Bunn New Infusion Series Programming Manual page 31

TROUBLESHOOTING (cont.)
PROBLEM
Automatic refill will not operate
or display shows FILL TIME TOO
LONG
PROBABLE CAUSE
1. No water
2. Refill probe or Sensitivity set-
ting
3. Refill valve
Page 31
REMEDY
Remove the strainer and check for
obstructions. Clear or replace.
Check the sensitivity setting. Refer
to the REFILL function. If the left
three digit number is less than the
right number, the machine "thinks"
it is full and the refill valve should
be off. If the left number is larger
than the right, then the refill valve
will automatically be turned on to
fill the tank. The right number is
the threshold setting and can be
adjusted to compensate for ex-
treme water conditions: very pure,
low conductance water requires a
higher setting, while high mineral
content, high conductance water
requires a lower setting. Note that
the left number changes from a high
value when water is NOT touching
the refill probe to a low valve when
water IS touching the probe. For best
operation, the right number should
be set to a value midway between
these low and high numbers. Be-
fore changing the setting, confirm
that the refill probe is free of scale
buildup and the connection to it is
secure. Test the refill valve.
Refill valve – 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
53867 050117