Bunn SILVER SERIES JDF-4S User Manual

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TROUBLESHOOTING (cont.)
Dispense station
concentrate only
Dispense station
water only
Replace solenoid (24vdc) or check 
wire  connection  between  water 
valve and main control board.
Replace refill concentrate container 
or BIB
Check for proper counterclockwise 
rotation of pump rollers. If coun-
terclockwise, replace pump tubing. 
If  clockwise,  wire  connection  to 
pump is reversed. Switch wires on 
terminals.
A) Check speed setting on circuit 
board  and  increase  speed  (turn 
clockwise)
B) Check for d.c. power to pump 
motor. If yes, replace motor assy. If 
no, check harness for proper con-
tinuity. Then replace circuit board 
if needed.
Water solenoid
Concentrate out
Product pump not pumping
Pump not turning
PROBLEM
PROBABLE CAUSE
REMEDY
39992 042007