Bunn G9-2 HD-S - Manual (Page 8)

8
TROUBLESHOOTING (cont.)
Problem
Grinder will not start.
Grinder will not shut off.
Remedy
(A) Plug-in the grinder.
(B) Check the voltage at the wall
outlet with a voltmeter. It must
be 120 volts ac for 120V models and
230 volts ac for 230V models.
(A) Momentarily press the Off/On/
Start switch to the “START” (lower)
position.
(B) Refer to Service - Off/On/Start
switch for testing procedures. See
page 11.
Refer to Service - Timer for testing
procedures. See page 17.
Refer to Service - Relay for testing
procedures. See page 14.
Remove the cover plate located on
the right side of the housing. Press
the red “Reset” button. Listen care-
fully for a “click”. This resets the
motor protection circuit and indi-
cates that an overload may have
been encountered by the motor. (An
overload can occur when something
other than coffee is inserted into the
hopper for grinding.) Refer to
Ser-
vice Motor for disassembly proce-
dures. See page 12.
Refer to Service - Motor for testing
procedures. See page 12.
(A) Place the switch in the “OFF/
STOP” position.
(B) Refer to Service - Off/On/Start
Switch for testing procedures. See
page 11.
Refer to Service - Timer for testing
procedures. See page 17.
Refer to Service - Relay for testing
procedures. See page 14.
Probable Cause
1. No power or incorrect voltage
2. Off/On/Start switch
3. Timer
4. Relay
5. Motor overload protector
6. Motor
1. Off/On/Start switch
2. Timer
3. Relay
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