Grindmaster LIQUID COFFEE DISPENSER LCD-2A - Manual (Page 17)

Page 17 Model LCD-2R and LCD-2A
Troubleshooting Guide (cont.)
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WARNING:
Risk of electrical shock. Disconnect power before removal of any machine access panels.
Problem/Cause Remedy
MACHINE DOES NOT POWER UP
Machine is unplugged Ensure machine is plugged into power supply
Power switch in OFF position Flip power switch to “ON” position (located at lower right corner
of back of machine); Blue LCD on door should be illuminated
when ON.
Branch circuit breaker has tripped Reset circuit breaker at service supply panel
Power supply external fuse is blown Check and replace fuse if necessary (located behind lower right
side chassis access panel).
NO HOT WATER FROM DISPENSE HEAD
Faulty water tank heater Check heating element resistance; replace if necessary.
Water Fill circuit “watch dog timer” has tripped Turn power switch “OFF” for 5 seconds, then “ON” (located at
lower right corner of back of machine)
Water supply to machine is turned OFF
Check for flashing diagnostic lights on control board See diagram of control for explanation of lights.
Level probe sensitivity is too high
Water is disabled in programming Check “Engineer” programming to ensure water is enabled.
NO CONCENTRATE IS DISPENSED
Bag-in-Box is empty or disconnected Ensure Bag-in-Box is not empty; replace with new Bag-in-Box if
empty.
Bag-in-Box connector is pointing up. (This position can create a
partial vacuum in the concentrate tube which may prevent
product from being pumped to the dispense spout.) Position Bag-in-Box connector pointing down to provide a
positive pressure in the concentrate tube.
Concentrate pickup tube is kinked Inspect tubing routing and ensure concentrate tubing is not
kinked.
Concentrate pump tubing, product out switch, or Bag-in-Box
fitting is clogged. Periodically clean and sanitize tubing per the cleaning and
sanitizing procedure in the instruction manual.
“Coffee” is disabled in programming. Check “Engineer” programming to ensure “Coffee” is enabled.
WATER TANK OVERFLOWS THROUGH TANK VENT AT BOTTOM OF MACHINE
Weeping fill valve seat Call for service.
WATER TANK OVERFLOWS THROUGH TANK VENT AT BOTTOM OF MACHINE
Note: A secondary float switch located in the water tank is intended to indicate an overflow condition at the LCD display.
Weeping water inlet valve Check water inlet valve; replace if necessary. (Note: a slow
overflow indicated this condition.)