CEZF Coffeemaker User Manual


 
Page 12
Will not fill or refill
PROBABLE CAUSE REMEDYPROBLEM
1. Power off to brewer (all models)
2. Water shut off (all models)
3. Display flashing (CDBC) or ready
light flashing (CEZ)
4. ON/OFF Switch (all models)
5. Lime build up on Probe (all
models)
6. Refill Valve or Control Board
(all models)
Press warmer switches on control
panel to determine if power is ON.
Make sure water is ON.
Brewer has shut down due to
malfunction (See Diagnostic Chart
in manual, Page 19, or under top
lid of brewer).
Make sure ON/OFF Switch is "ON"
and indicator is lit.
Remove the Probe and check for
lime deposit on tip. Clean and
reinstall.
Disconnect the brewer from the
power source and remove wires
from refill valve coil. Check for
continuity across the terminals of
the solenoid coil. If continuity is
not present, replace the refill valve
(See page 30). If continuity is
present, the coil may be stuck
closed. Shut water off to brewer.
Set the ON/OFF switch to the "OFF"
position. Open the faucet and drain
water down in the tank until flow
stops or slows to a trickle. Attach
a voltmeter to the terminals of the
refill solenoid. Connect the brewer
to the power source. Press the
switch "ON". Within five seconds,
voltage should be present at the
solenoid terminals. If voltage is
not present, refer to the wiring
diagrams and check the wiring
harness.
TROUBLESHOOTING (cont.)
REFILL CIRCUIT
29079 042803