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Problem
TWO OR MORE PUMPS
OPERATE WHEN ONLY
ONE BUTTON IS PUSHED.
(Cont.)
WITH POWER PRESENT
DISPENSER WILL NOT
COOL
Drink temperature should be
35-45 F
2-7 C
WITH POWER PRESENT
COMPRESSOR WILL NOT
RUN.
(Compressor shell is cold to
touch.)
COMPRESSOR RUNS BUT
NO COOLING IS TAKING
PLACE.
Troubleshooting Guide
Probable Cause
VRB Board mounting screw
insulator is missing or
improperly installed.
Refrigeration shut off switch
is in the off position.
Depleted ice bank (not
applicable after period of
heavy usage.)
Loose or broken wire
connections.
Defective compressor start
component.
Ice bank control not connected
or defective.
Low refrigerant charge.
Refrigerant restriction.
15
Remedy
Check the corresponding VRB board
to the valve that is dispensing in
error. Where the screw mounts the
transistor to the bracket, be sure that
the spacer bushing is present and the
screw is not over tightened. Screw
contact with the bracket will cause a
short and the firing of the valve when
other valves are energized.
Refrigeration shut off switch is
located on the top of the dispenser.
This switch will disable the
compressor and condenser fan motor.
Be sure the switch is in the on
position.
Remove rear bonnet covering the
refrigeration deck. CAUTION should
be observed when working in this
area as the dispenser is energized and
operational. Check to see if the
compressor is running . If so allow
the system to recover (approximately
1 hour).
Check the wire connections at the
compressor. Be sure they are tightly
secured.
Check the compressor start relay.
Replace as required.
Check the ice bank control
connections. To test, place jumper
between the 2 leads. If the
compressor starts ,the ice bank
control is defective.
Contact a refrigeration service
technician. They will check for leaks
(sign of oil at joints and fitting) and
will recharge if necessary.
Refrigeration technician will examine
the system for, kinks in lines,
restrictions, etc. Heat exchanger may
need to be replaced.
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