Grindmaster CRATHCO HC-2 - Manual (Page 9)

Crathco ® Whipped Hot Chocolate Dispensers Page 6
Troubleshooting Guide
The following procedures must be performed by a qualified service technician.
Problem/Possible Cause Service Check Remedy
Consistent filling of water tank
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Water not heating up
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Nothing dispensed - water or
chocolate - No whipper action
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No water dispensed or whipper
action - Only chocolate is dispensed
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No water dispensed - Whipper
works and chocolate is dispensed
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No whipper action - only water
and chocolate are dispensed
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No chocolate dispensed - Whipper
works and some water is
dispensed
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Constant dispense - chocolate,
water and whipper action
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Constant water dispense or drip
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Leaking fill solenoid valve
Electrode lined up or faulty
Faulty white common
connection to ground
Liquid level control faulty
Thermostat Off
Thermostat faulty
Power relay faulty
Heating element faulty
Dispense switch faulty
Water switch faulty
Tank refill problem
Kinked silicone tubing
Dispense valve faulty
Whipper motor faulty
No syrup to pump
Kinked pump tubing
Syrup pump faulty
Dispense switch faulty
Dispense valve faulty
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Removing power to machine does not
stop tank fill
Jumper from C to high on probe side of
board shuts fill off
Jumper from COM on probe side of
board to ground stops fill
Jumper from High to COM on probe
side of liquid level does not shut fill Off
Visual
Thermostat contacts do not close with
sleeve clockwise and inner screw
counter clockwise
No voltage to heating element - 120V.
across coil of relay does not pull in
120V across heating element but no
heat-element reads open with ohmeter
Switch reads open with ohmeter when
switch is pushed
Switch reads open with ohmeter when
switch is in On position
Check auto refill system
Check tubing run to mixer assembly
120V across input terminals on valve-
no actuation
120V across motor leads but motor
does not run
Check syrup container
Check tubing runs
120V across pump motor leads, pump
does not run; check for jammed rollers
Switch reads closed with ohmeter with
switch in the Off position
Dispense or drip continues with
power Off
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Clean-replace fill valve
Clean electrode rods. Check
rods & wiring; replace if
necessary
Tighten, clean, replace COM
connection to ground
Replace liquid level control
Turn thermostat sleeve clockwise
Replace thermostat
Replace power relay
Replace heating element
Replace switch
Replace switch
Clean-replace components
Reroute tubing-unkink
Replace coil or entire valve
Replace whipper motor
Replenish syrup supply
Unkink, reroute, replace
Replace syrup pump-Unjam
rollers
Replace switch
Clean, rebuild; replace
dispense valve