Troubleshooting - Bunn Single SH BrewWISE DBC Installation And Operating Manual

TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.
• Inspection, testing, and repair of electrical equipment should be performed only by qualified
service personnel.
• All electronic components have 120 - 240 volt ac and low voltage dc potential on their terminals.
Shorting of terminals or the application of external voltages may result in board failure.
• Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be per-
manent. If an intermittent condition is encountered, the cause will likely be a switch contact or
a loose connection at a terminal or crimp.
• Solenoid removal requires interrupting the water supply to the valve. Damage may result if sole-
noids are energized for more than ten minutes without a supply of water.
• The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened.
This will help avoid twists and kinks in the tubing.
• Make certain that all plumbing connections are sealed and electrical connections tight and iso-
lated.
• This brewer is heated at all times. Keep away from combustibles.
WARNING
• Exercise extreme caution when servicing electrical equipment.
• Disconnect the brewer from the power source when servicing, except when electrical tests
are specified.
• Follow recommended service procedures.
• Replace all protective shields or safety notices.
Screen Displayed
OVERFLOW CUP
FULL. EMPTY CUP
SERVER NOT
IN PLACE
Possible Cause
1. Overflow cup is full of water. This
could be caused by boiling; see chart
on page 29. Also could be Refill Sen-
sitivity adjustment; see page 30.
1. Soft Heat Server not correctly
positioned on base.
2. Not using a Soft Heat Server, and
the SERVER DETECT function is
activated (on).
Page 39
Troubleshooting Procedure
Empty cup. Correct cause and
retry.
Position the server so that the con-
nector pins on the server make con-
tact with connector on the brewer.
Disable the SERVER DETECT func-
tion.