Bunn CDBC Operating & Service Manual page 14

TROUBLESHOOTING (cont.)
HEATING CIRCUIT
PROBLEM
Water does not heat to proper
temperature
IMPORTANT: Make sure no tem-
perature tests are taken before the
ready light is "ON". Tank tempera-
ture must be stabilized before read-
ings are taken.
PROBABLE CAUSE
1. Display flashing
2. Water not touching tempera-
ture probe
3. Dry Plug In Probe Sensing Sys-
tem
Page 14
REMEDY
Brewer has shut down due to mal-
function (See Diagnostic Chart in
manual, Page 21, or under top lid).
Remove probe and grommet. Look
into hole on tank lid. Water must
be within one inch from top of
tank.
Disconnect the brewer from the
power source. Disconnect the J3
connector from the control board.
Check for continuity from the tank
mounting screw where the green
wire mounts, to pin 2 of the plug,
continuity should be present. Pull
the temperature probe up about
an inch from the grommet. Check
for continuity from the outside
surface of the temperature probe
and pin 4 of the plug, continuity
should be present. Connect the J3
plug to the control board and pro-
ceed to step 4.
35582 091503