Bunn SINGLE SHDBC - Resolving Operational Problems and Failures

Page 31
Equipment will not operate.
Brew cycle will not start.
Automatic refi ll will not operate
or display shows FILL TIME TOO
LONG
1. No power or incorrect voltage.
1. No water
2. ON/OFF switch
3. Brew switch
4. Brew Valve
5. Electronic Control Board
1. No water
2. Water strainer/fl ow control
(.750 GPM)
Measure the voltage at the terminal
block and confi rm that it matches
the voltage specifi ed on the brewer
data plate within +/- 10%.
Check plumbing and shut-off
valves
Test the ON/OFF switch. Refer to
the switch test procedures on page
25.
Test the BREW switch. Refer to the
switch test procedures on page
25.
Test the Brew valve. Refer to Test-
ing Individual Components on page
25.
Substitute a control board known to
be in good working order.
Check plumbing and shut-off
valves.
(A) Direction of fl ow arrow must be
pointing towards direction of water
fl ow.
(B) Remove the strainer/fl ow control
and check for obstructions. Clear or
replace.
TROUBLESHOOTING (cont.)
Troubleshooting Procedure
Problem
Possible Cause
29877.1 07020334025.1 082404